C#简单的通用基础字典实现方法

        /// 在读取数据后发生的事件，用于通知客户
        /// </summary>
        public delegate void afterDataLoadDelegate();

        /// <summary>
        /// 在读取数据前发生的事件，提示客户等待
        /// </summary>
        public delegate void beforeDataLoadDelegate();

        /// <summary>
        /// 在读取数据发生错误时发生，用于错误处理
        /// </summary>
        public delegate void errorDataLoadDelegate(string ErrMSG);

        /// <summary>
        /// 首页按钮
        /// </summary>
        System.Windows.Forms.Button _btFirst;

        /// <summary>
        /// 前页按钮
        /// </summary>
        System.Windows.Forms.Button _btPreview;

        /// <summary>
        /// 下一页按钮
        /// </summary>
        System.Windows.Forms.Button _btNext;

        /// <summary>
        /// 末页按钮
        /// </summary>
        System.Windows.Forms.Button _btLast;

        /// <summary>
        /// 刷新按钮
        /// </summary>
        System.Windows.Forms.Button _btreflesh;

        /// <summary>
        /// 记录数提示Label
        /// </summary>