private void toolStripItem_Click(object sender, EventArgs e)
        {
            //数据库操作
            ToolStripItem toolStripItem = (ToolStripItem)sender;

            AllDisabel();
            ToolStripButton toolStripButton = (ToolStripButton)sender;

            toolStripButton.ForeColor = Color.Black;
            toolStripButton.BackColor = Color.White;
            if (sender.ToString() != "添加优惠")
            {
                strtoolStrip = sender.ToString();
                itoolStrip   = toolStripItem.Name;
                bindData(sender.ToString());
            }
            else
            {
                Models.dd_coupons _Coupons = null;
                toolStrip1.Items[itoolStrip].BackColor = Color.White;
                toolStrip1.Items[itoolStrip].ForeColor = Color.Black;
                MyForm.ActivityManagement.ActivityManageDeatilForm deatilForm = new MyForm.ActivityManagement.ActivityManageDeatilForm(_Coupons);
                deatilForm.StartPosition = FormStartPosition.CenterScreen;
                deatilForm.ShowDialog();
                RefreshGrid();
            }
        }
        private void contextButton1_click(object send, ContextItemClickEventArgs e)
        {
            int couponid = Convert.ToInt32(e.Item.Tag);

            MyForm.ActivityManagement.ActivityManageDeatilForm deatilForm = new MyForm.ActivityManagement.ActivityManageDeatilForm(list.Find(s => s.couponid == couponid));
            deatilForm.StartPosition = FormStartPosition.CenterScreen;
            deatilForm.ShowDialog();
            RefreshGrid();
        }