在Windows Phone上获取ScrollViewer的滚动事件

<ScrollViewer x:Name="myScrollViewer">
    <!-- 添加其他控件 -->
</ScrollViewer>

using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;

// ...

// 在合适的地方获取ScrollViewer控件
ScrollViewer scrollViewer = FindScrollViewer(myScrollViewer);

// 订阅滚动事件
scrollViewer.ScrollChanged += ScrollViewer_ScrollChanged;

// 找到ScrollViewer控件的方法
private ScrollViewer FindScrollViewer(DependencyObject parent)
{
    var childCount = VisualTreeHelper.GetChildrenCount(parent);
    for (int i = 0; i < childCount; i++)
    {
        var child = VisualTreeHelper.GetChild(parent, i);
        if (child is ScrollViewer)
        {
            return (ScrollViewer)child;
        }
        else
        {
            var result = FindScrollViewer(child);
            if (result != null)
                return result;
        }
    }
    return null;
}

// 滚动事件处理方法
private void ScrollViewer_ScrollChanged(object sender, ScrollChangedEventArgs e)
{
    // 处理滚动事件
    // 可以通过e.VerticalOffset和e.HorizontalOffset获取滚动的偏移量
}