WPF C#

  1. Home
  2. C#
  3. WPF
  4. Halting event routing with Handled
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Halting Events" Height="300" Width="300">
  
        MouseDown="MouseDownButton">
                  MouseDown="MouseDownGrid">
        
          
          
        
                        MouseDown="ButtonDownCanvas"
                Width="20" Height="18" VerticalAlignment="Center">
                             MouseDown="MouseDownEllipse"
                   x:Name="myEllipse"
                   Canvas.Left="1" Canvas.Top="1" Width="16" Height="16"
                   Fill="Yellow" Stroke="Black" />
                             Fill="Black" />
                             Fill="Black" />
          
        
        Click!
      
    
  

//File:Window.xaml.cs
using System;
using System.Windows;
using System.Diagnostics;
namespace WpfApplication1
{
    public partial class HaltingEvents : System.Windows.Window
    {
        public HaltingEvents()
        {
            InitializeComponent();
        }
        void ButtonDownCanvas(object sender, RoutedEventArgs e)
        {
            Debug.WriteLine("ButtonDownCanvas");
            e.Handled = true;
        }
        void PreviewMouseDownButton(object sender, RoutedEventArgs e)
        { Debug.WriteLine("PreviewMouseDownButton"); }
        void MouseDownButton(object sender, RoutedEventArgs e)
        { Debug.WriteLine("MouseDownButton"); }
        void PreviewMouseDownGrid(
          object sender, RoutedEventArgs e)
        { Debug.WriteLine("PreviewMouseDownGrid"); }
        void MouseDownGrid(object sender, RoutedEventArgs e)
        { Debug.WriteLine("MouseDownGrid"); }
        void PreviewMouseDownCanvas(object sender, RoutedEventArgs e)
        { Debug.WriteLine("PreviewMouseDownCanvas"); }
        void PreviewMouseDownEllipse(object sender, RoutedEventArgs e)
        { Debug.WriteLine("PreviewMouseDownEllipse"); }
        void MouseDownEllipse(object sender, RoutedEventArgs e)
        { Debug.WriteLine("MouseDownEllipse"); }
    }
}