C#backgroundWorker

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<br><br> private void button1_Click(object sender, EventArgs e)         {             backgroundWorker1.RunWorkerAsync();         }           private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)         {             for (int i = 0; i < 10; i++)             {                 Thread.Sleep(500);                 backgroundWorker1.ReportProgress(i);             }         }           private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)         {             Debug.WriteLine($"{e.ProgressPercentage}");         }           private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)         {             Debug.WriteLine($"over!");         }

　　

一定要设置

backgroundWorker1.WorkerReportsProgress = true;  ProgressChanged事件才有效

 

通常，用来显示进度条