Use Mouse.AddPreviewMouseDownHandler(myEllipse, PreviewMouseDownEllipse);

    

<Window x:Class="WpfApplication1.AttachedEvents"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Event Examples" Height="300" Width="300">
  <Grid HorizontalAlignment="Center" VerticalAlignment="Center">
    <Button>
      <Grid>
        <Grid.ColumnDefinitions>
          <ColumnDefinition />
          <ColumnDefinition />
        </Grid.ColumnDefinitions>

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

          <Ellipse Canvas.Left="4.5" Canvas.Top="5" Width="2.5" Height="3" Fill="Black" />
          <Ellipse Canvas.Left="11" Canvas.Top="5" Width="2.5" Height="3" Fill="Black" />
          <Path Data="M 5,10 A 3,3 0 0 0 13,10" Stroke="Black" />
      
        <TextBlock Grid.Column="1">Click!</TextBlock>
      </Grid>
    </Button>
  </Grid>
</Window>

//File:Window.xaml.vb

Imports System
Imports System.Windows
Imports System.Diagnostics
Imports System.Windows.Shapes
Imports System.Windows.Input

Namespace WpfApplication1
  Public Partial Class AttachedEvents
    Inherits System.Windows.Window

    Public Sub New()
      InitializeComponent()

      Mouse.AddPreviewMouseDownHandler(myEllipse, AddressOf PreviewMouseDownEllipse)

      Mouse.AddMouseDownHandler(myEllipse, AddressOf MouseDownEllipse)
    End Sub

    Private Sub PreviewMouseDownEllipse(sender As Object, e As RoutedEventArgs)
      Debug.WriteLine("PreviewMouseDownEllipse")
    End Sub

    Private Sub MouseDownEllipse(sender As Object, e As RoutedEventArgs)
      Debug.WriteLine("MouseDownEllipse")
    End Sub

  End Class
End Namespace

Related examples in the same category

1.	MouseDown action on Line
2.	Hit Result Behavior
3.	Button PreviewMouseLeftButtonDown action and MouseLeftButtonDown action
4.	Grid MouseLeftButtonDown action and PreviewMouseLeftButtonDown action
5.	Detect whether the mouse button is pressed or released using the MouseButtonState property.
6.	Handler MouseLeftButtonDown and MouseLeftButtonUp events
7.	Make an object follow the mouse pointer as it moves on the screen.
8.	Use Mouse.AddMouseDownHandler(myEllipse, MouseDownEllipse);
9.	Use Mouse.PreviewMouseDown /Mouse.MouseDown Attribute from Grid element
10.	A line which monitors the mouse entering its area
11.	Mouse Position and TranslateTransform
12.	Mouse Position
13.	Get mouse position with Mouse.GetPosition
14.	Replease mouse with Mouse.Capture(null)
15.	Retrieving the mouse position relative to controls on a Window
16.	Mouse cursor override and clear
17.	Check the mouse event source
18.	Use the Mouse Wheel action methods that are defined by the IScrollInfo interface
19.	Change control background in mouse enter and leave
20.	Use EventSetter to add mouse event handler
21.	Mouse.LostMouseCaptureEvent
22.	Use Mouse.Capture to let a Control capture an event
23.	Point Hit Test

Use Mouse.AddPreviewMouseDownHandler(myEllipse, PreviewMouseDownEllipse); : Mouse « Windows Presentation Foundation « VB.Net

Related examples in the same category