private void Form1_Load(object sender, EventArgs e)
        {
            // 2 Gruppen mit verschiedenen Menü-Elementen erstellen
            sevSoft.OutBar.GroupItem oGroup;
 
            oGroup = outBar1.GroupItems.Add("eins", "Nachrichten");
            oGroup.MenuItems.Add("Posteingang");
            oGroup.MenuItems.Add("Postausgang");
            oGroup.MenuItems.Add("Versandt");
 
            oGroup = outBar1.GroupItems.Add("zwei", "Verschiedenes");
            oGroup.MenuItems.Add("Kalender");
            oGroup.MenuItems.Add("Termine");
            oGroup.MenuItems.Add("Einstellungen");    
 
        }

        private void outBar1_DragEnter(object sender, DragEventArgs e)
        {
            e.Effect = DragDropEffects.All;
 
        }
 
 
 
      private void outBar1_DragDrop(object sender, DragEventArgs e)
        {
            string[] files = (string[])e.Data.GetData(DataFormats.FileDrop, _
              false);
            foreach (string file in files)
            {
 
                string A = Path.GetExtension(file);
                switch (Path.GetExtension(file))
                {
 
                    case ".txt":
                        listBox1.Items.Add(file);
                        listBox1.Items.Add("");
                        break;
                }
 
            }
        }