Provides static methods for the creation, copying, deletion, moving, and opening of a single file, and aids in the creation of T:System.IO.FileStream objects.To browse the .NET Framework source code for this type, see the Reference Source. More...

Static Public Member Functions
static StreamReader	OpenText (string path)
	Opens an existing UTF-8 encoded text file for reading. More...

static StreamWriter	CreateText (string path)
	Creates or opens a file for writing UTF-8 encoded text. More...

static StreamWriter	AppendText (string path)
	Creates a T:System.IO.StreamWriter that appends UTF-8 encoded text to an existing file, or to a new file if the specified file does not exist. More...

static void	Copy (string sourceFileName, string destFileName)
	Copies an existing file to a new file. Overwriting a file of the same name is not allowed. More...

static void	Copy (string sourceFileName, string destFileName, bool overwrite)
	Copies an existing file to a new file. Overwriting a file of the same name is allowed. More...

static FileStream	Create (string path)
	Creates or overwrites a file in the specified path. More...

static FileStream	Create (string path, int bufferSize)
	Creates or overwrites the specified file. More...

static FileStream	Create (string path, int bufferSize, FileOptions options)
	Creates or overwrites the specified file, specifying a buffer size and a T:System.IO.FileOptions value that describes how to create or overwrite the file. More...

static FileStream	Create (string path, int bufferSize, FileOptions options, FileSecurity fileSecurity)
	Creates or overwrites the specified file with the specified buffer size, file options, and file security. More...

static void	Delete (string path)
	Deletes the specified file. More...

static void	Decrypt (string path)
	Decrypts a file that was encrypted by the current account using the M:System.IO.File.Encrypt(System.String) method. More...

static void	Encrypt (string path)
	Encrypts a file so that only the account used to encrypt the file can decrypt it. More...

static bool	Exists (string path)
	Determines whether the specified file exists. More...

static FileStream	Open (string path, FileMode mode)
	Opens a T:System.IO.FileStream on the specified path with read/write access. More...

static FileStream	Open (string path, FileMode mode, FileAccess access)
	Opens a T:System.IO.FileStream on the specified path, with the specified mode and access. More...

static FileStream	Open (string path, FileMode mode, FileAccess access, FileShare share)
	Opens a T:System.IO.FileStream on the specified path, having the specified mode with read, write, or read/write access and the specified sharing option. More...

static void	SetCreationTime (string path, DateTime creationTime)
	Sets the date and time the file was created. More...

static unsafe void	SetCreationTimeUtc (string path, DateTime creationTimeUtc)
	Sets the date and time, in coordinated universal time (UTC), that the file was created. More...

static DateTime	GetCreationTime (string path)
	Returns the creation date and time of the specified file or directory. More...

static DateTime	GetCreationTimeUtc (string path)
	Returns the creation date and time, in coordinated universal time (UTC), of the specified file or directory. More...

static void	SetLastAccessTime (string path, DateTime lastAccessTime)
	Sets the date and time the specified file was last accessed. More...

static unsafe void	SetLastAccessTimeUtc (string path, DateTime lastAccessTimeUtc)
	Sets the date and time, in coordinated universal time (UTC), that the specified file was last accessed. More...

static DateTime	GetLastAccessTime (string path)
	Returns the date and time the specified file or directory was last accessed. More...

static DateTime	GetLastAccessTimeUtc (string path)
	Returns the date and time, in coordinated universal time (UTC), that the specified file or directory was last accessed. More...

static void	SetLastWriteTime (string path, DateTime lastWriteTime)
	Sets the date and time that the specified file was last written to. More...

static unsafe void	SetLastWriteTimeUtc (string path, DateTime lastWriteTimeUtc)
	Sets the date and time, in coordinated universal time (UTC), that the specified file was last written to. More...

static DateTime	GetLastWriteTime (string path)
	Returns the date and time the specified file or directory was last written to. More...

static DateTime	GetLastWriteTimeUtc (string path)
	Returns the date and time, in coordinated universal time (UTC), that the specified file or directory was last written to. More...

static FileAttributes	GetAttributes (string path)
	Gets the T:System.IO.FileAttributes of the file on the path. More...

static void	SetAttributes (string path, FileAttributes fileAttributes)
	Sets the specified T:System.IO.FileAttributes of the file on the specified path. More...

static FileSecurity	GetAccessControl (string path)
	Gets a T:System.Security.AccessControl.FileSecurity object that encapsulates the access control list (ACL) entries for a specified file. More...

static FileSecurity	GetAccessControl (string path, AccessControlSections includeSections)
	Gets a T:System.Security.AccessControl.FileSecurity object that encapsulates the specified type of access control list (ACL) entries for a particular file. More...

static void	SetAccessControl (string path, FileSecurity fileSecurity)
	Applies access control list (ACL) entries described by a T:System.Security.AccessControl.FileSecurity object to the specified file. More...

static FileStream	OpenRead (string path)
	Opens an existing file for reading. More...

static FileStream	OpenWrite (string path)
	Opens an existing file or creates a new file for writing. More...

static string	ReadAllText (string path)
	Opens a text file, reads all lines of the file, and then closes the file. More...

static string	ReadAllText (string path, Encoding encoding)
	Opens a file, reads all lines of the file with the specified encoding, and then closes the file. More...

static void	WriteAllText (string path, string contents)
	Creates a new file, writes the specified string to the file, and then closes the file. If the target file already exists, it is overwritten. More...

static void	WriteAllText (string path, string contents, Encoding encoding)
	Creates a new file, writes the specified string to the file using the specified encoding, and then closes the file. If the target file already exists, it is overwritten. More...

static byte []	ReadAllBytes (string path)
	Opens a binary file, reads the contents of the file into a byte array, and then closes the file. More...

static void	WriteAllBytes (string path, byte[] bytes)
	Creates a new file, writes the specified byte array to the file, and then closes the file. If the target file already exists, it is overwritten. More...

static string []	ReadAllLines (string path)
	Opens a text file, reads all lines of the file, and then closes the file. More...

static string []	ReadAllLines (string path, Encoding encoding)
	Opens a file, reads all lines of the file with the specified encoding, and then closes the file. More...

static IEnumerable< string >	ReadLines (string path)
	Reads the lines of a file. More...

static IEnumerable< string >	ReadLines (string path, Encoding encoding)
	Read the lines of a file that has a specified encoding. More...

static void	WriteAllLines (string path, string[] contents)
	Creates a new file, write the specified string array to the file, and then closes the file. More...

static void	WriteAllLines (string path, string[] contents, Encoding encoding)
	Creates a new file, writes the specified string array to the file by using the specified encoding, and then closes the file. More...

