TaskCompletionSourceExtensions.SetFromTask(TSource, TResult) Method (TaskCompletionSource(TResult), Task(TSource))

TaskCompletionSourceExtensions.SetFromTask<TSource, TResult> Method (TaskCompletionSource<TResult>, Task<TSource>)

Transfers the result of a Task<TResult> to a TaskCompletionSource<TResult>.

Namespace: Rackspace.Threading
Assembly: Rackspace.Threading (in Rackspace.Threading.dll) Version: 2.1.0-beta1

Syntax

public static void SetFromTask<TSource, TResult>(
	this TaskCompletionSource<TResult> taskCompletionSource,
	Task<TSource> task
)
where TSource : TResult

<ExtensionAttribute>
Public Shared Sub SetFromTask(Of TSource As TResult, TResult) ( 
	taskCompletionSource As TaskCompletionSource(Of TResult),
	task As Task(Of TSource)
)

public:
[ExtensionAttribute]
generic<typename TSource, typename TResult>
where TSource : TResult
static void SetFromTask(
	TaskCompletionSource<TResult>^ taskCompletionSource, 
	Task<TSource>^ task
)

[<ExtensionAttribute>]
static member SetFromTask : 
        taskCompletionSource : TaskCompletionSource<'TResult> * 
        task : Task<'TSource> -> unit  when 'TSource : 'TResult

Parameters

taskCompletionSource: Type: System.Threading.Tasks.TaskCompletionSource<TResult>
The TaskCompletionSource<TResult> instance.
task: Type: System.Threading.Tasks.Task<TSource>
The result task whose completion results should be transferred.

Type Parameters

TSource: Specifies the result type of the source Task<TResult>.
TResult: Specifies the result type of the TaskCompletionSource<TResult>.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type TaskCompletionSource<TResult>. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Exceptions

Exception	Condition
ArgumentNullException	If taskCompletionSource is null. -or- If task is null.
ObjectDisposedException	If the underlying Task<TResult> of taskCompletionSource was disposed.
InvalidOperationException	If the underlying Task<TResult> produced by taskCompletionSource is already in one of the three final states: RanToCompletion, Faulted, or Canceled.

Exception

Condition

ArgumentNullException

If taskCompletionSource is null.

-or-

If task is null.

ObjectDisposedException

If the underlying Task<TResult> of taskCompletionSource was disposed.

InvalidOperationException

If the underlying Task<TResult> produced by taskCompletionSource is already in one of the three final states: RanToCompletion, Faulted, or Canceled.

Remarks

If task is in the RanToCompletion state, the result of the task is assigned to the TaskCompletionSource<TResult> using the SetResult(TResult) method.