• ASP.NET MVC+Bootstrap个人博客之打造清新分页Helper(三)


    有点另类,分页直接是在后台拼接好html,然后发送到前台的:

      1. 分页容器:

    <div class="pagination">
        <ul>
           //************分页HTML*********
        </ul>
    </div>

         2.  PagerHelper:

    复制代码
    namespace ZYN.BLOG.WebHelper
    {
        public class PagerHelper
        {
            /// <summary>
            /// 生成分页Html数据
            /// </summary>
            /// <param name="currentPage">当前页</param>
            /// <param name="pageSize">页容量</param>
            /// <param name="totalCount">数据总条数</param>
            /// <returns>pagerHtmlString</returns>
            public static string GeneratePagerString(int currentPage, int pageSize, int totalCount)
            {
                var redirectToUrl = HttpContext.Current.Request.Url.AbsolutePath;
                pageSize = pageSize <= 0 ? 4 : pageSize;
    
                //1.0 总页数
                int totalPages = Math.Max((totalCount + pageSize - 1) / pageSize, 1);
    
                //2.0 分页条的容量
                int pageBarSize = 6;//默认一个分页条显示6个页码。分页条容量 
    
                //3.0 分页条的个数 totalPages个页数按 pageBarSize = 6  可以 分为多少个分页条
                int pageBarNum = (totalPages + pageBarSize - 1) / pageBarSize; // totalPages=13时,也就是把13个页码分成3个分页条
    
                //判断当前页currentPage坐落在第几个分页条内
                int position = (currentPage - 1) / pageBarSize;  
    
                //根据分页条的序号,计算出该分页条的第一个页码start和最后一个页码end
                int start = position * pageBarSize + 1;
    
                //如果是最后一个分页条,则需判断它实际的页条容量;否则页条容量就是pageBarSize
                int curBarCapacity = pageBarSize;
                if (position == pageBarNum - 1)
                {
                    curBarCapacity = totalPages - (pageBarNum - 1) * pageBarSize;
                }
    
                StringBuilder pagerHtmlString = new StringBuilder();
                StringBuilder endHtmlString = new StringBuilder();
    
                //处理首页
                pagerHtmlString.AppendFormat("<li id='start-page'><a href='{0}?pageIndex={1}&pageSize={2}'>首页</a></li> ", redirectToUrl, 1, pageSize);
    
                //处理上一页:如果当前页不是第一页,就加上上一页
                if (currentPage > 1)
                {
                    pagerHtmlString.AppendFormat("<li class='prev-page'><a href='{0}?pageIndex={1}&pageSize={2}'>上一页</a></li> ", redirectToUrl, currentPage - 1, pageSize);
                }
    
                //假如起始位置start为1  7  13
                for (int i = 0; i < curBarCapacity; i++)  //curBarCapacity=3  i=0 1 2
                {
                    int j = start + i; //要显示的页码当量值
                    if (j == currentPage)
                    {
                        //对当前页的处理:class=active
                        pagerHtmlString.AppendFormat("<li class='active show-page'><span>{0}</span></li> ", currentPage);
    
                        if (curBarCapacity == pageBarSize)
                        {
                            //不处理最后一个分页条页
                            if (currentPage == start + pageBarSize - 1)
                            {
                                if (currentPage + 1 < totalPages)
                                {
                                    endHtmlString.AppendFormat("<li class='show-page'><a href='{0}?pageIndex={1}&pageSize={2}'>{3}</a></li>", redirectToUrl, currentPage + 1, pageSize, currentPage + 1);
                                }
                                endHtmlString.Append("<li class='show-page'><span>...</span></li>");
                                endHtmlString.AppendFormat("<li class='show-page'><a href='{0}?pageIndex={1}&pageSize={2}'>{3}</a></li>", redirectToUrl, totalPages, pageSize, totalPages);
                            }
                        }
    
