protected void BtnDelete_Click(object sender, EventArgs e)
        {
            StringBuilder selectList = new StringBuilder("");

            selectList = this.GdvPaymentLogList.SelectList;
            if (selectList.Length == 0)
            {
                AdminPage.WriteErrMsg("<li>对不起,您还没选择要删除的支付记录!</li>", "PaymentLogManage.aspx");
            }
            else if (PaymentLog.Delete(selectList.ToString()))
            {
                BasePage.ResponseRedirect("PaymentLogManage.aspx");
            }
            else
            {
                AdminPage.WriteErrMsg("<li>删除失败!!</li>", "PaymentLogManage.aspx");
            }
        }
        protected void BtnBatchDelete_Click(object sender, EventArgs e)
        {
            DateTime now = DateTime.Now;

            switch (this.RadlDatepartType.SelectedValue)
            {
            case "0":
                now = DateTime.Now.AddDays(-10.0);
                break;

            case "1":
                now = DateTime.Now.AddMonths(-1);
                break;

            case "2":
                now = DateTime.Now.AddMonths(-2);
                break;

            case "3":
                now = DateTime.Now.AddMonths(-3);
                break;

            case "4":
                now = DateTime.Now.AddMonths(-6);
                break;

            case "5":
                now = DateTime.Now.AddYears(-1);
                break;
            }
            if (PaymentLog.Delete(now))
            {
                AdminPage.WriteSuccessMsg("批量删除记录成功!", "PaymentLogManage.aspx");
            }
            else
            {
                AdminPage.WriteErrMsg("<li>已经没有要删除的支付记录!</li>");
            }
        }