C＃中长时间运行任务的进度条

C＃中长时间运行任务的进度条

您可以

BackgroundWorker()

用来解决这类问题。

首先定义一个类的全局变量，

BackgroundWorker()

例如

private BackgroundWorker bgw;

然后在执行查询（如

button1_Click()

事件或其他任何内容）的过程中使用下面的代码。

bgw = new BackgroundWorker();bgw.WorkerReportsProgress = true;bgw.ProgressChanged += new ProgressChangedEventHandler(bgw_ProgressChanged);bgw.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bgw_RunWorkerCompleted);bgw.DoWork += new DoWorkEventHandler(bgw_DoWork);bgw.RunWorkerAsync();

现在定义如下方法：

void bgw_DoWork(object sender, DoWorkEventArgs e) {  //Your time taking work. Here it's your data query method.  CheckSsMissingDate(); }void bgw_ProgressChanged(object sender, ProgressChangedEventArgs e) {   //Progress bar.   progressBar1.Value = e.ProgressPercentage; } void bgw_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)  {   //After completing the job.   MessageBox.Show(@"Finished");  }