WorkflowPersistenceService.UnlockWorkflowInstanceState(Activity) 方法

定义

命名空间:

System.Workflow.Runtime.Hosting

程序集:

System.Workflow.Runtime.dll

在派生类中重写时，解除对工作流实例状态的锁定。

protected public:
 abstract void UnlockWorkflowInstanceState(System::Workflow::ComponentModel::Activity ^ rootActivity);

protected internal abstract void UnlockWorkflowInstanceState (System.Workflow.ComponentModel.Activity rootActivity);

abstract member UnlockWorkflowInstanceState : System.Workflow.ComponentModel.Activity -> unit

Protected Friend MustOverride Sub UnlockWorkflowInstanceState (rootActivity As Activity)

参数

rootActivity

Activity

工作流实例的根活动。

示例

下面的示例演示 UnlockWorkflowInstanceState 方法的实现。 此示例摘自 FilePersistenceService.cs 文件中的“自定义持久性服务”示例。 有关详细信息，请参阅 自定义持久性服务示例。

// 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
}

' 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

注解

此方法是抽象的，因此它不包含对锁定和解锁的默认实现。

实现自定义持久性服务时，如果要实现锁定方案，则需要重写此方法，并在 SaveWorkflowInstanceState 方法中提供根据解锁参数的值进行锁定-解锁的机制。