WPF路由事件之逻辑树和可视树遍历_实用技巧_

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Media; namespace WpfRouteEvent { public class WpfTreeHelper { static string GetTypeDescription(object obj) { return obj.GetType().FullName; } /// 
 /// 获取逻辑树 /// 
 ///  ///  public static TreeViewItem GetLogicTree(DependencyObject obj) { if (obj == null) { return null; } //创建逻辑树的节点 TreeViewItem treeItem = new TreeViewItem {Header=GetTypeDescription(obj),IsExpanded=true }; //循环遍历，获取逻辑树的所有子节点 foreach (var child in LogicalTreeHelper.GetChildren(obj)) { //递归调用 var item = GetLogicTree(child as DependencyObject); if (item != null) { treeItem.Items.Add(item); } } return treeItem; } /// 
 /// 获取可视树 /// 
 ///  ///  public static TreeViewItem GetVisualTree(DependencyObject obj) { if (obj == null) { return null; } TreeViewItem treeItem = new TreeViewItem { Header=GetTypeDescription(obj),IsExpanded=true}; for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++) { var child = VisualTreeHelper.GetChild(obj, i); var item = GetVisualTree(child); if (item != null) { treeItem.Items.Add(item); } } return treeItem; } } }

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; namespace WpfRouteEvent { /// 
 /// MainWindow.xaml 的交互逻辑 /// 
 public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } private void Button_Click(object sender, RoutedEventArgs e) { this.tvLogicTree.Items.Add(WpfTreeHelper.GetLogicTree(this)); this.tvVisualTree.Items.Add(WpfTreeHelper.GetVisualTree(this)); } } }