当构建一个图形化的Windows Form桌面应用程序并且需要执行在应用程序主UI线程之外的线程中长时间的任务时，BackgroundWorker类就很有用了。

要使用BackgroundWorker，我们只需要告诉它希望在后台执行那个方法并且调用RunWorkerAsync（）即可

public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { int a = int.Parse(textBox1.Text.Trim()); int b = int.Parse(textBox2.Text.Trim()); Add ad = new Add(a,b); backgroundWorker1.RunWorkerAsync(ad); } private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) { Add args=(Add)e.Argument; for (int i = 0; i < 11; i++) { Thread.Sleep(200); backgroundWorker1.ReportProgress(i*10); } e.Result = args.a + args.b; } private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { label1.Text = e.Result.ToString(); } private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e) { progressBar1.Value = e.ProgressPercentage; } } public class Add { public int a; public int b; public Add(int a, int b) { this.a = a; this.b = b; } }

以上就是c# BackgroundWorker组件的作用的详细内容，更多关于c# BackgroundWorker组件的资料请关注其它相关文章！