当把Slider的IsMoveToPointEnabled设置为True之后, 鼠标点哪里Thumb就跳到哪里, 但是如果继续移动鼠标, Thumb就不会跟随鼠标动了

先添加下面的方法

private void thumb_MouseEnter(object sender, MouseEventArgs e)
{
    if (e.LeftButton == MouseButtonState.Pressed && e.MouseDevice.Captured == null)
    {
        MouseButtonEventArgs args = new MouseButtonEventArgs(e.MouseDevice, e.Timestamp, MouseButton.Left);
        args.RoutedEvent = MouseLeftButtonDownEvent;
        (sender as Thumb).RaiseEvent(args);
    }
}

窗口初始化以后执行:

Slider1.ApplyTemplate();
(Slider1.Template.FindName("PART_Track", Slider1) as Track).Thumb.MouseEnter += new MouseEventHandler(thumb_MouseEnter);

但是发现如果Slider在Popup中的话这样无效