跨线程调用控件之MethodInvoker

private void button1_Click(object sender, EventArgs e)
{
// 创建一个新线程。
Thread thread = new Thread(new ThreadStart(myname));
thread.IsBackground = true;
thread.Start();
}
private void myname()
{
MethodInvoker mi = new MethodInvoker(hello);
//创建一个委托，hello是该委托所托管的代码，必须是声明为void的。
Invoke(mi);//同步执行委托。
//BeginInvoke(mi);异步执行委托。
}
private void hello()
{
label1.Text = "我是跨线程的！";
}

private Thread myThread;
private void Form1_Load(object sender, EventArgs e)
{
myThread = new Thread(new ThreadStart(RunsOnWorkerThread));
myThread.Start();
}
private void RunsOnWorkerThread()
{
//DoSomethingSlow();
string pList = "myThread线程调用UI控件";
label1.BeginInvoke(new System.EventHandler(UpdateUI), pList);
}
//直接用System.EventHandler,没有必要自定义委托
private void UpdateUI(object o, System.EventArgs e)
{
//UI线程设置label1属性
label1.Text = o.ToString() + "成功!";
}