System.Linq Namespace Reference

Classes
class	Enumerable
	Provides a set of static (Shared in Visual Basic) methods for querying objects that implement T:System.Collections.Generic.IEnumerable`1. More...
class	EnumerableExecutor
	Represents an expression tree and provides functionality to execute the expression tree after rewriting it. More...
class	EnumerableQuery
	Represents an T:System.Collections.IEnumerable as an T:System.Linq.EnumerableQuery data source. More...
interface	IGrouping
	Represents a collection of objects that have a common key. More...
interface	ILookup
	Defines an indexer, size property, and Boolean search method for data structures that map keys to T:System.Collections.Generic.IEnumerable`1 sequences of values. More...
interface	IOrderedEnumerable
	Represents a sorted sequence. More...
interface	IOrderedQueryable
	Represents the result of a sorting operation. More...
interface	IQueryable
	Provides functionality to evaluate queries against a specific data source wherein the type of the data is not specified. More...
interface	IQueryProvider
	Defines methods to create and execute queries that are described by an T:System.Linq.IQueryable object. More...
class	Lookup
	Represents a collection of keys each mapped to one or more values. More...
class	OrderedParallelQuery
	Represents a sorted, parallel sequence. More...
class	ParallelEnumerable
	Provides a set of methods for querying objects that implement ParallelQuery{TSource}. This is the parallel equivalent of T:System.Linq.Enumerable. More...
class	ParallelQuery
	Represents a parallel sequence. More...
class	Queryable
	Provides a set of static (Shared in Visual Basic) methods for querying data structures that implement T:System.Linq.IQueryable`1. More...

Enumerations
enum	ParallelExecutionMode { ParallelExecutionMode.Default, ParallelExecutionMode.ForceParallelism }
	The query execution mode is a hint that specifies how the system should handle performance trade-offs when parallelizing queries. More...
enum	ParallelMergeOptions { ParallelMergeOptions.Default, ParallelMergeOptions.NotBuffered, ParallelMergeOptions.AutoBuffered, ParallelMergeOptions.FullyBuffered }
	Specifies the preferred type of output merge to use in a query. In other words, it indicates how PLINQ should merge the results from the various partitions back into a single result sequence. This is a hint only, and may not be respected by the system when parallelizing all queries. More...

Enumeration Type Documentation

ParallelExecutionMode

enum System.Linq.ParallelExecutionMode

strong

The query execution mode is a hint that specifies how the system should handle performance trade-offs when parallelizing queries.

Enumerator
Default	This is the default setting. PLINQ will examine the query's structure and will only parallelize the query if will likely result in speedup. If the query structure indicates that speedup is not likely to be obtained, then PLINQ will execute the query as an ordinary LINQ to Objects query.
ForceParallelism	Parallelize the entire query, even if that means using high-overhead algorithms. Use this flag in cases where you know that parallel execution of the query will result in speedup, but PLINQ in the Default mode would execute it as sequential.

Definition at line 5 of file ParallelExecutionMode.cs.

ParallelMergeOptions

enum System.Linq.ParallelMergeOptions

strong

Specifies the preferred type of output merge to use in a query. In other words, it indicates how PLINQ should merge the results from the various partitions back into a single result sequence. This is a hint only, and may not be respected by the system when parallelizing all queries.

Enumerator
Default	Use the default merge type, which is AutoBuffered.
NotBuffered	Use a merge without output buffers. As soon as result elements have been computed, make that element available to the consumer of the query.
AutoBuffered	Use a merge with output buffers of a size chosen by the system. Results will accumulate into an output buffer before they are available to the consumer of the query.
FullyBuffered	Use a merge with full output buffers. The system will accumulate all of the results before making any of them available to the consumer of the query.

Definition at line 5 of file ParallelMergeOptions.cs.