static void	WriteAllLines (string path, IEnumerable< string > contents)
	Creates a new file, writes a collection of strings to the file, and then closes the file. More...

static void	WriteAllLines (string path, IEnumerable< string > contents, Encoding encoding)
	Creates a new file by using the specified encoding, writes a collection of strings to the file, and then closes the file. More...

static void	AppendAllText (string path, string contents)
	Opens a file, appends the specified string to the file, and then closes the file. If the file does not exist, this method creates a file, writes the specified string to the file, then closes the file. More...

static void	AppendAllText (string path, string contents, Encoding encoding)
	Appends the specified string to the file, creating the file if it does not already exist. More...

static void	AppendAllLines (string path, IEnumerable< string > contents)
	Appends lines to a file, and then closes the file. If the specified file does not exist, this method creates a file, writes the specified lines to the file, and then closes the file. More...

static void	AppendAllLines (string path, IEnumerable< string > contents, Encoding encoding)
	Appends lines to a file by using a specified encoding, and then closes the file. If the specified file does not exist, this method creates a file, writes the specified lines to the file, and then closes the file. More...

static void	Move (string sourceFileName, string destFileName)
	Moves a specified file to a new location, providing the option to specify a new file name. More...

static void	Replace (string sourceFileName, string destinationFileName, string destinationBackupFileName)
	Replaces the contents of a specified file with the contents of another file, deleting the original file, and creating a backup of the replaced file. More...

static void	Replace (string sourceFileName, string destinationFileName, string destinationBackupFileName, bool ignoreMetadataErrors)
	Replaces the contents of a specified file with the contents of another file, deleting the original file, and creating a backup of the replaced file and optionally ignores merge errors. More...

Detailed Description

Provides static methods for the creation, copying, deletion, moving, and opening of a single file, and aids in the creation of T:System.IO.FileStream objects.To browse the .NET Framework source code for this type, see the Reference Source.

Definition at line 14 of file File.cs.

Member Function Documentation

◆ AppendAllLines() [1/2]

static void System.IO.File.AppendAllLines	(	string	path,
		IEnumerable< string >	contents
	)

static

Appends lines to a file, and then closes the file. If the specified file does not exist, this method creates a file, writes the specified lines to the file, and then closes the file.

Parameters

path	The file to append the lines to. The file is created if it doesn't already exist.
contents	The lines to append to the file.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one more invalid characters defined by the M:System.IO.Path.GetInvalidPathChars method.
T:System.ArgumentNullException	Either path or contents is `null`.
T:System.IO.DirectoryNotFoundException	path is invalid (for example, the directory doesn’t exist or it is on an unmapped drive).
T:System.IO.FileNotFoundException	The file specified by path was not found.
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.IO.PathTooLongException	path exceeds the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters and file names must be less than 260 characters.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have permission to write to the file.
T:System.UnauthorizedAccessException	path specifies a file that is read-only.-or-This operation is not supported on the current platform.-or- path is a directory.

Definition at line 1688 of file File.cs.

◆ AppendAllLines() [2/2]

static void System.IO.File.AppendAllLines	(	string	path,
		IEnumerable< string >	contents,
		Encoding	encoding
	)

static

Appends lines to a file by using a specified encoding, and then closes the file. If the specified file does not exist, this method creates a file, writes the specified lines to the file, and then closes the file.

Parameters

path	The file to append the lines to. The file is created if it doesn't already exist.
contents	The lines to append to the file.
encoding	The character encoding to use.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one more invalid characters defined by the M:System.IO.Path.GetInvalidPathChars method.
T:System.ArgumentNullException	Either path , contents , or encoding is `null`.
T:System.IO.DirectoryNotFoundException	path is invalid (for example, the directory doesn’t exist or it is on an unmapped drive).
T:System.IO.FileNotFoundException	The file specified by path was not found.
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.IO.PathTooLongException	path exceeds the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters and file names must be less than 260 characters.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have the required permission.
T:System.UnauthorizedAccessException	path specifies a file that is read-only.-or-This operation is not supported on the current platform.-or- path is a directory.-or-The caller does not have the required permission.

Definition at line 1724 of file File.cs.

◆ AppendAllText() [1/2]

static void System.IO.File.AppendAllText	(	string	path,
		string	contents
	)

static

Opens a file, appends the specified string to the file, and then closes the file. If the file does not exist, this method creates a file, writes the specified string to the file, then closes the file.

Parameters

path	The file to append the specified string to.
contents	The string to append to the file.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, the directory doesn’t exist or it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.UnauthorizedAccessException	path specified a file that is read-only.-or- This operation is not supported on the current platform.-or- path specified a directory.-or- The caller does not have the required permission.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have the required permission.

Definition at line 1615 of file File.cs.

◆ AppendAllText() [2/2]

static void System.IO.File.AppendAllText	(	string	path,
		string	contents,
		Encoding	encoding
	)

static

Appends the specified string to the file, creating the file if it does not already exist.

Parameters

path	The file to append the specified string to.
contents	The string to append to the file.
encoding	The character encoding to use.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, the directory doesn’t exist or it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.UnauthorizedAccessException	path specified a file that is read-only.-or- This operation is not supported on the current platform.-or- path specified a directory.-or- The caller does not have the required permission.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have the required permission.

Definition at line 1645 of file File.cs.

◆ AppendText()

static StreamWriter System.IO.File.AppendText ( string path )

static

Creates a T:System.IO.StreamWriter that appends UTF-8 encoded text to an existing file, or to a new file if the specified file does not exist.

Parameters

path	The path to the file to append to.

Returns: A stream writer that appends UTF-8 encoded text to the specified file or to a new file.

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, the directory doesn’t exist or it is on an unmapped drive).
T:System.NotSupportedException	path is in an invalid format.

Definition at line 77 of file File.cs.

◆ Copy() [1/2]

static void System.IO.File.Copy	(	string	sourceFileName,
		string	destFileName
	)

static

Copies an existing file to a new file. Overwriting a file of the same name is not allowed.

Parameters

sourceFileName	The file to copy.
destFileName	The name of the destination file. This cannot be a directory or an existing file.

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.ArgumentException	sourceFileName or destFileName is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.-or- sourceFileName or destFileName specifies a directory.
T:System.ArgumentNullException	sourceFileName or destFileName is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The path specified in sourceFileName or destFileName is invalid (for example, it is on an unmapped drive).
T:System.IO.FileNotFoundException	sourceFileName was not found.
T:System.IO.IOException	destFileName exists.-or- An I/O error has occurred.
T:System.NotSupportedException	sourceFileName or destFileName is in an invalid format.

