c# 异步更新UI 不阻塞

c# 异步更新UI 不阻塞  流畅

 Task task = Task.Factory.StartNew(() =>
 {
     DoLongRunningWork(); // 耗时运算
 });

Task UITask= task.ContinueWith(() =>
     {
      this.TextBlock1.Text = "Complete"; //运算后 赋值
     }, TaskScheduler.FromCurrentSynchronizationContext());



 

btnStop.Invoke(new Action(delegate() { this.btnStop.Enabled = false; }));
btnStart.Invoke(new Action(delegate() { this.btnStart.Enabled = true; }));