请考虑以下代码:
private static BackgroundWorker bg = new BackgroundWorker(); static void Main(string[] args) { bg.DoWork += bg_DoWork; bg.ProgressChanged += bg_ProgressChanged; bg.WorkerReportsProgress = true; bg.RunWorkerAsync(); Thread.Sleep(10000); } static void bg_ProgressChanged(object sender,ProgressChangedEventArgs e) { Console.WriteLine(e.Progresspercentage); Thread.Sleep(100); Console.WriteLine(e.Progresspercentage); } static void bg_DoWork(object sender,DoWorkEventArgs e) { for (int i = 0; i < 10; i++) { bg.ReportProgress(i); } }
运行时,我得到以下输出:
0
1
1
2
0
3
2
3
5
4
4
6
5
7
7
8
6
9
8
9
我知道问题是BackgroundWorker为每次调用ReportProgress启动的线程之间的竞争条件.
如何确保每个bg_ProgressChanged的整个主体按照我调用它们的顺序执行?
那是我想得到的
0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9
结果是.