Definition at line 103 of file File.cs.

◆ Copy() [2/2]

static void System.IO.File.Copy	(	string	sourceFileName,
		string	destFileName,
		bool	overwrite
	)

static

Copies an existing file to a new file. Overwriting a file of the same name is allowed.

Parameters

sourceFileName	The file to copy.
destFileName	The name of the destination file. This cannot be a directory.
overwrite	`true` if the destination file can be overwritten; otherwise, `false`.

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission. -or- destFileName is read-only.
T:System.ArgumentException	sourceFileName or destFileName is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.-or- sourceFileName or destFileName specifies a directory.
T:System.ArgumentNullException	sourceFileName or destFileName is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The path specified in sourceFileName or destFileName is invalid (for example, it is on an unmapped drive).
T:System.IO.FileNotFoundException	sourceFileName was not found.
T:System.IO.IOException	destFileName exists and overwrite is `false`.-or- An I/O error has occurred.
T:System.NotSupportedException	sourceFileName or destFileName is in an invalid format.

Definition at line 144 of file File.cs.

◆ Create() [1/4]

static FileStream System.IO.File.Create ( string path )

static

Creates or overwrites a file in the specified path.

Parameters

path	The path and name of the file to create.

Returns: A T:System.IO.FileStream that provides read/write access to the file specified in path .

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission.-or- path specified a file that is read-only.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while creating the file.
T:System.NotSupportedException	path is in an invalid format.

Definition at line 231 of file File.cs.

◆ Create() [2/4]

static FileStream System.IO.File.Create	(	string	path,
		int	bufferSize
	)

static

Creates or overwrites the specified file.

Parameters

path	The name of the file.
bufferSize	The number of bytes buffered for reads and writes to the file.

Returns: A T:System.IO.FileStream with the specified buffer size that provides read/write access to the file specified in path .

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission.-or- path specified a file that is read-only.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while creating the file.
T:System.NotSupportedException	path is in an invalid format.

Definition at line 251 of file File.cs.

◆ Create() [3/4]

static FileStream System.IO.File.Create	(	string	path,
		int	bufferSize,
		FileOptions	options
	)

static

Creates or overwrites the specified file, specifying a buffer size and a T:System.IO.FileOptions value that describes how to create or overwrite the file.

Parameters

path	The name of the file.
bufferSize	The number of bytes buffered for reads and writes to the file.
options	One of the T:System.IO.FileOptions values that describes how to create or overwrite the file.

Returns: A new file with the specified buffer size.

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission.-or- path specified a file that is read-only. -or- F:System.IO.FileOptions.Encrypted is specified for options and file encryption is not supported on the current platform.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive.
T:System.IO.IOException	An I/O error occurred while creating the file.
T:System.NotSupportedException	path is in an invalid format.
T:System.UnauthorizedAccessException	The caller does not have the required permission.-or- path specified a file that is read-only.
T:System.UnauthorizedAccessException	The caller does not have the required permission.-or- path specified a file that is read-only.

Definition at line 277 of file File.cs.

◆ Create() [4/4]

static FileStream System.IO.File.Create	(	string	path,
		int	bufferSize,
		FileOptions	options,
		FileSecurity	fileSecurity
	)

static

Creates or overwrites the specified file with the specified buffer size, file options, and file security.

Parameters

path	The name of the file.
bufferSize	The number of bytes buffered for reads and writes to the file.
options	One of the T:System.IO.FileOptions values that describes how to create or overwrite the file.
fileSecurity	One of the T:System.Security.AccessControl.FileSecurity values that determines the access control and audit security for the file.

Returns: A new file with the specified buffer size, file options, and file security.

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission.-or- path specified a file that is read-only.-or- F:System.IO.FileOptions.Encrypted is specified for options and file encryption is not supported on the current platform.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while creating the file.
T:System.NotSupportedException	path is in an invalid format.
T:System.UnauthorizedAccessException	The caller does not have the required permission.-or- path specified a file that is read-only.
T:System.UnauthorizedAccessException	The caller does not have the required permission.-or- path specified a file that is read-only.

Definition at line 304 of file File.cs.

◆ CreateText()

static StreamWriter System.IO.File.CreateText ( string path )

static

Creates or opens a file for writing UTF-8 encoded text.

Parameters

path	The file to be opened for writing.

Returns: A T:System.IO.StreamWriter that writes to the specified file using UTF-8 encoding.

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive).
T:System.NotSupportedException	path is in an invalid format.

Definition at line 56 of file File.cs.

◆ Decrypt()

static void System.IO.File.Decrypt ( string path )

static

Decrypts a file that was encrypted by the current account using the M:System.IO.File.Encrypt(System.String) method.

Parameters

path	A path that describes a file to decrypt.

Exceptions

T:System.ArgumentException	The path parameter is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	The path parameter is `null`.
T:System.IO.DriveNotFoundException	An invalid drive was specified.
T:System.IO.FileNotFoundException	The file described by the path parameter could not be found.
T:System.IO.IOException	An I/O error occurred while opening the file. For example, the encrypted file is already open. -or-This operation is not supported on the current platform.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.PlatformNotSupportedException	The current operating system is not Windows NT or later.
T:System.NotSupportedException	The file system is not NTFS.
T:System.UnauthorizedAccessException	The path parameter specified a file that is read-only.-or- This operation is not supported on the current platform.-or- The path parameter specified a directory.-or- The caller does not have the required permission.

Definition at line 370 of file File.cs.

◆ Delete()

static void System.IO.File.Delete ( string path )

static

Deletes the specified file.

Parameters

path	The name of the file to be deleted. Wildcard characters are not supported.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	The specified file is in use. -or-There is an open handle on the file, and the operating system is Windows XP or earlier. This open handle can result from enumerating directories and files. For more information, see How to: Enumerate Directories and Files.
T:System.NotSupportedException	path is in an invalid format.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.UnauthorizedAccessException	The caller does not have the required permission.-or- The file is an executable file that is in use.-or- path is a directory.-or- path specified a read-only file.

Definition at line 324 of file File.cs.

◆ Encrypt()

static void System.IO.File.Encrypt ( string path )

static

Encrypts a file so that only the account used to encrypt the file can decrypt it.

Parameters

path	A path that describes a file to encrypt.

