为什么在workflowapplication运行调用后使用Thread.Sleep [英] Why to use Thread.Sleep after workflowapplication run call

问题描述

嗨



我正在使用WorkflowApplication在WF.Invoking工作流程中使用statemachine。



after通过instance.Run（）方法创建实例并调用工作流。



然后我调用instance.unload（）。当运行方法调用相应的codeActivity时，我执行的地方正在创建书签。



但工作流程意外中止并转向执行状态。



当我保持Thread.Sleep（新TimeSpan（0,0,5））然后它正在工作。



我的代码是这样的

 WorkflowApplication instance =  new  WorkFLowApplication（）;  //  仅示例代码 
 
 instance.store = somestorename; 
 instance.complete + =  event ; 
 instance.run（）; 
 Thread.Sleep（ new  TimeSpan（ 0 ， 0 ， 5 ））
 instance.unload（）; 

只保持Thread.Sleep（新的TimeSpan（0,0,5））正常工作。即使用一些业务逻辑执行代码活动并创建书签。



但我认为使用Thread.Sleep是不正确的设计方式。



即使我尝试使用SynchroniseContext将workflowapplication设置为同步。



但没有成功...



请帮忙解决这个

解决方案

我会使用 AutoResetEvent 和 WaitOne 等待主机应用程序，直到工作流程完成。示例代码 [ ^ ]：

< pre lang =c＃> AutoResetEvent syncEvent = new AutoResetEvent（ false ）;

活动wf = new WriteLine
{
Text = Hello World。
};

// 使用所需的
// 工作流程定义。
WorkflowApplication wfApp = new WorkflowApplication（wf）;

// 处理所需的生命周期事件。
wfApp。已完成= 委托（WorkflowApplicationCompletedEventArgs e）
{
syncEvent.Set（）;
};

// 启动工作流程。
wfApp.Run（ ）;

// 等待已完成到达并发出信号
// 工作流程已完成。
syncEvent.WaitOne（）;

Hi

I am working on statemachine in WF.Invoking workflow using WorkflowApplication.

after creating instance and calling workflow by instance.Run() method.

Then instance.unload() i am calling.When run method called respective codeActivity is getting executed where i am creating the bookmarks.

But workflow aborts unexpectingly and moving to executing status.

when i keep Thread.Sleep(new TimeSpan(0,0,5)) then it is working.

My code is like this

WorkflowApplication instance = new WorkFLowApplication();// sample code only

instance.store = somestorename;
instance.complete += event;
instance.run();
Thread.Sleep(new TimeSpan(0,0,5))
instance.unload();

only by keeping Thread.Sleep(new TimeSpan(0,0,5)) its working properly. i.e. executing codeactivities with some business logic and creating bookmarks.

But i think using Thread.Sleep is not correct way of design.

Even i tried with making workflowapplication as synchronous by using SynchroniseContext.

but no success...

Please help on this

解决方案

I would use AutoResetEvent and WaitOne to wait host application until workflow complete. sample code[^]:

AutoResetEvent syncEvent = new AutoResetEvent(false);

Activity wf = new WriteLine
{
    Text = "Hello World."
};

// Create the WorkflowApplication using the desired
// workflow definition.
WorkflowApplication wfApp = new WorkflowApplication(wf);

// Handle the desired lifecycle events.
wfApp.Completed = delegate(WorkflowApplicationCompletedEventArgs e)
{
    syncEvent.Set();
};

// Start the workflow.
wfApp.Run();

// Wait for Completed to arrive and signal that
// the workflow is complete.
syncEvent.WaitOne();

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