private void RP_NHCN_Load(object sender, EventArgs e)
{
List <SP_CHITIETPHIEUNHAPCHINHANH_Result> tmp = db.SP_CHITIETPHIEUNHAPCHINHANH(sophieu).ToList();
BindingSource bs = new BindingSource();
bs.DataSource = tmp;
NHCN_RP rp = new NHCN_RP();
rp.SetDataSource(bs);
crv.ReportSource = rp;
crv.RefreshReport();
}