StringBuilder

　　StringBuilder sh = new StringBuilder();

　　sh.Append(" select * from la_sms_set ");
　　sh.Append(" where isdel = 0 && type = 'sms' ");
　　using (var db = DataSource.GetInstance())
　　{
　　　　List<la_sms_set> res = db.SqlQueryable<la_sms_set>(sh.ToString()).ToList();
　　　　return res;
　　}