<StackPanel
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Class="WpfApplication1.RoutedEventSource">
<StackPanel.Resources>
<Style TargetType ="{x:Type Button}">
<Setter Property="Height" Value="30"/>
<Setter Property="Width" Value="100"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
</Style>
</StackPanel.Resources>
<Button Click="HandleClick">Button 1</Button>
<Button Click="HandleClick">Button 2</Button>
<Button Click="HandleClick">Button 3</Button>
</StackPanel>
//File:Window.xaml.vb
Imports System.Windows
Imports System.Windows.Controls
Namespace WpfApplication1
Public Partial Class RoutedEventSource
Private Sub HandleClick(sender As Object, e As RoutedEventArgs)
Dim srcButton As Button = TryCast(e.Source, Button)
srcButton.Width = 200
End Sub
End Class
End Namespace
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