查看entity生成的sql语句

            using (MK_UboxChsEntities ent = new MK_UboxChsEntities())
            {
                var v = ent.USER_TBL.Where(rec => listID.Contains(rec.USER_NAME));

                ObjectQuery<USER_TBL> parents = v as ObjectQuery<USER_TBL>;
                if (parents != null)
                {
                    string sql = parents.ToTraceString();
                    MessageBox.Show(sql);
                }

                list = v.ToList();
            }