This method is abstract, so it does not contain a default implementation on locking and unlocking.

While implementing a custom persistence service, if you want to implement a locking scheme you will need to override this method and provide a locking-unlocking mechanism in the SaveWorkflowInstanceState method based on the value of the unlock parameter.

The following example demonstrates an implementation of the UnlockWorkflowInstanceState method. This example is from the Custom Persistence Service sample, from the FilePersistenceService.cs file. For more information, see Custom Persistence Service Sample.

' unlock workflow instance state.  
' instance state locking is necessary when multiple runtimes share instance persistence store
Protected Overrides Sub UnlockWorkflowInstanceState(ByVal rootActivity As System.Workflow.ComponentModel.Activity)
    ' File locking is not supported in this sample
End Sub

// Unlock the workflow instance state.  
// Instance state locking is necessary when multiple runtimes share instance persistence store
protected override void UnlockWorkflowInstanceState(Activity state)
{
    //File locking is not supported in this sample
}

• Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

.NET Framework

Reference