Exceptions

T:System.ArgumentException	The path parameter is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	The path parameter is `null`.
T:System.IO.DriveNotFoundException	An invalid drive was specified.
T:System.IO.FileNotFoundException	The file described by the path parameter could not be found.
T:System.IO.IOException	An I/O error occurred while opening the file.-or-This operation is not supported on the current platform.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.PlatformNotSupportedException	The current operating system is not Windows NT or later.
T:System.NotSupportedException	The file system is not NTFS.
T:System.UnauthorizedAccessException	The path parameter specified a file that is read-only.-or- This operation is not supported on the current platform.-or- The path parameter specified a directory.-or- The caller does not have the required permission.

Definition at line 406 of file File.cs.

◆ Exists()

static bool System.IO.File.Exists ( string path )

static

Determines whether the specified file exists.

Parameters

path	The file to check.

Returns: true if the caller has the required permissions and path contains the name of an existing file; otherwise, false. This method also returns false if path is null, an invalid path, or a zero-length string. If the caller does not have sufficient permissions to read the specified file, no exception is thrown and the method returns false regardless of the existence of path .

Definition at line 435 of file File.cs.

◆ GetAccessControl() [1/2]

static FileSecurity System.IO.File.GetAccessControl ( string path )

static

Gets a T:System.Security.AccessControl.FileSecurity object that encapsulates the access control list (ACL) entries for a specified file.

Parameters

path	The path to a file containing a T:System.Security.AccessControl.FileSecurity object that describes the file's access control list (ACL) information.

Returns: A T:System.Security.AccessControl.FileSecurity object that encapsulates the access control rules for the file described by the path parameter.

Exceptions

T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.Runtime.InteropServices.SEHException	The path parameter is `null`.
T:System.SystemException	The file could not be found.
T:System.UnauthorizedAccessException	The path parameter specified a file that is read-only.-or- This operation is not supported on the current platform.-or- The path parameter specified a directory.-or- The caller does not have the required permission.

Definition at line 933 of file File.cs.

◆ GetAccessControl() [2/2]

static FileSecurity System.IO.File.GetAccessControl	(	string	path,
		AccessControlSections	includeSections
	)

static

Gets a T:System.Security.AccessControl.FileSecurity object that encapsulates the specified type of access control list (ACL) entries for a particular file.

Parameters

path	The path to a file containing a T:System.Security.AccessControl.FileSecurity object that describes the file's access control list (ACL) information.
includeSections	One of the T:System.Security.AccessControl.AccessControlSections values that specifies the type of access control list (ACL) information to receive.

Returns: A T:System.Security.AccessControl.FileSecurity object that encapsulates the access control rules for the file described by the path parameter.

Exceptions

T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.Runtime.InteropServices.SEHException	The path parameter is `null`.
T:System.SystemException	The file could not be found.
T:System.UnauthorizedAccessException	The path parameter specified a file that is read-only.-or- This operation is not supported on the current platform.-or- The path parameter specified a directory.-or- The caller does not have the required permission.

Definition at line 946 of file File.cs.

◆ GetAttributes()

static FileAttributes System.IO.File.GetAttributes ( string path )

static

Gets the T:System.IO.FileAttributes of the file on the path.

Parameters

path	The path to the file.

Returns: The T:System.IO.FileAttributes of the file on the path.

Exceptions

T:System.ArgumentException	path is empty, contains only white spaces, or contains invalid characters.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.NotSupportedException	path is in an invalid format.
T:System.IO.FileNotFoundException	path represents a file and is invalid, such as being on an unmapped drive, or the file cannot be found.
T:System.IO.DirectoryNotFoundException	path represents a directory and is invalid, such as being on an unmapped drive, or the directory cannot be found.
T:System.IO.IOException	This file is being used by another process.
T:System.UnauthorizedAccessException	The caller does not have the required permission.

Definition at line 884 of file File.cs.

◆ GetCreationTime()

static DateTime System.IO.File.GetCreationTime ( string path )

static

Returns the creation date and time of the specified file or directory.

Parameters

path	The file or directory for which to obtain creation date and time information.

Returns: A T:System.DateTime structure set to the creation date and time for the specified file or directory. This value is expressed in local time.

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.NotSupportedException	path is in an invalid format.

Definition at line 638 of file File.cs.

◆ GetCreationTimeUtc()

static DateTime System.IO.File.GetCreationTimeUtc ( string path )

static

Returns the creation date and time, in coordinated universal time (UTC), of the specified file or directory.

Parameters

path	The file or directory for which to obtain creation date and time information.

Returns: A T:System.DateTime structure set to the creation date and time for the specified file or directory. This value is expressed in UTC time.

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.NotSupportedException	path is in an invalid format.

Definition at line 655 of file File.cs.

◆ GetLastAccessTime()

static DateTime System.IO.File.GetLastAccessTime ( string path )

static

Returns the date and time the specified file or directory was last accessed.

Parameters

path	The file or directory for which to obtain access date and time information.

Returns: A T:System.DateTime structure set to the date and time that the specified file or directory was last accessed. This value is expressed in local time.

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.NotSupportedException	path is in an invalid format.

Definition at line 735 of file File.cs.

◆ GetLastAccessTimeUtc()

static DateTime System.IO.File.GetLastAccessTimeUtc ( string path )

static

Returns the date and time, in coordinated universal time (UTC), that the specified file or directory was last accessed.

Parameters

path	The file or directory for which to obtain access date and time information.

Returns: A T:System.DateTime structure set to the date and time that the specified file or directory was last accessed. This value is expressed in UTC time.

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.NotSupportedException	path is in an invalid format.

Definition at line 752 of file File.cs.

◆ GetLastWriteTime()

static DateTime System.IO.File.GetLastWriteTime ( string path )

static

Returns the date and time the specified file or directory was last written to.

Parameters

path	The file or directory for which to obtain write date and time information.

Returns: A T:System.DateTime structure set to the date and time that the specified file or directory was last written to. This value is expressed in local time.

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.NotSupportedException	path is in an invalid format.

Definition at line 832 of file File.cs.

◆ GetLastWriteTimeUtc()

static DateTime System.IO.File.GetLastWriteTimeUtc ( string path )

static

Returns the date and time, in coordinated universal time (UTC), that the specified file or directory was last written to.

Parameters

path	The file or directory for which to obtain write date and time information.

Returns: A T:System.DateTime structure set to the date and time that the specified file or directory was last written to. This value is expressed in UTC time.

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.NotSupportedException	path is in an invalid format.

Definition at line 849 of file File.cs.

◆ Move()

static void System.IO.File.Move	(	string	sourceFileName,
		string	destFileName
	)

static

Moves a specified file to a new location, providing the option to specify a new file name.

Parameters

sourceFileName	The name of the file to move. Can include a relative or absolute path.
destFileName	The new path and name for the file.

