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Partitioner<TSource> Class

.NET Framework 4.6 and 4.5

Represents a particular manner of splitting a data source into multiple partitions.

Namespace:  System.Collections.Concurrent
Assemblies:   mscorlib (in mscorlib.dll)
  System.Collections.Concurrent (in System.Collections.Concurrent.dll)

[HostProtectionAttribute(SecurityAction::LinkDemand, Synchronization = true, 
	ExternalThreading = true)]
generic<typename TSource>
public ref class Partitioner abstract

Type Parameters

TSource

Type of the elements in the collection.

The Partitioner<TSource> type exposes the following members.

  NameDescription
Protected methodSupported by Portable Class LibraryPartitioner<TSource>Creates a new partitioner instance.
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  NameDescription
Public propertySupported by Portable Class LibrarySupportsDynamicPartitionsGets whether additional partitions can be created dynamically.
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  NameDescription
Public methodSupported by Portable Class LibraryEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodSupported by Portable Class LibraryFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodSupported by Portable Class LibraryGetDynamicPartitionsCreates an object that can partition the underlying collection into a variable number of partitions.
Public methodSupported by Portable Class LibraryGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodSupported by Portable Class LibraryGetPartitionsPartitions the underlying collection into the given number of partitions.
Public methodSupported by Portable Class LibraryGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodSupported by Portable Class LibraryMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodSupported by Portable Class LibraryToStringReturns a string that represents the current object. (Inherited from Object.)
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  NameDescription
Public Extension MethodSupported by Portable Class LibraryAsParallel<TSource>()Overloaded. Enables parallelization of a query, as sourced by a custom partitioner that is responsible for splitting the input sequence into partitions. (Defined by ParallelEnumerable.)
Public Extension MethodSupported by Portable Class LibraryAsParallel<TSource>()Overloaded. (Defined by ParallelEnumerable.)
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For more information, see Custom Partitioners for PLINQ and TPL.

NoteNote

The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: Synchronization | ExternalThreading. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

The following example shows how to implement a partitioner that returns a single element at a time:

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

The static methods on Partitioner<TSource> are all thread-safe and may be used concurrently from multiple threads. However, while a created partitioner is in use, the underlying data source should not be modified, whether from the same thread that is using a partitioner or from a separate thread.

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