uwp 内部控件获取模板的绑定对象数据

例如ListView绑定List<VideoModel>,每一个Item的绑定VideoModel,

那么每个ListViewItem模板中有一个button,

通过这个button获得当前item的绑定对象VideoModel的实例:

private async void DeleteInternetSourceButton_Click(object sender, RoutedEventArgs e)
{
   var button = e.OriginalSource as Button;
   VideoModel vm = button.DataContext as VideoModel;
   //...
 }