TaskFactory.FromAsync<TResult> Method (IAsyncResult, Func<IAsyncResult, TResult>)
Assembly: mscorlib (in mscorlib.dll)
public Task<TResult> FromAsync<TResult>( IAsyncResult asyncResult, Func<IAsyncResult, TResult> endMethod )
The IAsyncResult whose completion should trigger the processing of the endMethod.
Return ValueType: System.Threading.Tasks.Task< >
A Task<TResult> that represents the asynchronous operation.
The type of the result available through the Task<TResult>.
The exception that is thrown when the asyncResult argument is null.
The exception that is thrown when the endMethod argument is null.
The FromAsync overloads that take an asyncResult parameter are not as efficient as the overloads that take a beginMethod parameter. If performance is an issue, use the overloads that provide the beginMethod/endMethod pattern.
Available since 8
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Available since 5.0
Windows Phone Silverlight
Available since 8.0
Available since 8.1