public IList<Core.Business.AccountRecommend> GetAllAccountRecommend()
        {
            IList<Core.Business.AccountRecommend> accountRecommendlist = new List<Core.Business.AccountRecommend>();
            SqlServerUtility sql = new SqlServerUtility();

            SqlDataReader reader = sql.ExecuteSqlReader(SqlGetAllAccountRecommend);

            if(reader != null)
            {
                while(reader.Read())
                {
                    Core.Business.AccountRecommend accountRecommend = new Core.Business.AccountRecommend();

                    if (!reader.IsDBNull(0)) accountRecommend.Id = reader.GetInt64(0);
                    if (!reader.IsDBNull(1)) accountRecommend.RecommendDate = reader.GetDateTime(1);
                    if (!reader.IsDBNull(2)) accountRecommend.AccountId = reader.GetInt64(2);
                    if (!reader.IsDBNull(3)) accountRecommend.RecommendId = reader.GetInt64(3);
                    if (!reader.IsDBNull(4)) accountRecommend.AccountName = reader.GetString(4);

                    accountRecommend.MarkOld();
                    accountRecommendlist.Add(accountRecommend);
                }
                reader.Close();
            }
            return accountRecommendlist;
        }
        public Core.Business.AccountRecommend Select(Int64 id)
        {
            SqlServerUtility sql = new SqlServerUtility();

            sql.AddParameter("@Id", SqlDbType.BigInt, id);
            SqlDataReader reader = sql.ExecuteSqlReader(SqlSelectAccountRecommend);

            if (reader != null && !reader.IsClosed && reader.Read())
            {
                Core.Business.AccountRecommend accountRecommend = new Core.Business.AccountRecommend();

                if (!reader.IsDBNull(0)) accountRecommend.Id = reader.GetInt64(0);
                if (!reader.IsDBNull(1)) accountRecommend.RecommendDate = reader.GetDateTime(1);
                if (!reader.IsDBNull(2)) accountRecommend.AccountId = reader.GetInt64(2);
                if (!reader.IsDBNull(3)) accountRecommend.RecommendId = reader.GetInt64(3);
                if (!reader.IsDBNull(4)) accountRecommend.AccountName = reader.GetString(4);

                reader.Close();
                return accountRecommend;
            }
            else
            {
                if (reader != null && !reader.IsClosed)
                    reader.Close();

                return null;
            }
        }