private void cmdFiles_Click(object sender, EventArgs e)
        {
            List <string> files = BrowseDialoges.BrowseFiles();

            if (files != null)
            {
                SetOrAdd(txtFiles, ListConverter.ListToString(files));
            }
        }
        private void cmdBrowseFolders_Click(object sender, EventArgs e)
        {
            List <string> folders = BrowseDialoges.BrowseFolders();

            if (folders != null)
            {
                SetOrAdd(txtFolders, ListConverter.ListToString(folders));
            }
        }