.net 分页案例效果

 string path_query = "RigthAdvent.aspx?";#region 分页

        /// <summary>
        /// 分页代码
        /// </summary>
        /// <param name="totalResult">总的结果条数</param>
        /// <param name="pageSize">每一页的大小</param>
        /// <param name="currentPage">当前页码</param>
        /// <returns>分页的html</returns>
        public string Paging(double totalResult, int pageSize, int currentPage)
        {
            //在形如“上一页 1 ... 4 5 6 7 8 ... 100 下一页”的分页效果中，
            //leftNum = 4，相应的rightNum = 8; currentPage = 6; step = 2（从4到6间的差叫做step）

            string pageUrl = "";
            //左右延伸个数
            int step = ;

            int leftNum;
            int rightNum;

            //总页数
            string allshuju = totalResult.ToString();
            int totalPageCount = (int)Math.Ceiling(totalResult / pageSize);

            //是否显示上一页
            if (currentPage > )
            {
                pageUrl += "<a href='" + path_query + "page=" + (currentPage - ) + "'>上一页</a>";
            }

            //此时应该这样显示页码 上一页 1 ...  5 6 7 8 9 ... 100 下一页
            //即当前浏览的页数在中间几页
            if ((currentPage - step) >  && (totalPageCount > step *  + ))
            {

                //第一页
                pageUrl += "<a href='" + path_query + "page=1'>1</a>";

                //标识变量，标识当前页是否是倒数几页，该变量在下面会用到
                bool isLastFiewPages = false;

                //判断是否是倒数后几页
                if (currentPage + (step *  +  + ) > totalPageCount)
                {
                    leftNum = totalPageCount - (step *  + );
                    rightNum = totalPageCount;
                    isLastFiewPages = true;
                }
                else
                {
                    leftNum = currentPage - step;
                    rightNum = currentPage + step;
                }

                if (leftNum -  > )
                {
                    pageUrl += "<span>...</span>";
                }

                //拼装分页代码
                for (int i = leftNum; i <= rightNum; i++)
                {
                    if (i == currentPage)
                    {
                        //当前页 
                        pageUrl = pageUrl + "<span class='currentpage'>" + i + "</span>";
                    }
                    else
                    {
                        //有连接
                        pageUrl = pageUrl + "<a href='" + path_query + "page=" + i + "'>" + i + "</a>";
                    }
                }
                //最后一页
                if (!isLastFiewPages)
                {
                    pageUrl += "<span>...</span><a href='" + path_query + "page=" + totalPageCount + "'>" + totalPageCount + "</a>";
                }

            }
            //此时应该这样显示页码 上一页 1 2 3 4 5 6 ... 100 下一页或者
            //当总页数小于或等于(2 * step + 1 + 1)的时候应该这样显示 上一页 1 2 3 4 5 下一页
            else
            {
                if (currentPage <= )
                {
                    currentPage = ;
                }

                leftNum = ;
                //rightNum总页数和step * 2 + 1 + 1中较小的那个，
                rightNum = totalPageCount < (step *  +  + ) ? totalPageCount : (step *  + );

                for (int i = leftNum; i <= rightNum; i++)
                {
                    if (i == currentPage)
                    {
                        pageUrl += "<span class='currentpage'>" + currentPage + "</span>";
                    }
                    else
                    {
                        pageUrl += "<a href='" + path_query + "page=" + i + "'>" + i + "</a>";
                    }
                }

                //如果总条数大于前几页连续显示的条数需要这样显示 上一页 1 2 3 4 5 6 ... 100 下一页
                if (totalPageCount > (step *  + ))
                {
                    if (totalPageCount -  > rightNum)
                    {
                        pageUrl += "<span>...</span>";
                    }
                    pageUrl += "<a href='" + path_query + "page=" + totalPageCount + "'>" + totalPageCount + "</a>";
                }
            }
            int tempxia = currentPage + ;
            int tempqian = currentPage - ; ;
            if (tempxia >= totalPageCount)
            {
                tempxia = totalPageCount;
            }
            if (tempqian <= )
            {
                tempqian = ;
            }
            pageShow = @"<a href='" + path_query + "page=" + tempxia + "'> <img src='images/sdhouse_05.gif' title='下一页'/></a><span>" + currentPage + "/" + totalPageCount + "</span><a href='" + path_query + "page=" + tempqian + "'><img src='images/sdhouse_03.gif' title='上一页'/></a>";

            if (currentPage < totalPageCount)
            {
                pageUrl += "<a href='" + path_query + "page=" + (currentPage + ) + "' id='mainnext'>下一页</a>";
            }
            return pageUrl;
        }
        #endregion .pageinglist {
display: block;
height: 50px;
border-top: 1px solid #dedede;
background: #fafafa;
float: right;
margin-right: 15px;
padding-top: 15px;
width: 100%;
}
pageinglist span {
color: #434343;
padding: 6px 10px 6px 10px;
/* background-color: #ff9418; */
border-radius: 3px;
/* border: 1px solid #ff9418; */
float: left;
font-size: 14px;
}
pageinglist a {
margin-left: 4px;
margin-right: 4px;
border: 1px solid #ddd;
padding: 6px 10px 6px 10px;
border-radius: 3px;
float: left;
color: #000;
font-size: 14px;
text-decoration: none;
}