使用线程操作刷新Winform界面

public FrmMain()
        {
            InitializeComponent();
            System.Threading.Thread thread = new System.Threading.Thread(Do_work);
                thread.IsBackground = true;
                thread.Start();
        }


 private void Do_work()
        {
            while (true)
            {
                //将sleep和无限循环放在等待异步的外面 
                System.Threading.Thread.Sleep(5000);
                System.Windows.Forms.Application.DoEvents();
                ThreadFuntion();
            }

        }

 private void ThreadFuntion()
        {
            if (this.label_State.InvokeRequired)
            {
                //1 通常方法：将代理绑定到方法  
                FlushClient fc = new FlushClient(ThreadFuntion);
                this.BeginInvoke(fc);//通过代理调用刷新方法  
            }
            else
            {
                label_State.Text = "程序已经运行5秒钟了";
            }
        }