Button PreviewMouseDown action and MouseDown action : Button Action « Windows Presentation Foundation « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Windows Presentation Foundation
3. Button Action

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="AddHandler" Height="300" Width="300">
  <Grid HorizontalAlignment="Center" VerticalAlignment="Center">
    <Button PreviewMouseDown="PreviewMouseDownButton" MouseDown="MouseDownButton">

      <Grid >
        <Grid.ColumnDefinitions>
          <ColumnDefinition />
          <ColumnDefinition />
        </Grid.ColumnDefinitions>

        <Canvas Width="20" Height="18" VerticalAlignment="Center">

          <Ellipse x:Name="myEllipse" Canvas.Left="1" Canvas.Top="1" Width="16" Height="16"
                   Fill="Yellow" Stroke="Black" />
        </Canvas>

      </Grid>
    </Button>
  </Grid>
</Window>
//File:Window.xaml.cs


using System;
using System.Windows;
using System.Diagnostics;
using System.Windows.Shapes;
using System.Windows.Input;

namespace WpfApplication1
{
    public partial class Window1 : System.Windows.Window
    {
        public Window1()
        {
            InitializeComponent();

        }
       
        void PreviewMouseDownButton(object sender, RoutedEventArgs e){ 
            Debug.WriteLine("PreviewMouseDownButton"); 
        }
 
        void MouseDownButton(object sender, RoutedEventArgs e){ 
            Debug.WriteLine("MouseDownButton"); 
        }


    }
}

24.4.Button Action
	24.4.1.	Button Click event handler
	24.4.2.	Use Button IsMouseOver Event tro Trigger an Action
	24.4.3.	implementation of button's Click event handler in Xaml
	24.4.4.	Button mouse down event
	24.4.5.	Button mouse down preview event
	24.4.6.	Button PreviewMouseDown action and MouseDown action
	24.4.7.	Button click action
	24.4.8.	Dynamically add Button to a Grid and add Action listener
	24.4.9.	Do event based on button name
	24.4.10.	Button PreviewMouseLeftButtonDown action and MouseLeftButtonDown action
	24.4.11.	Check if mouse left or right button clicked
	24.4.12.	Get mouse clicked button with MouseButtonEventArgs.ChangedButton
	24.4.13.	Adding click handler for Button
	24.4.14.	Add application command to a Button, and listen to application paste command
	24.4.15.	Button mouse enter and leave event
	24.4.16.	Button click event listener
	24.4.17.	Anonymous delegate as Button Action