WPF 踩坑笔记11 线程取消

 var cts = new CancellationTokenSource();
 cancellationTokenSources.Add(cts);
 var t = Task.Run(() =>
 {
       　　if (!cts.IsCancellationRequested)
           {
               //do something
           }                 
 }, cts.Token);
 cts.Token.Register(() =>
 {
     //线程终止触发
});