private void RP_DX_Load(object sender, EventArgs e)
{
List <SP_CHITIETPHIEUDEXUAT_Result> tmp = db.SP_CHITIETPHIEUDEXUAT(soPhieu).ToList();
BindingSource bs = new BindingSource();
bs.DataSource = tmp;
DX_RP rp = new DX_RP();
rp.SetDataSource(bs);
crv.ReportSource = rp;
crv.RefreshReport();
}