WPF ScrollViewer嵌套的DataGrid、ListBox等控件的鼠标滚动事件无效，子控件拦截父控件滚动效果解决办法

注册子控件的PreviewMouseWheel，然后在滚动的时候设置控件的 IsHitTestVisible = false，因为这个参数设为false之后子控件里面的TextBox,CheckBox会失效，所以在停止滚动后要把参数设回来。代码如下

 private void girdOrder_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
        {
            RetryUtil.TimeOutAction(200, () =>
            {
                this.Dispatcher.Invoke(() =>
                {
                    this.IsHitTestVisible = false;
                });
            },
            () =>
            {
                this.Dispatcher.Invoke(() =>
                {
                    this.IsHitTestVisible = true;
                });

            });
        }

下面是TimeOutAction的代码片

/// <summary>
        /// 
        /// </summary>
        /// <param name="TS">超时等待时长ms</param>
        /// <param name="OnAction">执行任务</param>
        /// <param name="TimeAction">超时处理任务</param>
        public static void TimeOutAction(int TS, Action OnAction, Action TimeAction)
        {
            CancellationTokenSource cts = new CancellationTokenSource(TS);
            cts.Token.Register(() =>
            {//等待设置时间后执行
                TimeAction();
            });
            Task.Factory.StartNew(() =>
            {//立即执行
                while (!cts.Token.IsCancellationRequested)
                {
                    OnAction();
                    Task.Delay(TS).Wait();
                }
            }, cts.Token);
        }