C# 多线程 CancellationTokenSource简单应用示例

CancellationTokenSource cts = new CancellationTokenSource();
        private async void Button_Click_2(object sender, RoutedEventArgs e)
        {
            Task<string> t1 = Task.Run(StartFUUpdateCommandFun, cts.Token);

            await Task.WhenAll(t1);

            if (!t1.Result.Equals("Success!"))
            {
                throw new Exception(t1.Result);
            }
        }

        private string StartFUUpdateCommandFun()
        {
            try
            {
                while (true)
                {
                    cts.Token.ThrowIfCancellationRequested();
                }
            }
            catch (OperationCanceledException)
            {
                cts = new CancellationTokenSource();
                return "停止！";
            }


        }

        private void Button_Click_3(object sender, RoutedEventArgs e)
        {
            cts.Cancel();
        }