您需要一次声明和配置BackgroundWorker-然后在循环中调用RunWorkerAsync方法。
public class UpdateController{ private UserController _userController; private BackgroundWorker _backgroundWorker; public UpdateController(LoginController loginController, UserController userController) { _userController = userController; loginController.LoginEvent += Update; _backgroundWorker = new BackgroundWorker(); _backgroundWorker.DoWork += new DoWorkEventHandler(backgroundWorker_DoWork); _backgroundWorker.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker_ProgressChanged); _backgroundWorker.WorkerReportsProgress= true; } public void Update() { _backgroundWorker.RunWorkerAsync(); } public void backgroundWorker_DoWork(object sender, DoWorkEventArgs e) { while (true) { // Do the long-duration work here, and optionally // send the update back to the UI thread... int p = 0;// set your progress if appropriate object param = "something"; // use this to pass any additional parameter back to the UI _backgroundWorker.ReportProgress(p, param); } } // This event handler updates the UI private void backgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e) { // Update the UI here// _userController.UpdateUsersonMap(); }}
