C# 无意间写了一段线程死锁的代码

源码如下：

        private void action_Click(object sender, RoutedEventArgs e)        {            Task t = new Task(() =>            {                for (int i = 0; i < 10; i++)                {                    Thread.Sleep(1000);                    this.Dispatcher.Invoke(() =>                            {                                lblStr.Content = i.ToString();                            });                    manualResetEvent.Set();                    Console.WriteLine(Thread.CurrentThread.ManagedThreadId);                }            });            t.Start();            t.Wait();            MessageBox.Show("123");        }

正常屏蔽掉t.Wait();时，点击按钮，界面label会显示1到9，间隔1秒，

但是加上 t.Wait();直接就卡这里了。

修改为用ManualResetEvent等待，也是一样的效果

  ManualResetEvent manualResetEvent = new ManualResetEvent(false);
        private void action_Click(object sender, RoutedEventArgs e)        {            Task t = new Task(() =>            {                for (int i = 0; i < 10; i++)                {                    Thread.Sleep(1000);                    this.Dispatcher.Invoke(() =>                            {                                lblStr.Content = i.ToString();                            });                    manualResetEvent.Set();                }            });            t.Start();            //t.Wait();            manualResetEvent.WaitOne();            MessageBox.Show("123");        }

然后在群里请教了几位大佬，大佬说是死锁了，指导用async和await去做

        private void action_Click(object sender, RoutedEventArgs e)        {            TaskTest();        }
        public async void TaskTest()        {            await Task.Run(() =>             {                 for (int i = 0; i < 10; i++)                 {                     Thread.Sleep(1000);                     this.Dispatcher.Invoke(() =>                    {                        lblStr.Content = i.ToString();                    });                 }             });            MessageBox.Show("123");        }