Exceptions

T:System.IO.IOException	The destination file already exists.-or- sourceFileName was not found.
T:System.ArgumentNullException	sourceFileName or destFileName is `null`.
T:System.ArgumentException	sourceFileName or destFileName is a zero-length string, contains only white space, or contains invalid characters as defined in F:System.IO.Path.InvalidPathChars.
T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The path specified in sourceFileName or destFileName is invalid, (for example, it is on an unmapped drive).
T:System.NotSupportedException	sourceFileName or destFileName is in an invalid format.

Definition at line 1760 of file File.cs.

◆ Open() [1/3]

static FileStream System.IO.File.Open	(	string	path,
		FileMode	mode
	)

static

Opens a T:System.IO.FileStream on the specified path with read/write access.

Parameters

path	The file to open.
mode	A T:System.IO.FileMode value that specifies whether a file is created if one does not exist, and determines whether the contents of existing files are retained or overwritten.

Returns: A T:System.IO.FileStream opened in the specified mode and path, with read/write access and not shared.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid, (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.UnauthorizedAccessException	path specified a file that is read-only.-or- This operation is not supported on the current platform.-or- path specified a directory.-or- The caller does not have the required permission. -or- mode is F:System.IO.FileMode.Create and the specified file is a hidden file.
T:System.ArgumentOutOfRangeException	mode specified an invalid value.
T:System.IO.FileNotFoundException	The file specified in path was not found.
T:System.NotSupportedException	path is in an invalid format.

Definition at line 516 of file File.cs.

◆ Open() [2/3]

static FileStream System.IO.File.Open	(	string	path,
		FileMode	mode,
		FileAccess	access
	)

static

Opens a T:System.IO.FileStream on the specified path, with the specified mode and access.

Parameters

path	The file to open.
mode	A T:System.IO.FileMode value that specifies whether a file is created if one does not exist, and determines whether the contents of existing files are retained or overwritten.
access	A T:System.IO.FileAccess value that specifies the operations that can be performed on the file.

Returns: An unshared T:System.IO.FileStream that provides access to the specified file, with the specified mode and access.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.-or- access specified `Read` and mode specified `Create`, `CreateNew`, `Truncate`, or `Append`.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid, (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.UnauthorizedAccessException	path specified a file that is read-only and access is not `Read`.-or- path specified a directory.-or- The caller does not have the required permission. -or- mode is F:System.IO.FileMode.Create and the specified file is a hidden file.
T:System.ArgumentOutOfRangeException	mode or access specified an invalid value.
T:System.IO.FileNotFoundException	The file specified in path was not found.
T:System.NotSupportedException	path is in an invalid format.

Definition at line 543 of file File.cs.

◆ Open() [3/3]

static FileStream System.IO.File.Open	(	string	path,
		FileMode	mode,
		FileAccess	access,
		FileShare	share
	)

static

Opens a T:System.IO.FileStream on the specified path, having the specified mode with read, write, or read/write access and the specified sharing option.

Parameters

path	The file to open.
mode	A T:System.IO.FileMode value that specifies whether a file is created if one does not exist, and determines whether the contents of existing files are retained or overwritten.
access	A T:System.IO.FileAccess value that specifies the operations that can be performed on the file.
share	A T:System.IO.FileShare value specifying the type of access other threads have to the file.

Returns: A T:System.IO.FileStream on the specified path, having the specified mode with read, write, or read/write access and the specified sharing option.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.-or- access specified `Read` and mode specified `Create`, `CreateNew`, `Truncate`, or `Append`.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid, (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.UnauthorizedAccessException	path specified a file that is read-only and access is not `Read`.-or- path specified a directory.-or- The caller does not have the required permission. -or- mode is F:System.IO.FileMode.Create and the specified file is a hidden file.
T:System.ArgumentOutOfRangeException	mode , access , or share specified an invalid value.
T:System.IO.FileNotFoundException	The file specified in path was not found.
T:System.NotSupportedException	path is in an invalid format.

Definition at line 571 of file File.cs.

◆ OpenRead()

static FileStream System.IO.File.OpenRead ( string path )

static

Opens an existing file for reading.

Parameters

path	The file to be opened for reading.

Returns: A read-only T:System.IO.FileStream on the specified path.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid, (for example, it is on an unmapped drive).
T:System.UnauthorizedAccessException	path specified a directory.-or- The caller does not have the required permission.
T:System.IO.FileNotFoundException	The file specified in path was not found.
T:System.NotSupportedException	path is in an invalid format.
T:System.IO.IOException	An I/O error occurred while opening the file.

Definition at line 985 of file File.cs.

◆ OpenText()

static StreamReader System.IO.File.OpenText ( string path )

static

Opens an existing UTF-8 encoded text file for reading.

Parameters

path	The file to be opened for reading.

Returns: A T:System.IO.StreamReader on the specified path.

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid, (for example, it is on an unmapped drive).
T:System.IO.FileNotFoundException	The file specified in path was not found.
T:System.NotSupportedException	path is in an invalid format.

Definition at line 35 of file File.cs.

◆ OpenWrite()

static FileStream System.IO.File.OpenWrite ( string path )

static

Opens an existing file or creates a new file for writing.

Parameters

path	The file to be opened for writing.

Returns: An unshared T:System.IO.FileStream object on the specified path with F:System.IO.FileAccess.Write access.

Exceptions

T:System.UnauthorizedAccessException	The caller does not have the required permission.-or- path specified a read-only file or directory.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid, (for example, it is on an unmapped drive).
T:System.NotSupportedException	path is in an invalid format.

Definition at line 1003 of file File.cs.

◆ ReadAllBytes()

static byte [] System.IO.File.ReadAllBytes ( string path )

static

Opens a binary file, reads the contents of the file into a byte array, and then closes the file.

Parameters

path	The file to open for reading.

Returns: A byte array containing the contents of the file.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.UnauthorizedAccessException	This operation is not supported on the current platform.-or- path specified a directory.-or- The caller does not have the required permission.
T:System.IO.FileNotFoundException	The file specified in path was not found.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have the required permission.

Definition at line 1203 of file File.cs.

◆ ReadAllLines() [1/2]

static string [] System.IO.File.ReadAllLines ( string path )

static

Opens a text file, reads all lines of the file, and then closes the file.

Parameters

path	The file to open for reading.

Returns: A string array containing all lines of the file.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.UnauthorizedAccessException	path specified a file that is read-only.-or- This operation is not supported on the current platform.-or- path specified a directory.-or- The caller does not have the required permission.
T:System.IO.FileNotFoundException	The file specified in path was not found.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have the required permission.

Definition at line 1319 of file File.cs.

