public void BindInBillMaster()
    {
        masterdt = inbill.GetInBillMaster(pageIndex, pageSize);
        if (masterdt.Rows.Count == 0)
        {
            masterdt.Rows.Add(masterdt.NewRow());
            gvMaster.DataSource = masterdt;
            gvMaster.DataBind();
            int columnCount = gvMaster.Rows[0].Cells.Count;
            gvMaster.Rows[0].Cells.Clear();
            gvMaster.Rows[0].Cells.Add(new TableCell());
            gvMaster.Rows[0].Cells[0].ColumnSpan = columnCount;
            gvMaster.Rows[0].Cells[0].Text       = "暂时无未下载数据数据";
            gvMaster.Rows[0].Visible             = true;
        }
        else
        {
            if (!IsPostBack)
            {
                //this.LoadBill(masterdt.Rows[0]["BILLNO"].ToString());
                this.lblBillNo.Text = masterdt.Rows[0]["BILLNO"].ToString();
            }
            this.lblBillNo.Text = masterdt.Rows[0]["BILLNO"].ToString();
            gvMaster.DataSource = masterdt;
            gvMaster.DataBind();
        }

        ViewState["pageIndex"]     = pageIndex;
        ViewState["totalCount"]    = totalCount;
        ViewState["pageCount"]     = pageCount;
        ViewState["filter"]        = filter;
        ViewState["OrderByFields"] = OrderByFields;
        ViewState["pageIndex2"]    = pageIndex2;
        BindInBillDetail();
    }