WorkflowApplication.BeginPersist Method (AsyncCallback, Object)

.NET Framework (current version)

Persists a workflow instance to an instance store asynchronously using the specified callback method and user-provided state.

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

public IAsyncResult BeginPersist(
	AsyncCallback callback,
	object state


Type: System.AsyncCallback

The method to be called when the persist 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 persist operation.

To determine whether the persist operation was successful, call EndPersist. EndPersist can be called from inside or outside of the method referenced in the callback parameter. If EndPersist is called before the persist operation completes, it blocks until the persist operation completes. If the persist operation does not complete within 30 seconds, a TimeoutException is thrown from EndPersist.

If the workflow instance was previously loaded from persistence, then the same InstanceStore used to load the workflow is used for persistence. If the workflow was created and has not yet been persisted, then an InstanceStore must be configured before calling this method or else an InvalidOperationException is thrown when this method is called.

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

.NET Framework
Available since 4.0
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