invoke方法操作ui线程的控件属性

列一个简单例子来说明。

WinForm：

这里必须利用delegate委托的invoke

        private void button1_Click(object sender, EventArgs e)
        {
            Thread th1 = new Thread(new ThreadStart(dod));
            th1.Start();
        }

        private delegate void myinvoke(int s);

        private void dod()
        {
            myinvoke mi = new myinvoke(dowork);
            mi.Invoke(2000);
        }

        private void dowork(int s)
        {
            int i = 0;
            while (true)
            {
                textBox1.Text = i.ToString();
                i++;
                Thread.Sleep(s);
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Control.CheckForIllegalCrossThreadCalls = false;
        }

WPF：

这里主要是Dispatcher.Invoke()的用法

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            Thread th1 = new Thread(new ThreadStart(DoWork));
            th1.Start();
        }
        
        private void DoWork()
        {
            int i = 0;
            while (true)
            {
                Dispatcher.Invoke(new Action(() =>
                {
                    textBox1.Text = i.ToString(); 
                    progressBar1.Value ++;
                }), System.Windows.Threading.DispatcherPriority.Background);
                i++;
                Thread.Sleep(500);
            }
        }