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| .NET Framework Class Library |
| TaskExtensions..::.Unwrap<(Of <(TResult>)>) Method (Task<(Of <(Task<(Of <(TResult>)>)>)>)) |
| TaskExtensions Class See Also Send Feedback |
Creates a proxy Task{TResult} that represents the
asynchronous operation of a Task{Task{TResult}}.
Unwraps a Task that returns another Task.
Namespace:
System.Threading.Tasks
Assembly:
System.Threading (in System.Threading.dll)
Syntax
| Visual Basic (Declaration) |
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Public Shared Function Unwrap(Of TResult) ( _ task As Task(Of Task(Of TResult)) _ ) As Task(Of TResult) |
| C# |
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public static Task<TResult> Unwrap<TResult>( Task<Task<TResult>> task ) |
Parameters
- task
- Type: System.Threading.Tasks..::.Task<(Of <(Task<(Of <(TResult>)>)>)>)
The Task{Task{TResult}} to unwrap.
Type Parameters
- TResult
Return Value
A Task{TResult} that represents the asynchronous operation of the provided Task{Task{TResult}}.Remarks
It is often useful to be able to return a Task{TResult} from a Task{TResult}, where the inner Task{TResult}
represents work done as part of the outer Task{TResult}. However, doing so results in a Task{Task{TResult}},
which, if not dealt with carefully, could produce unexpected behavior. Unwrap solves this problem by
creating a proxy Task{TResult} that represents the entire asynchronous operation of such a Task{Task{TResult}}.
Exceptions
| Exception | Condition |
|---|---|
| System..::.ArgumentNullException | The exception that is thrown if the task argument is null. |
See Also
