private void btnXemTatCa_Click(object sender, EventArgs e)
{
IList <LopInfo> lop = LopCtrl.LayDsLop();
IList <ReportParameter> param = new List <ReportParameter>();
QuyDinhInfo m_ThongTinTruong = QuyDinh.LayThongTinTruong();
param.Add(new ReportParameter("TenTruong", m_ThongTinTruong.TenTruong));
param.Add(new ReportParameter("DiaChiTruong", m_ThongTinTruong.DiaChiTruong));
param.Add(new ReportParameter("NgayLap", DateTime.Today.Day + "/" + DateTime.Today.Month + "/" + DateTime.Today.Year));
param.Add(new ReportParameter("NamHoc", "Tất cả"));
this.reportViewerDSLop.LocalReport.SetParameters(param);
this.bSDSLop.DataSource = lop;
this.reportViewerDSLop.RefreshReport();
}