◆ ReadAllLines() [2/2]

static string [] System.IO.File.ReadAllLines	(	string	path,
		Encoding	encoding
	)

static

Opens a file, reads all lines of the file with the specified encoding, and then closes the file.

Parameters

path	The file to open for reading.
encoding	The encoding applied to the contents of the file.

Returns: A string array containing all lines of the file.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.UnauthorizedAccessException	path specified a file that is read-only.-or- This operation is not supported on the current platform.-or- path specified a directory.-or- The caller does not have the required permission.
T:System.IO.FileNotFoundException	The file specified in path was not found.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have the required permission.

Definition at line 1350 of file File.cs.

◆ ReadAllText() [1/2]

static string System.IO.File.ReadAllText ( string path )

static

Opens a text file, reads all lines of the file, and then closes the file.

Parameters

path	The file to open for reading.

Returns: A string containing all lines of the file.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.UnauthorizedAccessException	path specified a file that is read-only.-or- This operation is not supported on the current platform.-or- path specified a directory.-or- The caller does not have the required permission.
T:System.IO.FileNotFoundException	The file specified in path was not found.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have the required permission.

Definition at line 1026 of file File.cs.

◆ ReadAllText() [2/2]

static string System.IO.File.ReadAllText	(	string	path,
		Encoding	encoding
	)

static

Opens a file, reads all lines of the file with the specified encoding, and then closes the file.

Parameters

path	The file to open for reading.
encoding	The encoding applied to the contents of the file.

Returns: A string containing all lines of the file.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.UnauthorizedAccessException	path specified a file that is read-only.-or- This operation is not supported on the current platform.-or- path specified a directory.-or- The caller does not have the required permission.
T:System.IO.FileNotFoundException	The file specified in path was not found.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have the required permission.

Definition at line 1058 of file File.cs.

◆ ReadLines() [1/2]

static IEnumerable<string> System.IO.File.ReadLines ( string path )

static

Reads the lines of a file.

Parameters

path	The file to read.

Returns: All the lines of the file, or the lines that are the result of a query.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters defined by the M:System.IO.Path.GetInvalidPathChars method.
T:System.ArgumentNullException	path is `null`.
T:System.IO.DirectoryNotFoundException	path is invalid (for example, it is on an unmapped drive).
T:System.IO.FileNotFoundException	The file specified by path was not found.
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.IO.PathTooLongException	path exceeds the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters and file names must be less than 260 characters.
T:System.Security.SecurityException	The caller does not have the required permission.
T:System.UnauthorizedAccessException	path specifies a file that is read-only.-or-This operation is not supported on the current platform.-or- path is a directory.-or-The caller does not have the required permission.

Definition at line 1398 of file File.cs.

◆ ReadLines() [2/2]

static IEnumerable<string> System.IO.File.ReadLines	(	string	path,
		Encoding	encoding
	)

static

Read the lines of a file that has a specified encoding.

Parameters

path	The file to read.
encoding	The encoding that is applied to the contents of the file.

Returns: All the lines of the file, or the lines that are the result of a query.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by the M:System.IO.Path.GetInvalidPathChars method.
T:System.ArgumentNullException	path is `null`.
T:System.IO.DirectoryNotFoundException	path is invalid (for example, it is on an unmapped drive).
T:System.IO.FileNotFoundException	The file specified by path was not found.
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.IO.PathTooLongException	path exceeds the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters and file names must be less than 260 characters.
T:System.Security.SecurityException	The caller does not have the required permission.
T:System.UnauthorizedAccessException	path specifies a file that is read-only.-or-This operation is not supported on the current platform.-or- path is a directory.-or-The caller does not have the required permission.

Definition at line 1429 of file File.cs.

◆ Replace() [1/2]

static void System.IO.File.Replace	(	string	sourceFileName,
		string	destinationFileName,
		string	destinationBackupFileName
	)

static

Replaces the contents of a specified file with the contents of another file, deleting the original file, and creating a backup of the replaced file.

Parameters

sourceFileName	The name of a file that replaces the file specified by destinationFileName .
destinationFileName	The name of the file being replaced.
destinationBackupFileName	The name of the backup file.

Exceptions

T:System.ArgumentException	The path described by the destinationFileName parameter was not of a legal form.-or-The path described by the destinationBackupFileName parameter was not of a legal form.
T:System.ArgumentNullException	The destinationFileName parameter is `null`.
T:System.IO.DriveNotFoundException	An invalid drive was specified.
T:System.IO.FileNotFoundException	The file described by the current T:System.IO.FileInfo object could not be found.-or-The file described by the destinationBackupFileName parameter could not be found.
T:System.IO.IOException	An I/O error occurred while opening the file.- or -The sourceFileName and destinationFileName parameters specify the same file.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.PlatformNotSupportedException	The operating system is Windows 98 Second Edition or earlier and the files system is not NTFS.
T:System.UnauthorizedAccessException	The sourceFileName or destinationFileName parameter specifies a file that is read-only.-or- This operation is not supported on the current platform.-or- Source or destination parameters specify a directory instead of a file.-or- The caller does not have the required permission.

Definition at line 1816 of file File.cs.

◆ Replace() [2/2]

static void System.IO.File.Replace	(	string	sourceFileName,
		string	destinationFileName,
		string	destinationBackupFileName,
		bool	ignoreMetadataErrors
	)

static

Replaces the contents of a specified file with the contents of another file, deleting the original file, and creating a backup of the replaced file and optionally ignores merge errors.

Parameters

sourceFileName	The name of a file that replaces the file specified by destinationFileName .
destinationFileName	The name of the file being replaced.
destinationBackupFileName	The name of the backup file.
ignoreMetadataErrors	`true` to ignore merge errors (such as attributes and access control lists (ACLs)) from the replaced file to the replacement file; otherwise, `false`.

Exceptions

T:System.ArgumentException	The path described by the destinationFileName parameter was not of a legal form.-or-The path described by the destinationBackupFileName parameter was not of a legal form.
T:System.ArgumentNullException	The destinationFileName parameter is `null`.
T:System.IO.DriveNotFoundException	An invalid drive was specified.
T:System.IO.FileNotFoundException	The file described by the current T:System.IO.FileInfo object could not be found.-or-The file described by the destinationBackupFileName parameter could not be found.
T:System.IO.IOException	An I/O error occurred while opening the file.- or -The sourceFileName and destinationFileName parameters specify the same file.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.PlatformNotSupportedException	The operating system is Windows 98 Second Edition or earlier and the files system is not NTFS.
T:System.UnauthorizedAccessException	The sourceFileName or destinationFileName parameter specifies a file that is read-only.-or- This operation is not supported on the current platform.-or- Source or destination parameters specify a directory instead of a file.-or- The caller does not have the required permission.

