跨线程调用Windows窗体控件

delegate void SetTextCallback(string text);
private void SetText(string text)
{
// InvokeRequired required compares the thread ID of the
// calling thread to the thread ID of the creating thread.
// If these threads are different, it returns true.
if (this.stbsuccess.InvokeRequired)
{
SetTextCallback d = new SetTextCallback(SetText);
this.Invoke(d, new object[] { text });
}
else
{
this.stbsuccess.Text = text;
}
}

Thread newThread = new Thread(new ThreadStart(threadName)); //创建线程
threadName.Start();

private BackgroundWorker backgroundWorker1;
this.backgroundWorker1 = new System.ComponentModel.BackgroundWorker();
this.backgroundWorker1.RunWorkerCompleted += new System.ComponentModel.RunWorkerCompletedEventHandler(this.backgroundWorker1_RunWorkerCompleted);
private void setTextBackgroundWorkerBtn_Click(object sender,EventArgs e)
{
this.backgroundWorker1.RunWorkerAsync();
}