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ContinueWith(TResult) Method (Func(Task, Object, TResult), Object)
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Task.ContinueWith<TResult> Method (Func<Task, Object, TResult>, Object)

.NET Framework 4.6 and 4.5

Creates a continuation that receives caller-supplied state information and executes asynchronously when the target Task completes and returns a value.

Namespace:  System.Threading.Tasks
Assemblies:   System.Threading.Tasks (in System.Threading.Tasks.dll)
  mscorlib (in mscorlib.dll)

public Task<TResult> ContinueWith<TResult>(
	Func<Task, Object, TResult> continuationFunction,
	Object state
)

Type Parameters

TResult

The type of the result produced by the continuation.

Parameters

continuationFunction
Type: System.Func<Task, Object, TResult>

A function to run when the Task completes. When run, the delegate will be passed the completed task and the caller-supplied state object as arguments.

state
Type: System.Object

An object representing data to be used by the continuation function.

Return Value

Type: System.Threading.Tasks.Task<TResult>
A new continuation Task<TResult>.

ExceptionCondition
ArgumentNullException

The continuationFunction argument is null.

The returned Task<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.

.NET Framework

Supported in: 4.6, 4.5

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8
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