Imports System.Text.RegularExpressions
Public Class Form1
  Inherits System.Windows.Forms.Form

Vom Windows Form Designer generierter Code

  Private Sub Form1_Load(ByVal sender As System.Object, _
          ByVal e As System.EventArgs) Handles MyBase.Load
    TextBox1.Text = "<h1>Hallo Leute!</h1>" & vbNewLine & _
        "Ich bin eine <b>genialer</b> Typ, oder?" & vbNewLine & _
        "<a href='www.blablabla.de'>Bitte kommt auf meine " & _
        "tolle Website!</a>"
  End Sub

  Private Sub Button1_Click(ByVal sender As System.Object, _
          ByVal e As System.EventArgs) Handles Button1.Click
    Dim s As String = Regex.Replace(TextBox1.Text, "<.*?>", _
          String.Empty, RegexOptions.Singleline)
    TextBox2.Text = s
  End Sub

  Private Sub Button2_Click(ByVal sender As System.Object, _
          ByVal e As System.EventArgs) Handles Button2.Click
    Me.Close()
  End Sub
End Class