数据库的DataBase connection 简单池功能启示

eDAO.CONN_STRING_NON_DTC;
        private  string DbPoolConnStr
        {
            get
            {
                return DataAccess.BaseDAO.CONN_STRING_NON_DTC;
            }
        }
        private static int _PoolMaxCount = 10;
        /// <summary>
        /// Gets or sets the pool max count.
        /// </summary>
        /// <value>The pool max count.</value>
        public new  int PoolMaxCount
        {
            get
            {
                return _PoolMaxCount;
            }
            set
            {
                base.PoolMaxCount = _PoolMaxCount;
                _PoolMaxCount = value;
            }
        }
        /// <summary>
        /// 创建数据库连接对象
        /// </summary>
        /// <returns>已打开的数据库连接对象</returns>
        protected override SqlConnection Create()
        {
            SqlConnection conn = new SqlConnection(DbPoolConnStr);
            conn.Open();
            return conn;
        }

        /// <summary>
        /// 验证连接状态
        /// </summary>
        /// <param name="t">数据库连接对象</param>
        /// <returns>连接状态Open ： true   Close：false</returns>
 &n