                    }
                    else
                    {
                        pagerHtmlString.AppendFormat("<li class='show-page'><a href='{0}?pageIndex={1}&pageSize={2}'>{3}</a></li> ", redirectToUrl, j, pageSize, j);
                    }
                }
    
                //省略号的处理
                pagerHtmlString.Append(endHtmlString.ToString());
    
                //处理下一页:如果当前页不是最后一页,则加上下一页。也即中间的所有分页条都显示下一页
                if (currentPage != totalPages)
                {
                    pagerHtmlString.AppendFormat("<li class='next-page'><a href='{0}?pageIndex={1}&pageSize={2}'>下一页</a></li> ", redirectToUrl, currentPage + 1, pageSize);
                }
    
                //处理末页
                pagerHtmlString.AppendFormat("<li id='end-page'><a href='{0}?pageIndex={1}&pageSize={2}'>末页</a></li> ", redirectToUrl, totalPages, pageSize);
    
                pagerHtmlString.AppendFormat("<li id='total-page'><span>共-{0}-页</span></li>", totalPages);
    
                pagerHtmlString.Append(" ");
    
                return pagerHtmlString.ToString();
            }
        }
    }
    复制代码

    3 渲染出来的分页HTML是这样的:

    复制代码
    <div class="pagination">
        <ul>     <li id="start-page"><a href="/Home/WrapArtList/0?pageIndex=1&amp;pageSize=6">首页</a></li>      <li class="active show-page"><span>1</span></li>      <li class="show-page"><a href="/Home/WrapArtList/0?pageIndex=2&amp;pageSize=6">2</a></li>      <li class="show-page"><a href="/Home/WrapArtList/0?pageIndex=3&amp;pageSize=6">3</a></li>      <li class="show-page"><a href="/Home/WrapArtList/0?pageIndex=4&amp;pageSize=6">4</a></li>      <li class="show-page"><a href="/Home/WrapArtList/0?pageIndex=5&amp;pageSize=6">5</a></li>      <li class="next-page"><a href="/Home/WrapArtList/0?pageIndex=2&amp;pageSize=6">下一页</a></li>     <li id="end-page"><a href="/Home/WrapArtList/0?pageIndex=5&amp;pageSize=6">末页</a></li>      <li id="total-page"><span>共-5-页</span></li>     </ul>
    </div>
    复制代码

    4. CSS样式:

    复制代码
    /* 分页样式pagination ====== */
    .pagination { /* div pagination*/
        margin: 0;
        padding: 20px;
        text-align: center;
        font-size: 12px;
        display: block;
    }
    
        .pagination ul {
            display: inline-block;
            *display: inline;
            *zoom: 1;
            margin-left: 0;
            margin-bottom: 0;
            padding: 0;
        }
    
            .pagination ul > li {
                display: inline;
            }
    
                .pagination ul > li > a,
                .pagination ul > li > span {
                    margin: 0 2px;
                    float: left;
                    padding: 5px 12px;
                    background-color: #ddd;
                    color: #666;
                    border-radius: 2px;
                    opacity: .88;
                }
    
                    .pagination ul > li > a:hover,
                    .pagination ul > li > a:focus {
                        background-color: #bce8f1;
                    }
    
            .pagination ul > .active > a,
            .pagination ul > .active > span {
                background-color: #45B6F7;
                color: #fff;
            }
    
            .pagination ul > .active > a,
            .pagination ul > .active > span {
                cursor: default;
            }
    
            .pagination ul > li > span,
            .pagination ul > .disabled > span,
            .pagination ul > .disabled > a,
            .pagination ul > .disabled > a:hover,
            .pagination ul > .disabled > a:focus {
                color: #999999;
                background-color: transparent;
                cursor: default;
            }
    /* 自定义的分页pagination 结束====== */
    复制代码
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  • 原文地址:https://www.cnblogs.com/zhangxiaolei521/p/5631866.html
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