Private Sub Button1_Click(sender As Object, e As EventArgs) Handles _
  Button1.Click
        If OpenFileDialog1.ShowDialog() = System.Windows.Forms.DialogResult.OK _
        Then
            pfad = OpenFileDialog1.FileName
            TextBox1.Text = String.Empty
            Try
                TextBox1.Text = File.ReadAllText(pfad)
            Catch
 
            End Try
            Me.Text = pfad
 
        End If
    End Sub