public void BindChuong() { if (ddlLoaiCa.SelectedValue == "0") { grvDanhSach.Visible = false; } else { grvDanhSach.Visible = true; decimal KhoiLuong = 0; int SoLuongCa = 0; int SoLuongTT = 0; string NguoiChoAn = ""; DateTime NgayAn = DateTime.MinValue; DataTable tblChuong; tblChuong = csCont.CaSauAn_GetChuongByLoaiCa(int.Parse(hdCaSauAn.Value), int.Parse(ddlLoaiCa.SelectedValue)); grvDanhSach.DataSource = tblChuong; grvDanhSach.DataBind(); } }