silverlight 清空所有文本框

public MainPage() { InitializeComponent(); } private void button1_Click(object sender,RoutedEventArgs e) { Clear(this.LayoutRoot); } private void Clear(DependencyObject element) { // If this is a text <a href="/tag/Box/" target="_blank" class="keywords">Box</a>,clear the text. Text<a href="/tag/Box/" target="_blank" class="keywords">Box</a> txt = element as Text<a href="/tag/Box/" target="_blank" class="keywords">Box</a>; if (txt != null) txt.Text = ""; // Check for <a href="/tag/nes/" target="_blank" class="keywords">nes</a>ted children. int children = VisualTreeHelper.GetChildrenCount(element); for (int i = 0; i < children; i++) { DependencyObject child = VisualTreeHelper.GetChild(element,i); Clear(child); } } 

 

这里面最重要的是VisualTreeHelper类，可以使用它遍历页面元素,它有一些重要方法

如GetParent()，得到父元素。GetChildrenCount()得到子元素数量