MS Form

GUIs.Test.ZUGFeRDTest/Form1.vb

@@ -117,6 +117,7 @@ Public Class Form1
 
     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,