FileIOPermissionAccess.cs

using System.Runtime.InteropServices;

namespace System.Security.Permissions
{
    [Serializable]
    [Flags]
    [ComVisible(true)]
    public enum FileIOPermissionAccess
    {
        NoAccess = 0x0,
        Read = 0x1,
        Write = 0x2,
        Append = 0x4,
        PathDiscovery = 0x8,
        AllAccess = 0xF
    }
}