private void ButtonRemRepo_Click(object sender, EventArgs e)
        {
            ReposConfig cnf    = ReposConfig.GetInstance();
            var         select = cnf.GetSelected();

            if (select == null)
            {
                return;                 // no selection made
            }
            string msg     = "Are you sure you wish to remove the reference to " + select.GetName() + "?";
            bool   confirm = DialogUtil.Confirm(msg);

            if (confirm)
            {
                cnf.RemoveRepoDetails(select);
                RefreshList();
            }
        }