Windows Phone開發之 listbox分頁載入資料

        private void listbox1_MouseMove(object sender, MouseEventArgs e)        {            if (Result[0] == "1")            {                //擷取listbox的子類型ScrollViewer                            ScrollViewer scrollViewer = FindChildOfType<ScrollViewer>((ListBox)sender);                if (scrollViewer == null)                {                    throw new InvalidOperationException("erro");                }                else                {                    //判斷當前滾動的高度是否大於或者等於scrollViewer實際可滾動高度，如果等於或者大於就證明到底了                    if ((scrollViewer.VerticalOffset + 1) >= scrollViewer.ScrollableHeight)                    {                        MessageBox.Show("aaa");                    }                }            }        }        //擷取子類型                public static T FindChildOfType<T>(DependencyObject root) where T : class        {            var queue = new Queue<DependencyObject>();            queue.Enqueue(root);            while (queue.Count > 0)            {                DependencyObject current = queue.Dequeue();                for (int i = VisualTreeHelper.GetChildrenCount(current) - 1; 0 <= i; i--)                {                    var child = VisualTreeHelper.GetChild(current, i);                    var typedChild = child as T;                    if (typedChild != null)                    {                        return typedChild;                    }                    queue.Enqueue(child);                }            }            return null;        }