TaskFactory::FromAsync<TArg1, TArg2, TArg3> Method (Func<TArg1, TArg2, TArg3, AsyncCallback^, Object^, IAsyncResult^>^, Action<IAsyncResult^>^, TArg1, TArg2, TArg3, Object^, TaskCreationOptions)
Creates a Task that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.
Assembly: mscorlib (in mscorlib.dll)
public: generic<typename TArg1, typename TArg2, typename TArg3> Task^ FromAsync( Func<TArg1, TArg2, TArg3, AsyncCallback^, Object^, IAsyncResult^>^ beginMethod, Action<IAsyncResult^>^ endMethod, TArg1 arg1, TArg2 arg2, TArg3 arg3, Object^ state, TaskCreationOptions creationOptions )
Parameters
- beginMethod
-
Type:
System::Func<TArg1, TArg2, TArg3, AsyncCallback^, Object^, IAsyncResult^>^
The delegate that begins the asynchronous operation.
- endMethod
-
Type:
System::Action<IAsyncResult^>^
The delegate that ends the asynchronous operation.
- arg1
-
Type:
TArg1
The first argument passed to the beginMethod delegate.
- arg2
-
Type:
TArg2
The second argument passed to the beginMethod delegate.
- arg3
-
Type:
TArg3
The third argument passed to the beginMethod delegate.
- state
-
Type:
System::Object^
An object containing data to be used by the beginMethod delegate.
- creationOptions
-
Type:
System.Threading.Tasks::TaskCreationOptions
The TaskCreationOptions value that controls the behavior of the created Task.
Return Value
Type: System.Threading.Tasks::Task^The created Task that represents the asynchronous operation.
Type Parameters
- TArg1
The type of the second argument passed to beginMethod delegate.
- TArg2
The type of the third argument passed to beginMethod delegate.
- TArg3
The type of the first argument passed to the beginMethod delegate.
| Exception | Condition |
|---|---|
| ArgumentNullException | The exception that is thrown when the beginMethod argument is null. -or- The exception that is thrown when the endMethod argument is null. |
| ArgumentOutOfRangeException | The exception that is thrown when the creationOptions argument specifies an invalid TaskCreationOptions value. The exception that is thrown when the creationOptions argument specifies an invalid TaskCreationOptions value. For more information, see the Remarks for FromAsync |
The beginMethod delegate is started on the thread that FromAsync is running on. This method throws any exceptions thrown by the beginMethod.
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 5.0
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1