将TreeViewItem标记传递给事件处理程序c#

本文关键字：事件处理 程序 TreeViewItem | 更新日期: 2023-09-27 18:21:04

好的，下面是我的代码，到目前为止，我正在尝试将菜单添加到自定义文件浏览器中。现在我正在制作一个新的文件夹按钮，但最终想在菜单中添加更多的项目。我的问题是如何首先将标记从项目传递到MenuMouseLeftClick事件处理程序。提前感谢你的帮助我是新的提前感谢。

using System.Windows;
using System.Windows.Controls;
using System.IO;
using System.Collections.Generic;
using System;
namespace TreeViewWithMenu
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
    public MainWindow()
    {
        //Create Objects and Handlers
        InitializeComponent();
        PopTree();
        SetMenu();
        this.treeView.MouseRightButtonDown += TreeView_MouseRightButtonDown;
        this.menu.MouseLeftButtonDown += Menu_MouseLeftButtonDown;
    }
    private void TreeView_MouseRightButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
    { 
        //Make Folder Visable
        this.menu.Visibility = Visibility.Visible;
    }
    private void SetMenu()
    {
        //Set Menu for new Folder
        MenuItem MeItem = new MenuItem();
        MeItem.Header = "New Folder";
        MeItem.Tag = "New Folder";
        menu.Items.Add(MeItem);
        menu.Visibility = Visibility.Hidden;
    }
    private void Menu_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
    {
        //Create New FOlder
        Directory.CreateDirectory("");
    }

    internal void PopTree()
    {
        //Populate Tree
        List<string> CleanDirs = new List<string>();
        string [] Dirs =  Directory.GetDirectories(Environment.GetFolderPath(Environment.SpecialFolder.Desktop));
        string temp;
        foreach (string dir in Dirs)
        { temp = SplitPath(dir); CleanDirs.Add(temp.ToUpper()); }
        foreach(var ShowIn in CleanDirs)
        {
            TreeViewItem TreeViewDirectory = new TreeViewItem();
            TreeViewDirectory.Tag = ShowIn;
            TreeViewDirectory.Header = ShowIn;
            TreeViewDirectory.Focusable = true;
            this.treeView.Items.Add(TreeViewDirectory);
        }
    }
    private string SplitPath(string path)
    {
        string[] temp = path.Split('''');
        return temp[temp.Length - 1];
    }
}

}`

将TreeViewItem标记传递给事件处理程序c#

使用SelectedItem属性访问TreeView中当前选定的项目，该项目应与您右键单击的项目相同。

private void TreeView_MouseRightButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
    if (treeView.SelectedItem == null)
        return;
    var selectedTag = ((TreeViewItem)treeView.SelectedItem).Tag;
    // do something with the tag
}

不要手动添加控件（TreeViewItem）。使用集合作为视图模型从treeView ItemsSource属性绑定到集合。使用DataTemplate将视图模型上的relavent属性绑定到TreeViewItem控件上的依赖项属性。

所有的填充都应该来自Xaml文件

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