private void 新增ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            frm_Vip_Add fva1 = new frm_Vip_Add();

            if (fva1.ShowDialog() == System.Windows.Forms.DialogResult.Yes)
            {
                frm_VIP_Display_Load(null, null);
            }
        }
        /// <summary>
        /// 会员管理子系统。包含新增会员、修改会员、删除会员、查看会员列表;
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void 新增会员ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            frm_Vip_Add fva1 = new frm_Vip_Add();

            fva1.ShowDialog();
        }