C# 在多线程内控制winform控件

        private delegate void FlushClient(); //委托

        private void Form1_Load(object sender, EventArgs e)
        {
            Thread thread = new Thread(ThreadFunction); //创建一个线程　　
            thread.IsBackground = true;
            thread.Start();
        }


        private void ThreadFunction()
        {
            while (true)
            {
                FlushClient fc = new FlushClient(CrossThreadFlush); //使用委托
                this.BeginInvoke(fc);
                Thread.Sleep(1000);
            }
        }

        private void CrossThreadFlush()
        {
            label1.Text = (DateTime.Now.ToString() + "\n");
            Thread.Sleep(1000);
        }