TaskFactory.FromAsync<TResult> Method (IAsyncResult, Func<IAsyncResult, TResult>)
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Creates a Task<TResult> that executes an end method function when a specified IAsyncResult completes.
Assembly: mscorlib (in mscorlib.dll)
public Task<TResult> FromAsync<TResult>(
IAsyncResult asyncResult,
Func<IAsyncResult, TResult> endMethod
)
Type Parameters
- TResult
The type of the result available through the Task<TResult>.
Parameters
- asyncResult
- Type: System.IAsyncResult
The IAsyncResult whose completion should trigger the processing of the endMethod.
- endMethod
- Type: System.Func<IAsyncResult, TResult>
The function delegate that processes the completed asyncResult.
Return Value
Type: System.Threading.Tasks.Task<TResult>A Task<TResult> that represents the asynchronous operation.
| Exception | Condition |
|---|---|
| ArgumentNullException | The exception that is thrown when the asyncResult argument is null. -or- The exception that is thrown when the endMethod argument is null. |
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