public virtual CrystalDecisions.CrystalReports.Engine.ReportDocument CreateReport()
        {
            Nhanvienreport rpt = new Nhanvienreport();

            rpt.Site = this.Site;
            return(rpt);
        }
        private void btnDanhsachNhanvien_Click(object sender, EventArgs e)
        {
            NhanvienBUL cls = new NhanvienBUL();

            Report.frmBaoBieu.dt = cls.DanhsachNhanvien();
            Nhanvienreport obj = new Nhanvienreport();

            obj.SetDataSource(dt);
            crystalReportViewer1.ReportSource = obj;
            crystalReportViewer1.Refresh();
        }