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Parallel.ForEachAsync Method

Definition

Overloads

ForEachAsync<TSource>(IAsyncEnumerable<TSource>, Func<TSource,CancellationToken,ValueTask>)

Executes a for-each operation on an IEnumerable<T> in which iterations may run in parallel.

ForEachAsync<TSource>(IEnumerable<TSource>, Func<TSource,CancellationToken,ValueTask>)

Executes a for-each operation on an IEnumerable<T> in which iterations may run in parallel.

ForEachAsync<TSource>(IAsyncEnumerable<TSource>, CancellationToken, Func<TSource,CancellationToken,ValueTask>)

Executes a for-each operation on an IEnumerable<T> in which iterations may run in parallel.

ForEachAsync<TSource>(IAsyncEnumerable<TSource>, ParallelOptions, Func<TSource,CancellationToken,ValueTask>)

Executes a for-each operation on an IEnumerable<T> in which iterations may run in parallel.

ForEachAsync<TSource>(IEnumerable<TSource>, CancellationToken, Func<TSource,CancellationToken,ValueTask>)

Executes a for-each operation on an IEnumerable<T> in which iterations may run in parallel.

ForEachAsync<TSource>(IEnumerable<TSource>, ParallelOptions, Func<TSource,CancellationToken,ValueTask>)

Executes a for-each operation on an IEnumerable<T> in which iterations may run in parallel.

ForEachAsync<TSource>(IAsyncEnumerable<TSource>, Func<TSource,CancellationToken,ValueTask>)

Source:
Parallel.ForEachAsync.cs
Source:
Parallel.ForEachAsync.cs
Source:
Parallel.ForEachAsync.cs

Executes a for-each operation on an IEnumerable<T> in which iterations may run in parallel.

public:
generic <typename TSource>
 static System::Threading::Tasks::Task ^ ForEachAsync(System::Collections::Generic::IAsyncEnumerable<TSource> ^ source, Func<TSource, System::Threading::CancellationToken, System::Threading::Tasks::ValueTask> ^ body);
public static System.Threading.Tasks.Task ForEachAsync<TSource> (System.Collections.Generic.IAsyncEnumerable<TSource> source, Func<TSource,System.Threading.CancellationToken,System.Threading.Tasks.ValueTask> body);
static member ForEachAsync : System.Collections.Generic.IAsyncEnumerable<'Source> * Func<'Source, System.Threading.CancellationToken, System.Threading.Tasks.ValueTask> -> System.Threading.Tasks.Task
Public Shared Function ForEachAsync(Of TSource) (source As IAsyncEnumerable(Of TSource), body As Func(Of TSource, CancellationToken, ValueTask)) As Task

Type Parameters

TSource

The type of the data in the source.

Parameters

source
IAsyncEnumerable<TSource>

An enumerable data source.

body
Func<TSource,CancellationToken,ValueTask>

An asynchronous delegate that is invoked once per element in the data source.

Returns

A task that represents the entire for-each operation.

Exceptions

source or body is null.

Remarks

The operation will execute at most ProcessorCount operations in parallel.

Applies to

ForEachAsync<TSource>(IEnumerable<TSource>, Func<TSource,CancellationToken,ValueTask>)

Source:
Parallel.ForEachAsync.cs
Source:
Parallel.ForEachAsync.cs
Source:
Parallel.ForEachAsync.cs

Executes a for-each operation on an IEnumerable<T> in which iterations may run in parallel.

public:
generic <typename TSource>
 static System::Threading::Tasks::Task ^ ForEachAsync(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, System::Threading::CancellationToken, System::Threading::Tasks::ValueTask> ^ body);
public static System.Threading.Tasks.Task ForEachAsync<TSource> (System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,System.Threading.CancellationToken,System.Threading.Tasks.ValueTask> body);
static member ForEachAsync : seq<'Source> * Func<'Source, System.Threading.CancellationToken, System.Threading.Tasks.ValueTask> -> System.Threading.Tasks.Task
Public Shared Function ForEachAsync(Of TSource) (source As IEnumerable(Of TSource), body As Func(Of TSource, CancellationToken, ValueTask)) As Task

Type Parameters

TSource

The type of the data in the source.

