Merge branch 'master' of http://git.dd:3000/AppStd/Monorepo

GUIs.Test.ZUGFeRDTest/Form1.vb

@@ -116,6 +116,8 @@ Public Class Form1
     End Sub
 
     Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
+        ListBox1.Text = ""
+        ListBox1.Items.Clear()
         Dim oDialogResult = OpenFileDialog1.ShowDialog()
         Dim oArgs As New WorkerArgs() With {
             .AllowFacturX = False,