• Article

TaskFactory.FromAsync Method (Func<AsyncCallback, Object, IAsyncResult>, Action<IAsyncResult>, Object)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Creates a Task that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.

Namespace:  System.Threading.Tasks
Assembly:  mscorlib (in mscorlib.dll)

Syntax

'Declaration
Public Function FromAsync ( _
    beginMethod As Func(Of AsyncCallback, Object, IAsyncResult), _
    endMethod As Action(Of IAsyncResult), _
    state As Object _
) As Task

public Task FromAsync(
    Func<AsyncCallback, Object, IAsyncResult> beginMethod,
    Action<IAsyncResult> endMethod,
    Object state
)

Parameters

  • state
    Type: System.Object
    An object containing data to be used by the beginMethod delegate.

Return Value

Type: System.Threading.Tasks.Task
The created Task that represents the asynchronous operation.

Exceptions

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.

Remarks

This method throws any exceptions thrown by the beginMethod.

Version Information

Silverlight

Supported in: 5

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.