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WorkflowApplication.BeginPersist Method (AsyncCallback, Object)

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
)

Parameters

callback
Type: System.AsyncCallback
The method to be called when the persist operation has completed.
state
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(IAsyncResult). EndPersist(IAsyncResult) can be called from inside or outside of the method referenced in the callback parameter. If EndPersist(IAsyncResult) 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(IAsyncResult).

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

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.

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