如何讓MouseLeftButtonDown在TreeViewItem上工作，就像它在TextBlock上工作一樣？

如何將點擊事件附加到TreeViewItem上？如何讓MouseLeftButtonDown在TreeViewItem上工作，就像它在TextBlock上工作一樣？

爲TextBlock的，但不是樹型視圖以下工作：

XAML：

<Window x:Class="TestClickTree2343.Window1" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    Title="Window1" Height="300" Width="300"> 
    <Window.Resources> 
     <Style TargetType="TreeViewItem"> 
      <Setter Property="IsExpanded" Value="True" /> 
     </Style> 
    </Window.Resources> 

    <StackPanel> 
     <TextBlock Text="Click this" MouseLeftButtonDown="TextBlock_MouseLeftButtonDown"/> 
     <TreeViewItem Header="Files"> 
      <TreeViewItem Header="File 1"> 
       <TreeViewItem Header="Part 1"> 
        <TreeViewItem Header="Paragraph 1" MouseLeftButtonDown="TreeViewItem_MouseLeftButtonDown"/> 
        <TreeViewItem Header="Paragraph 2"/> 
       </TreeViewItem> 
      </TreeViewItem> 
     </TreeViewItem> 
    </StackPanel> 
</Window>

代碼隱藏：

using System.Windows; 
using System.Windows.Input; 

namespace TestClickTree2343 
{ 
    public partial class Window1 : Window 
    { 
     public Window1() 
     { 
      InitializeComponent(); 
     } 

     private void TreeViewItem_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) 
     { 
      MessageBox.Show("treeview item was clicked, this does NOT work"); 
     } 

     private void TextBlock_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) 
     { 
      MessageBox.Show("textblock item was clicked, this WORKS"); 
     } 
    } 
}

來源

2009-10-14 Edward Tanguay

雖然不是一個正確的答案，把樹型視圖內部的文本塊（如通過模板），也允許使用樹型視圖內MouseLeftButtonDown事件的。 – 2011-02-24 00:56:12