public class PageHelper    {        /// 
        /// 标签        /// 
        public string Tag { get; set; }        /// 
        /// 选中的标签样式        /// 
        public string TagCurr { get; set; }        /// 
        /// 分页的路径        /// 
        public string Url { get; set; }        /// 
        /// 当前页        /// 
        public int PageIdnex { get; set; }        /// 
        /// 总页数        /// 
        public int PageCount { get; set; }        /// 
        ///  实现分页算法        /// 
        /// 
             public string CreatePage( )        {            //1.1当前页大于总页数            if (PageIdnex > PageCount) return null;            StringBuilder sb = new StringBuilder();            //1.2当总页数小于5条时，显示全部的页码            if (PageCount <= 5)            {                //拼接页码                for (int i = 1; i <= PageCount; i++)                {                    if (PageIdnex == i)                    {                        //拼接当前页                        sb.Append($"{i}");                    }                    else                    {                        sb.Append($"{i}");                    }                }                return sb.ToString();            }            else            {                //2.2 总页数大于5，当前页小于4时                if (PageIdnex <= 4)                {                    //2.2.1 当前页靠近尾页                    if (PageCount - PageIdnex <= 3)                    {                        //拼接第一页                        sb.Append($"1...");                        for (int i = PageIdnex - 1; i <= PageCount; i++)                        {                            if (PageIdnex == i)                            {                                //拼接当前页                                sb.Append($"{i}");                            }                            else                            {                                sb.Append($"{i}");                            }                        }                    }                    else                    {                        //2.2.2当前页靠近首页                        for (int i = 1; i <= PageIdnex + 2; i++)                        {                            if (PageIdnex == i)                            {                                sb.Append($"{i}");                            }                            else                            {                                sb.Append($"{i}");                            }                        }                        //拼接最后一页                        sb.Append($"...{PageCount}");                    }                }                else                {                    //2.3 总页数大于5，当前页大于4时                    sb.Append($"1...");                    //2.3.1 当前页大于4,当前页离尾页很近                    if (PageCount - PageIdnex <= 2)                    {                        for (int i = PageIdnex - 2; i <= PageCount; i++)                        {                            if (PageIdnex == i)                            {                                sb.Append($"{i}");                            }                            else                            {                                sb.Append($"{i}");                            }                        }                    }                    else                    {                        //2.3.2当前页在中间                        for (int i = PageIdnex - 2; i < PageIdnex + 2; i++)                        {                            if (PageIdnex == i)                            {                                sb.Append($"{i}");                            }                            else                            {                                sb.Append($"{i}");                            }                        }                        sb.Append($"...{PageCount}");                    }                }                return sb.ToString();            }

 

 

控制器 var list = new List<string>();

for (int i = 1; i <= 100; i++)            {                list.Add("北京朝阳区" + i);            }            int pageSzie = 10;            int pageCount = 0;            if (list.Count % pageSzie == 0)            {                pageCount = list.Count / pageSzie;            }            else            {                pageCount = (list.Count / pageSzie) + 1;            }            PageHelper ph = new PageHelper            {                Tag = "a",                TagCurr = "curr",                Url = "/testpage/list/",                 PageIndex=pageIndex,                 PageCount=pagecount

};            var strHtml = ph.CreatePage();            var pageList = list.Skip((pageIndex - 1) * pageSzie).Take(pageSzie).ToList();            ViewBag.StrHtml = strHtml;            ViewBag.PageList = pageList;

JS

function fenye_ok() {    pager("/TestPage/list", 1);}function pager(href, pageIndex) {    var num = $("#num").val();    $("#div-load").load("/TestPage/list", { "pageIndex": pageIndex, "num": num }, function () { });}