AsTask(TResult, TProgress) Method ((TResult, TProgress), CancellationToken, IProgress(TProgress))

WindowsRuntimeSystemExtensions.AsTask<TResult, TProgress> Method (<TResult, TProgress>, CancellationToken, IProgress<TProgress>)

For apps that target Windows Phone OS 7.0 and 7.1, do not use any members of this type in your app. If you do, your code will throw a MethodAccessException. This type is security-critical, which restricts it to internal use by the .NET Framework for Windows Phone class library.

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Returns a task that represents a Windows Runtime asynchronous operation that returns a result, reports progress, and can be cancelled.

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

public static Task<TResult> AsTask<TResult, TProgress>(
	this IAsyncOperationWithProgress<TResult, TProgress> source,
	CancellationToken cancellationToken,
	IProgress<TProgress> progress

Type Parameters


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


The type of object that provides data that indicates progress.


Type: IAsyncOperationWithProgress<TResult, TProgress>
The asynchronous operation.
Type: System.Threading.CancellationToken
A token that can be used to request cancellation of the asynchronous operation.
Type: System.IProgress<TProgress>
An object that receives progress updates.

Return Value

Type: System.Threading.Tasks.Task<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 IAsyncOperationWithProgress<TResult, TProgress>. When you use instance method syntax to call this method, omit the first parameter.

Windows Phone OS

Supported in: 8.1, 8.0

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