WindowsRuntimeSystemExtensions.AsTask(Of TResult) Method (IAsyncOperation(Of TResult))

.NET Framework (current version)

Returns a task that represents a Windows Runtime asynchronous operation returns a result.

Namespace:  System
Assembly:  System.Runtime.WindowsRuntime (in System.Runtime.WindowsRuntime.dll)

<ExtensionAttribute> _
Public Shared Function AsTask(Of TResult) ( _
	source As IAsyncOperation(Of TResult) _
) As Task(Of TResult)

Type Parameters


The type of object that returns the result of the asynchronous operation.


Type: IAsyncOperation(Of TResult)

The asynchronous operation.

Return Value

Type: System.Threading.Tasks.Task(Of TResult)
A task that represents the asynchronous operation.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IAsyncOperation(Of 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).


source is Nothing.

Use this method to get a Task(Of TResult) object for a Windows Runtime asynchronous operation. Task(Of TResult) objects simplify the coordination of asynchronous operations.

.NET Framework

Supported in: 4.6, 4.5

.NET for Windows Phone apps

Supported in: Windows Phone Silverlight 8