1.首先添加两个三个控件
2. 设置backgroundWorker1的属性WorkerReportsProgress属性为True
3.BackgroundWorker控件允许在一个独立的专属的进程上面执行一些操作。尤其是一些消耗时间资源比较大的事件。
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
for (int i = 1; i <= 10; i++)
{
// Perform a time consuming operation and report progress.
System.Threading.Thread.Sleep(5000);
backgroundWorker1.ReportProgress(i);
}
}
private void button1_Click(object sender, EventArgs e)
{
backgroundWorker1.RunWorkerAsync(); //执行RunWorkerAsync()会调用DoWork()
}
private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
progressBar1.Value = e.ProgressPercentage*10;
}
private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
MessageBox.Show("backgroundWorker Completed!");
}
4.效果如下: