分页组件

实现效果如图：

1.新建一个类:PagerHelper，方法名称：Pager，实现代码：

public class PagerHelper
{
    /// <summary>
    /// 生成页码的html
    /// </summary>
    /// <param name="urlFormat">超链接的格式。/Home?pagenum={pagenum}。地址中用{pagenum}做为当前页码的占位符</param>
    /// <param name="totalSize">总数据条数</param>
    /// <param name="pageSize">每页多少条数据 </param>
    /// <param name="currentPage">当前页的页码</param>
    /// <returns></returns>
    public static RawString Pager(string urlFormat, long totalSize,long pageSize, long currentPage)
    {
        StringBuilder sb = new StringBuilder();
        //总页数
        long totalPageCount = (long)Math.Ceiling((totalSize * 1.0f) / (pageSize * 1.0f));
        //在当前页面前后各最多显示5个页码
        int currentPageNum = 2;
        if (currentPage == 1 || currentPage == totalPageCount)
        {
            currentPageNum = 4;
        }
        else if (currentPage == 2 || currentPage == totalPageCount - 1)
        {
            currentPageNum = 3;
        }
        //计算页码条中第一条的页码
        long firstPageNum = Math.Max(currentPage - currentPageNum, 1);
        //计算页码条中最后一条的页码
        long lastPageNum = Math.Min(currentPage + currentPageNum, totalPageCount);
        sb.Append("<ul class='pagination col-md-12'>");
        if (currentPage > 1)
        {
            sb.AppendLine("<li><a href='" + urlFormat.Replace("{pagenum}", "1") + "'>首页</a></li>");
            sb.AppendLine("<li><a href='" + urlFormat.Replace("{pagenum}", (currentPage - 1).ToString()) + "'>上页</a></li>");
        }
        else
        {
            sb.AppendLine("<li><a>首页</a></li>");
            sb.AppendLine("<li><a>上页</a></li>");
        }
        for (long i = firstPageNum; i <= lastPageNum; i++)
        {
            string url = urlFormat.Replace("{pagenum}", i.ToString());
            if (i == currentPage)
            {
                sb.Append("<li class='active'><a>" + i + "</a></li>");
            }
            else
            {
                sb.Append("<li><a href='" + url + "'>" + i + "</a></li>");
            }
        }
        if (currentPage < totalPageCount)
        {
            sb.AppendLine("<li><a href='" + urlFormat.Replace("{pagenum}", (currentPage + 1).ToString()) + "'>下页</a></li>");
            sb.AppendLine("<li><a href='" + urlFormat.Replace("{pagenum}", totalPageCount.ToString()) + "'>末页</a></li>");
        }
        else
        {
            sb.AppendLine("<li><a>下页</a></li>");
            sb.AppendLine("<li><a>末页</a></li>");
        }
        sb.Append("</ul>");
        return new RawString(sb.ToString());
    }
}

2.css样式:

<style type="text/css">
    .pagination {
        display: inline-block;
        padding-left: 0;
        margin: 20px 0;
        border-radius: 4px;
    }

    .pagination > li {
        display: inline;
    }

    .pagination > li > a,
    .pagination > li > span {
        position: relative;
        float: left;
        padding: 3px 10px;
        margin-left: -1px;
        line-height: 1.42857143;
        color: #337ab7;
        text-decoration: none;
        background-color: #fff;
        border: 1px solid #ddd;
    }

    .pagination > li:first-child > a,
    .pagination > li:first-child > span {
        margin-left: 0;
        border-top-left-radius: 4px;
        border-bottom-left-radius: 4px;
    }

    .pagination > li:last-child > a,
    .pagination > li:last-child > span {
        border-top-right-radius: 4px;
        border-bottom-right-radius: 4px;
    }

    .pagination > li > a:hover,
    .pagination > li > span:hover,
    .pagination > li > a:focus,
    .pagination > li > span:focus {
        z-index: 3;
        color: #23527c;
        background-color: #eee;
        border-color: #ddd;
    }

    .pagination > .active > a,
    .pagination > .active > span,
    .pagination > .active > a:hover,
    .pagination > .active > span:hover,
    .pagination > .active > a:focus,
    .pagination > .active > span:focus {
        z-index: 2;
        color: #fff;
        cursor: default;
        background-color: #337ab7;
        border-color: #337ab7;
    }

    .pagination > .disabled > span,
    .pagination > .disabled > span:hover,
    .pagination > .disabled > span:focus,
    .pagination > .disabled > a,
    .pagination > .disabled > a:hover,
    .pagination > .disabled > a:focus {
        color: #777;
        cursor: not-allowed;
        background-color: #fff;
        border-color: #ddd;
    }

    .pagination-lg > li > a,
    .pagination-lg > li > span {
        padding: 10px 16px;
        font-size: 18px;
        line-height: 1.3333333;
    }

    .pagination-lg > li:first-child > a,
    .pagination-lg > li:first-child > span {
        border-top-left-radius: 6px;
        border-bottom-left-radius: 6px;
    }

    .pagination-lg > li:last-child > a,
    .pagination-lg > li:last-child > span {
        border-top-right-radius: 6px;
        border-bottom-right-radius: 6px;
    }

    .pagination-sm > li > a,
    .pagination-sm > li > span {
        padding: 5px 10px;
        font-size: 12px;
        line-height: 1.5;
    }

    .pagination-sm > li:first-child > a,
    .pagination-sm > li:first-child > span {
        border-top-left-radius: 3px;
        border-bottom-left-radius: 3px;
    }

    .pagination-sm > li:last-child > a,
    .pagination-sm > li:last-child > span {
        border-top-right-radius: 3px;
        border-bottom-right-radius: 3px;
    }
</style>

3.调用：

@Html.Raw(Tools.PagerHelper.Pager("/Home?pn={pagenum}", Model.TotalSize, 10, Model.PageNum))