protected void search_issue(object sender, EventArgs e)
        {
            string invoice_no = Request.Form["issue_no"];

            issue_no_search.Value = invoice_no;
            issue.DataSource      = isuline.getIssueByinvoice_no(invoice_no);
            issue.DataBind();
            //隐藏的repeater用来导出表格
            issue2.DataSource = isuline.getIssueByinvoice_no(invoice_no);
            issue2.DataBind();
        }
        protected void search_issue(object sender, EventArgs e)
        {
            string invoice_no = Request.Form["issue_no"];

            if (invoice_no == string.Empty)
            {
                PageUtil.showToast(this, "领料单号输入不能为空!");
                return;
            }
            issue.DataSource = isuline.getIssueByinvoice_no(invoice_no);
            issue.DataBind();
        }