Definition at line 1843 of file File.cs.

◆ SetAccessControl()

static void System.IO.File.SetAccessControl	(	string	path,
		FileSecurity	fileSecurity
	)

static

Applies access control list (ACL) entries described by a T:System.Security.AccessControl.FileSecurity object to the specified file.

Parameters

path	A file to add or remove access control list (ACL) entries from.
fileSecurity	A T:System.Security.AccessControl.FileSecurity object that describes an ACL entry to apply to the file described by the path parameter.

Exceptions

T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.Runtime.InteropServices.SEHException	The path parameter is `null`.
T:System.SystemException	The file could not be found.
T:System.UnauthorizedAccessException	The path parameter specified a file that is read-only.-or- This operation is not supported on the current platform.-or- The path parameter specified a directory.-or- The caller does not have the required permission.
T:System.ArgumentNullException	The fileSecurity parameter is `null`.

Definition at line 960 of file File.cs.

◆ SetAttributes()

static void System.IO.File.SetAttributes	(	string	path,
		FileAttributes	fileAttributes
	)

static

Sets the specified T:System.IO.FileAttributes of the file on the specified path.

Parameters

path	The path to the file.
fileAttributes	A bitwise combination of the enumeration values.

Exceptions

T:System.ArgumentException	path is empty, contains only white spaces, contains invalid characters, or the file attribute is invalid.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.NotSupportedException	path is in an invalid format.
T:System.IO.DirectoryNotFoundException	The specified path is invalid, (for example, it is on an unmapped drive).
T:System.IO.FileNotFoundException	The file cannot be found.
T:System.UnauthorizedAccessException	path specified a file that is read-only.-or- This operation is not supported on the current platform.-or- path specified a directory.-or- The caller does not have the required permission.

Definition at line 911 of file File.cs.

◆ SetCreationTime()

static void System.IO.File.SetCreationTime	(	string	path,
		DateTime	creationTime
	)

static

Sets the date and time the file was created.

Parameters

path	The file for which to set the creation date and time information.
creationTime	A T:System.DateTime containing the value to set for the creation date and time of path . This value is expressed in local time.

Exceptions

T:System.IO.FileNotFoundException	The specified path was not found.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.IOException	An I/O error occurred while performing the operation.
T:System.ArgumentOutOfRangeException	creationTime specifies a value outside the range of dates, times, or both permitted for this operation.
T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.NotSupportedException	path is in an invalid format.

Definition at line 591 of file File.cs.

◆ SetCreationTimeUtc()

static unsafe void System.IO.File.SetCreationTimeUtc	(	string	path,
		DateTime	creationTimeUtc
	)

static

Sets the date and time, in coordinated universal time (UTC), that the file was created.

Parameters

path	The file for which to set the creation date and time information.
creationTimeUtc	A T:System.DateTime containing the value to set for the creation date and time of path . This value is expressed in UTC time.

Exceptions

T:System.IO.FileNotFoundException	The specified path was not found.
T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.IOException	An I/O error occurred while performing the operation.
T:System.ArgumentOutOfRangeException	creationTime specifies a value outside the range of dates, times, or both permitted for this operation.
T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.NotSupportedException	path is in an invalid format.

Definition at line 612 of file File.cs.

◆ SetLastAccessTime()

static void System.IO.File.SetLastAccessTime	(	string	path,
		DateTime	lastAccessTime
	)

static

Sets the date and time the specified file was last accessed.

Parameters

path	The file for which to set the access date and time information.
lastAccessTime	A T:System.DateTime containing the value to set for the last access date and time of path . This value is expressed in local time.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.FileNotFoundException	The specified path was not found.
T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.NotSupportedException	path is in an invalid format.
T:System.ArgumentOutOfRangeException	lastAccessTime specifies a value outside the range of dates or times permitted for this operation.

Definition at line 689 of file File.cs.

◆ SetLastAccessTimeUtc()

static unsafe void System.IO.File.SetLastAccessTimeUtc	(	string	path,
		DateTime	lastAccessTimeUtc
	)

static

Sets the date and time, in coordinated universal time (UTC), that the specified file was last accessed.

Parameters

path	The file for which to set the access date and time information.
lastAccessTimeUtc	A T:System.DateTime containing the value to set for the last access date and time of path . This value is expressed in UTC time.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.FileNotFoundException	The specified path was not found.
T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.NotSupportedException	path is in an invalid format.
T:System.ArgumentOutOfRangeException	lastAccessTimeUtc specifies a value outside the range of dates or times permitted for this operation.

Definition at line 709 of file File.cs.

◆ SetLastWriteTime()

static void System.IO.File.SetLastWriteTime	(	string	path,
		DateTime	lastWriteTime
	)

static

Sets the date and time that the specified file was last written to.

Parameters

path	The file for which to set the date and time information.
lastWriteTime	A T:System.DateTime containing the value to set for the last write date and time of path . This value is expressed in local time.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.FileNotFoundException	The specified path was not found.
T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.NotSupportedException	path is in an invalid format.
T:System.ArgumentOutOfRangeException	lastWriteTime specifies a value outside the range of dates or times permitted for this operation.

Definition at line 786 of file File.cs.

◆ SetLastWriteTimeUtc()

static unsafe void System.IO.File.SetLastWriteTimeUtc	(	string	path,
		DateTime	lastWriteTimeUtc
	)

static

Sets the date and time, in coordinated universal time (UTC), that the specified file was last written to.

Parameters

path	The file for which to set the date and time information.
lastWriteTimeUtc	A T:System.DateTime containing the value to set for the last write date and time of path . This value is expressed in UTC time.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.FileNotFoundException	The specified path was not found.
T:System.UnauthorizedAccessException	The caller does not have the required permission.
T:System.NotSupportedException	path is in an invalid format.
T:System.ArgumentOutOfRangeException	lastWriteTimeUtc specifies a value outside the range of dates or times permitted for this operation.

Definition at line 806 of file File.cs.

◆ WriteAllBytes()

static void System.IO.File.WriteAllBytes	(	string	path,
		byte []	bytes
	)

static

Creates a new file, writes the specified byte array to the file, and then closes the file. If the target file already exists, it is overwritten.

Parameters

path	The file to write to.
bytes	The bytes to write to the file.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null` or the byte array is empty.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.UnauthorizedAccessException	path specified a file that is read-only.-or- This operation is not supported on the current platform.-or- path specified a directory.-or- The caller does not have the required permission.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have the required permission.

