private void RP_NHTS_Load(object sender, EventArgs e)
{
List <SP_CHITIETPHIEUNHAPTRUSO_Result> tmp = db.SP_CHITIETPHIEUNHAPTRUSO(sophieu).ToList();
BindingSource bs = new BindingSource();
bs.DataSource = tmp;
NHTS_RP rp = new NHTS_RP();
rp.SetDataSource(bs);
crv.ReportSource = rp;
crv.RefreshReport();
}