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Convert RoutedEventArgs OriginalSource to event sender

<Window x: Class="WpfApplication1.Window1"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     Title="WPF" Height="200" Width="200">     <StackPanel>         <Button Click="SharedButtonClickHandler" Height="23" Margin="10"                  Name="button1" Width="75">Button One</Button>         <Button Click="SharedButtonClickHandler" Height="23" Margin="10"                  Name="button2" Width="75">Button Two</Button>         <Button Click="SharedButtonClickHandler" Height="23" Margin="10"                  Name="button3" Width="75">Button Three</Button>     </StackPanel> </Window> //File:Window.xaml.vb Imports System.Windows Imports System.Windows.Controls Namespace WpfApplication1   Public Partial Class Window1     Inherits Window     Public Sub New()       InitializeComponent()     End Sub     Private Sub SharedButtonClickHandler(sender As Object, e As RoutedEventArgs)       Dim source As Button = TryCast(e.OriginalSource, Button)       If source IsNot Nothing Then         MessageBox.Show("You pressed " & source.Name, Title)       End If     End Sub   End Class End Namespace