private void SearchCuocGoi() { string soDt = txtSearchPhone.Text.Trim(); string diaChi = txtSearchAddress.Text.Trim(); string xeNhan = txtXeNhan.Text.Trim(); string kenh = ""; if (CbkSearchKenh1.Checked) { kenh = "1;"; } if (CbkSearchKenh2.Checked) { kenh = kenh + "2;"; } if (CbkSearchKenh3.Checked) { kenh = kenh + "3;"; } if (CbkSearchKenh4.Checked) { kenh = kenh + "4"; } grdTimKiemCuocGoi.DataSource = CuocGoi.DIENTHOAI_LayAllCuocGoiChuaGiaiQuyet_V2(kenh, soDt, diaChi, xeNhan); }