后台工作者线程有疑问吗?

问题描述

一旦我启动RunWorkerAsync()方法，我就会使用循环将消息发送到UI.这是循环:

Once I fire the RunWorkerAsync() method, I use a loop to send message to the UI. Here is the loop:

                int i = 0;
                string msg = "Processing";
                while (_workerThreadDone == false)
                {
                    if (i > 100)
                    {
                        i = 0;
                        msg = "Processing";
                    }

                    msg += " .";
                    System.Threading.Thread.Sleep(500);
                    StatusBarVM.Instance.Text1 = msg;
                    StatusBarVM.Instance.Progress = i++;
                    System.Windows.Forms.Application.DoEvents();
                }

在WorkerCompleted事件中，变量_workerThreadDone设置为true.这种逻辑工作正常.

The variable _workerThreadDone is set to true in WorkerCompleted event. This logic works fine.

但是，在退出我的循环之前，不会触发也会更新MainWindow的ProgressChanged事件.我猜这是因为我的循环阻止了它.所以我需要允许这个ProgressChanged甚至在我的循环循环时被触发 -我该怎么做?

However, the ProgressChanged event which also updates the MainWindow doe not get fired until my loop has exited. I guess, this is because my loop is holding it back. So i need to allow this ProgressChanged even to be fired while my loop is looping - How do I do this?

谢谢.

推荐答案

在循环中添加以下行.

谢谢

Rajnikant

Rajnikant

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