ContinueWith(TNewResult) Method (Func(Task(TResult), TNewResult))

Task Parallel System.Threading

previous page next page

Creates a continuation that executes when the target Task<(Of <(TResult>)>) completes.

Namespace: System.Threading.Tasks
Assembly: System.Threading (in System.Threading.dll)

Syntax

Visual Basic (Declaration)
Public Function ContinueWith(Of TNewResult) ( _ continuationFunction As Func(Of Task(Of TResult), TNewResult) _ ) As Task(Of TNewResult)

C#
public Task<TNewResult> ContinueWith<TNewResult>( Func<Task<TResult>, TNewResult> continuationFunction )

Parameters

continuationFunction: Type: System..::.Func<(Of <(Task<(Of <(TResult>)>), TNewResult>)>)
A function to run when the Task<(Of <(TResult>)>) completes. When run, the delegate will be passed the completed task as an argument.

Type Parameters

TNewResult: The type of the result produced by the continuation.

Return Value

A new continuation Task<(Of <(TResult>)>).

Remarks

The returned Task<(Of <(TResult>)>) will not be scheduled for execution until the current task has completed, whether it completes due to running to completion successfully, faulting due to an unhandled exception, or exiting out early due to being canceled.

Exceptions

Exception	Condition
System..::.ArgumentNullException	The continuationFunction argument is null.
System..::.ObjectDisposedException	The Task<(Of <(TResult>)>) has been disposed.