getDirectories_re

        private void RetrieveAllFiles(DirectoryInfo parentDirectoryInfo)
        {
            foreach (DirectoryInfo directoryInfo in parentDirectoryInfo.GetDirectories())
            {
                try
                {
                    if (directoryInfo.GetDirectories().Length > 0)
                        RetrieveAllFiles(directoryInfo);
                }
                catch (Exception e)
                {
                    MessageBox.Show("Kann gewählten Ordner nicht lesen.");
                }

                try
                {
                    foreach (var fileInfo in directoryInfo.GetFiles())
                        LB_FULL.Items.Add(fileInfo.FullName);
                }
                catch (Exception e)
                {
                    MessageBox.Show("Kann gewählte Datein nicht lesen.");
                }
            }
        }

        private void Step2_Load(object sender, EventArgs e)
        {
            RetrieveAllFiles(new DirectoryInfo(@PathClient));
            if (!CheckFreeSpace())
            {
                MessageBox.Show("Nicht genügend Speicherplatz zum erstellen der Updates.");
            }
        }

        private void Step2_FormClosed(object sender, FormClosedEventArgs e)
        {
            Application.Exit();
        }

        private void ToRight_Click(object sender, EventArgs e)
        {
            ArrayList sel = new ArrayList(LB_FULL.SelectedItems);
            foreach (Object SelectedItem in sel)
            {
                if (!LB_CRITICAL.Items.Contains(SelectedItem))
                    LB_CRITICAL.Items.Add(SelectedItem);
            }
        }