Parameters

source
IEnumerable<TSource>

An enumerable data source.

body
Func<TSource,CancellationToken,ValueTask>

An asynchronous delegate that is invoked once per element in the data source.

Returns

A task that represents the entire for-each operation.

Exceptions

source or body is null.

Remarks

The operation will execute at most ProcessorCount operations in parallel.

Applies to

ForEachAsync<TSource>(IAsyncEnumerable<TSource>, CancellationToken, Func<TSource,CancellationToken,ValueTask>)

Source:
Parallel.ForEachAsync.cs
Source:
Parallel.ForEachAsync.cs
Source:
Parallel.ForEachAsync.cs

Executes a for-each operation on an IEnumerable<T> in which iterations may run in parallel.

public:
generic <typename TSource>
 static System::Threading::Tasks::Task ^ ForEachAsync(System::Collections::Generic::IAsyncEnumerable<TSource> ^ source, System::Threading::CancellationToken cancellationToken, Func<TSource, System::Threading::CancellationToken, System::Threading::Tasks::ValueTask> ^ body);
public static System.Threading.Tasks.Task ForEachAsync<TSource> (System.Collections.Generic.IAsyncEnumerable<TSource> source, System.Threading.CancellationToken cancellationToken, Func<TSource,System.Threading.CancellationToken,System.Threading.Tasks.ValueTask> body);
static member ForEachAsync : System.Collections.Generic.IAsyncEnumerable<'Source> * System.Threading.CancellationToken * Func<'Source, System.Threading.CancellationToken, System.Threading.Tasks.ValueTask> -> System.Threading.Tasks.Task
Public Shared Function ForEachAsync(Of TSource) (source As IAsyncEnumerable(Of TSource), cancellationToken As CancellationToken, body As Func(Of TSource, CancellationToken, ValueTask)) As Task

Type Parameters

TSource

The type of the data in the source.

Parameters

source
IAsyncEnumerable<TSource>

An enumerable data source.

cancellationToken
CancellationToken

A cancellation token that may be used to cancel the for-each operation.

body
Func<TSource,CancellationToken,ValueTask>

An asynchronous delegate that is invoked once per element in the data source.

Returns

A task that represents the entire for-each operation.

Exceptions

source or body is null.

The cancellation token was canceled. This exception is stored into the returned task.

Remarks

The operation will execute at most ProcessorCount operations in parallel.

Applies to

ForEachAsync<TSource>(IAsyncEnumerable<TSource>, ParallelOptions, Func<TSource,CancellationToken,ValueTask>)

Source:
Parallel.ForEachAsync.cs
Source:
Parallel.ForEachAsync.cs
Source:
Parallel.ForEachAsync.cs

Executes a for-each operation on an IEnumerable<T> in which iterations may run in parallel.

public:
generic <typename TSource>
 static System::Threading::Tasks::Task ^ ForEachAsync(System::Collections::Generic::IAsyncEnumerable<TSource> ^ source, System::Threading::Tasks::ParallelOptions ^ parallelOptions, Func<TSource, System::Threading::CancellationToken, System::Threading::Tasks::ValueTask> ^ body);
public static System.Threading.Tasks.Task ForEachAsync<TSource> (System.Collections.Generic.IAsyncEnumerable<TSource> source, System.Threading.Tasks.ParallelOptions parallelOptions, Func<TSource,System.Threading.CancellationToken,System.Threading.Tasks.ValueTask> body);
static member ForEachAsync : System.Collections.Generic.IAsyncEnumerable<'Source> * System.Threading.Tasks.ParallelOptions * Func<'Source, System.Threading.CancellationToken, System.Threading.Tasks.ValueTask> -> System.Threading.Tasks.Task
Public Shared Function ForEachAsync(Of TSource) (source As IAsyncEnumerable(Of TSource), parallelOptions As ParallelOptions, body As Func(Of TSource, CancellationToken, ValueTask)) As Task

Type Parameters

TSource

The type of the data in the source.