Definition at line 1258 of file File.cs.

◆ WriteAllLines() [1/4]

static void System.IO.File.WriteAllLines	(	string	path,
		string []	contents
	)

static

Creates a new file, write the specified string array to the file, and then closes the file.

Parameters

path	The file to write to.
contents	The string array to write to the file.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	Either path or contents is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.UnauthorizedAccessException	path specified a file that is read-only.-or- This operation is not supported on the current platform.-or- path specified a directory.-or- The caller does not have the required permission.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have the required permission.

Definition at line 1461 of file File.cs.

◆ WriteAllLines() [2/4]

static void System.IO.File.WriteAllLines	(	string	path,
		string []	contents,
		Encoding	encoding
	)

static

Creates a new file, writes the specified string array to the file by using the specified encoding, and then closes the file.

Parameters

path	The file to write to.
contents	The string array to write to the file.
encoding	An T:System.Text.Encoding object that represents the character encoding applied to the string array.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	Either path or contents is `null`.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.UnauthorizedAccessException	path specified a file that is read-only.-or- This operation is not supported on the current platform.-or- path specified a directory.-or- The caller does not have the required permission.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have the required permission.

Definition at line 1494 of file File.cs.

◆ WriteAllLines() [3/4]

static void System.IO.File.WriteAllLines	(	string	path,
		IEnumerable< string >	contents
	)

static

Creates a new file, writes a collection of strings to the file, and then closes the file.

Parameters

path	The file to write to.
contents	The lines to write to the file.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters defined by the M:System.IO.Path.GetInvalidPathChars method.
T:System.ArgumentNullException	Either path or contents is `null`.
T:System.IO.DirectoryNotFoundException	path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.IO.PathTooLongException	path exceeds the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters and file names must be less than 260 characters.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have the required permission.
T:System.UnauthorizedAccessException	path specifies a file that is read-only.-or-This operation is not supported on the current platform.-or- path is a directory.-or-The caller does not have the required permission.

Definition at line 1532 of file File.cs.

◆ WriteAllLines() [4/4]

static void System.IO.File.WriteAllLines	(	string	path,
		IEnumerable< string >	contents,
		Encoding	encoding
	)

static

Creates a new file by using the specified encoding, writes a collection of strings to the file, and then closes the file.

Parameters

path	The file to write to.
contents	The lines to write to the file.
encoding	The character encoding to use.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters defined by the M:System.IO.Path.GetInvalidPathChars method.
T:System.ArgumentNullException	Either path , contents , or encoding is `null`.
T:System.IO.DirectoryNotFoundException	path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.IO.PathTooLongException	path exceeds the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters and file names must be less than 260 characters.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have the required permission.
T:System.UnauthorizedAccessException	path specifies a file that is read-only.-or-This operation is not supported on the current platform.-or- path is a directory.-or-The caller does not have the required permission.

Definition at line 1567 of file File.cs.

◆ WriteAllText() [1/2]

static void System.IO.File.WriteAllText	(	string	path,
		string	contents
	)

static

Creates a new file, writes the specified string to the file, and then closes the file. If the target file already exists, it is overwritten.

Parameters

path	The file to write to.
contents	The string to write to the file.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null` or contents is empty.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.UnauthorizedAccessException	path specified a file that is read-only.-or- This operation is not supported on the current platform.-or- path specified a directory.-or- The caller does not have the required permission.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have the required permission.

Definition at line 1115 of file File.cs.

◆ WriteAllText() [2/2]

static void System.IO.File.WriteAllText	(	string	path,
		string	contents,
		Encoding	encoding
	)

static

Creates a new file, writes the specified string to the file using the specified encoding, and then closes the file. If the target file already exists, it is overwritten.

Parameters

path	The file to write to.
contents	The string to write to the file.
encoding	The encoding to apply to the string.

Exceptions

T:System.ArgumentException	path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by F:System.IO.Path.InvalidPathChars.
T:System.ArgumentNullException	path is `null` or contents is empty.
T:System.IO.PathTooLongException	The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
T:System.IO.DirectoryNotFoundException	The specified path is invalid (for example, it is on an unmapped drive).
T:System.IO.IOException	An I/O error occurred while opening the file.
T:System.UnauthorizedAccessException	path specified a file that is read-only.-or- This operation is not supported on the current platform.-or- path specified a directory.-or- The caller does not have the required permission.
T:System.NotSupportedException	path is in an invalid format.
T:System.Security.SecurityException	The caller does not have the required permission.

Definition at line 1146 of file File.cs.

The documentation for this class was generated from the following file:

D:/All cs/System.IO/File.cs

Static Public Member Functions

Detailed Description

Member Function Documentation

◆ AppendAllLines() [1/2]

◆ AppendAllLines() [2/2]

◆ AppendAllText() [1/2]

◆ AppendAllText() [2/2]

◆ AppendText()

◆ Copy() [1/2]

◆ Copy() [2/2]

◆ Create() [1/4]

◆ Create() [2/4]

◆ Create() [3/4]

◆ Create() [4/4]

◆ CreateText()

◆ Decrypt()

◆ Delete()

◆ Encrypt()

◆ Exists()

◆ GetAccessControl() [1/2]

◆ GetAccessControl() [2/2]

◆ GetAttributes()

◆ GetCreationTime()

◆ GetCreationTimeUtc()

◆ GetLastAccessTime()

◆ GetLastAccessTimeUtc()

◆ GetLastWriteTime()

◆ GetLastWriteTimeUtc()

◆ Move()

◆ Open() [1/3]

◆ Open() [2/3]

◆ Open() [3/3]

◆ OpenRead()

◆ OpenText()

◆ OpenWrite()

◆ ReadAllBytes()

◆ ReadAllLines() [1/2]

◆ ReadAllLines() [2/2]

◆ ReadAllText() [1/2]

◆ ReadAllText() [2/2]

◆ ReadLines() [1/2]

◆ ReadLines() [2/2]

◆ Replace() [1/2]

◆ Replace() [2/2]

◆ SetAccessControl()

◆ SetAttributes()

◆ SetCreationTime()

◆ SetCreationTimeUtc()

◆ SetLastAccessTime()

◆ SetLastAccessTimeUtc()

◆ SetLastWriteTime()

◆ SetLastWriteTimeUtc()

◆ WriteAllBytes()

◆ WriteAllLines() [1/4]

◆ WriteAllLines() [2/4]

◆ WriteAllLines() [3/4]

◆ WriteAllLines() [4/4]

◆ WriteAllText() [1/2]

◆ WriteAllText() [2/2]