public void LoadGridData() { DataTable dtm = new DataTable(); dtm = examBusiness.zarfiat_per_cityes(ddl_saat.SelectedValue, ddl_day.SelectedValue, int.Parse(ddl_shahr.SelectedValue)); dtzarfiat = examBusiness.Get_zarfiat_per_city(ddl_saat.SelectedValue, ddl_day.SelectedValue, int.Parse(ddl_shahr.SelectedValue)); if (dtzarfiat.Rows.Count > 0) { if (dtm.Rows.Count > 0) { var dids_in_city = dtm.AsEnumerable().Select(s => s.Field <string>("coursecode")).ToList(); var cityId = int.Parse(ddl_shahr.SelectedValue ?? "-1"); baghimande = examBusiness.CheckIsClassSetRange(dids_in_city, cityId); hdnSearchedCity.Value = ddl_shahr.SelectedValue; grd_Class.Visible = true; grd_Class.DataSource = dtm; grd_Class.DataBind(); } else { rwm.RadAlert("تخصیص داده شده است", null, 100, "پیام", ""); } } else { grd_Class.Visible = false; rwm.RadAlert(" در این سانس کلاسی موجود نیست", null, 100, "پیام", ""); } }