This documentation is archived and is not being maintained.

WorkflowApplication.BeginRun Method (AsyncCallback, Object)

Starts or resumes a workflow instance asynchronously using the specified callback method and user-provided state.

Namespace:  System.Activities
Assembly:  System.Activities (in System.Activities.dll)

public IAsyncResult BeginRun(
	AsyncCallback callback,
	Object state


Type: System.AsyncCallback
The method to be called when the resume operation has completed.
Type: System.Object
An optional application-specific object that contains information about the asynchronous operation.

Return Value

Type: System.IAsyncResult
A reference to the asynchronous run operation.

To determine whether the run operation was successful, call EndRun(IAsyncResult). EndRun(IAsyncResult) can be called from inside or outside of the method referenced in the callback parameter. If EndRun(IAsyncResult) is called before the resume operation completes, it blocks until the resume operation completes. By default, the resume operation must complete in 30 seconds or a TimeoutException is thrown from EndRun(IAsyncResult).

This method starts or resumes a workflow asynchronously using the IAsyncResult asynchronous design pattern. For more information, seeAsynchronous Programming Overview.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.