StringBuilder sb = new StringBuilder(); sb.Append("select a.id,a.stationid,a.stationname,a.stationdesc,a.keycode,"); sb.Append("b.address,b.area,b.city,b.establishtime,b.installedcapacity,b.installedpower,b.latitude,b.longitude,"); sb.Append("left join enery_storage_station c on a.stationid = c.stationid "); sb.Append(" where 1=1 "); if (!string.IsNullOrWhiteSpace(name)) { sb.AppendFormat(" and a.stationname like '%{0}%'",@name); } return _repository.GetIFreeSql().Ado.Query<StationsInfoModel>(sb.ToString(), new SqlParameter { ParameterName = "@name", Value = name });