WPF VB.Net

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF " Height="300" Width="300">
    
        
                         IsReadOnly="True" VerticalScrollBarVisibility="Visible"/>
    

//File:Window.xaml.vb
Imports System
Imports System.Windows
Imports System.Windows.Input
Namespace WpfApplication1
  Public Partial Class Window1
    Inherits Window
    Public Sub New()
      InitializeComponent()
    End Sub
    Private Sub TextBox_TextEvent(sender As Object, e As TextCompositionEventArgs)
      Dim msg As [String] = [String].Format("{0} - {1}" & vbLf, e.RoutedEvent.Name, e.Text)
      txtLog.Text += msg
      txtLog.ScrollToEnd()
    End Sub
  End Class
End Namespace