Parameters

source
IAsyncEnumerable<TSource>

An enumerable data source.

parallelOptions
ParallelOptions

An object that configures the behavior of this operation.

body
Func<TSource,CancellationToken,ValueTask>

An asynchronous delegate that is invoked once per element in the data source.

Returns

A task that represents the entire for-each operation.

Exceptions

source or body is null.

Applies to

ForEachAsync<TSource>(IEnumerable<TSource>, CancellationToken, Func<TSource,CancellationToken,ValueTask>)

Source:
Parallel.ForEachAsync.cs
Source:
Parallel.ForEachAsync.cs
Source:
Parallel.ForEachAsync.cs

Executes a for-each operation on an IEnumerable<T> in which iterations may run in parallel.

public:
generic <typename TSource>
 static System::Threading::Tasks::Task ^ ForEachAsync(System::Collections::Generic::IEnumerable<TSource> ^ source, System::Threading::CancellationToken cancellationToken, Func<TSource, System::Threading::CancellationToken, System::Threading::Tasks::ValueTask> ^ body);
public static System.Threading.Tasks.Task ForEachAsync<TSource> (System.Collections.Generic.IEnumerable<TSource> source, System.Threading.CancellationToken cancellationToken, Func<TSource,System.Threading.CancellationToken,System.Threading.Tasks.ValueTask> body);
static member ForEachAsync : seq<'Source> * System.Threading.CancellationToken * Func<'Source, System.Threading.CancellationToken, System.Threading.Tasks.ValueTask> -> System.Threading.Tasks.Task
Public Shared Function ForEachAsync(Of TSource) (source As IEnumerable(Of TSource), cancellationToken As CancellationToken, body As Func(Of TSource, CancellationToken, ValueTask)) As Task

Type Parameters

TSource

The type of the data in the source.

Parameters

source
IEnumerable<TSource>

An enumerable data source.

cancellationToken
CancellationToken

A cancellation token that may be used to cancel the for-each operation.

body
Func<TSource,CancellationToken,ValueTask>

An asynchronous delegate that is invoked once per element in the data source.

Returns

A task that represents the entire for-each operation.

Exceptions

source or body is null.

The cancellation token was canceled. This exception is stored into the returned task.

Remarks

The operation will execute at most ProcessorCount operations in parallel.

Applies to

ForEachAsync<TSource>(IEnumerable<TSource>, ParallelOptions, Func<TSource,CancellationToken,ValueTask>)

Source:
Parallel.ForEachAsync.cs
Source:
Parallel.ForEachAsync.cs
Source:
Parallel.ForEachAsync.cs

Executes a for-each operation on an IEnumerable<T> in which iterations may run in parallel.

public:
generic <typename TSource>
 static System::Threading::Tasks::Task ^ ForEachAsync(System::Collections::Generic::IEnumerable<TSource> ^ source, System::Threading::Tasks::ParallelOptions ^ parallelOptions, Func<TSource, System::Threading::CancellationToken, System::Threading::Tasks::ValueTask> ^ body);
public static System.Threading.Tasks.Task ForEachAsync<TSource> (System.Collections.Generic.IEnumerable<TSource> source, System.Threading.Tasks.ParallelOptions parallelOptions, Func<TSource,System.Threading.CancellationToken,System.Threading.Tasks.ValueTask> body);
static member ForEachAsync : seq<'Source> * System.Threading.Tasks.ParallelOptions * Func<'Source, System.Threading.CancellationToken, System.Threading.Tasks.ValueTask> -> System.Threading.Tasks.Task
Public Shared Function ForEachAsync(Of TSource) (source As IEnumerable(Of TSource), parallelOptions As ParallelOptions, body As Func(Of TSource, CancellationToken, ValueTask)) As Task

Type Parameters

TSource

The type of the data in the source.

Parameters

source
IEnumerable<TSource>

An enumerable data source.

parallelOptions
ParallelOptions

An object that configures the behavior of this operation.

body
Func<TSource,CancellationToken,ValueTask>

An asynchronous delegate that is invoked once per element in the data source.

Returns

A task that represents the entire for-each operation.

Exceptions

source or body is null.

Applies to