.net mvc 分页

        public static MvcHtmlString PageControl(this HtmlHelper html, PageData page)
        {
            if (page == null || page.totalpage == 0)
                return MvcHtmlString.Create(string.Empty);

            page.pageindex = page.pageindex < 1 ? 1 : page.pageindex;
            string url = HttpContext.Current.Request.Url.ToString();
            if (url.IndexOf('#') > -1)
                url = url.Substring(0, url.IndexOf('#'));

            StringBuilder sb = new StringBuilder();
            sb.Append("<div class='paging-toolbar'>");
            sb.Append("<ul class='pagination'>");
            #region 首页
            if (page.totalpage > 1)
                sb.Append("<li><a href='" + GetUrl(url, 1) + "'>首页</a></li>");
            #endregion

            #region 上一页
            if (page.pageindex > 1)
                sb.Append("<li><a href='" + GetUrl(url, page.pageindex - 1) + "'>上一页</a></li>");
            #endregion

            #region 中间和当前页
            var half = page.count % 2 == 0 ? page.count / 2 : page.count / 2 + 1; // 展示页一半
            var leng = page.count;
            if (page.count > page.totalpage) leng = page.totalpage;

            if (page.pageindex > page.totalpage - leng + half)
            {
                for (int i = page.totalpage - leng + 1; i <= page.totalpage; i++)
                {
                    if (i == page.pageindex)
                    {
                        sb.Append("<li class='active'><a href='" + GetUrl(url, page.pageindex) + "'>" + page.pageindex + "</a></li>");
                    }
                    else
                    {
                        sb.Append("<li><a href='" + GetUrl(url, i) + "'>" + i + "</a></li>");
                    }
                }
            }
            else
            {
                for (int i = 1; i <= leng; i++)
                {
                    if (i == half)
                    {
                        sb.Append("<li class='active'><a href='" + GetUrl(url, page.pageindex) + "'>" + page.pageindex + "</a></li>");
                    }
                    else
                    {
                        var p = page.pageindex - half + i;
                        if (p > 0)
                            sb.Append("<li><a href='" + GetUrl(url, p) + "'>" + p + "</a></li>");
                        else
                            leng += 1;
                    }
                }
            }
            #endregion

            #region 下一页
            if (page.pageindex < page.totalpage)
                sb.Append("<li><a href='" + GetUrl(url, page.pageindex < 2 ? 2 : page.pageindex + 1) + "'>下一页</a></li>");
            #endregion

            #region 末页
            if (page.totalpage > 1)
                sb.Append("<li><a href='" + GetUrl(url, page.totalpage) + "'>末页</a></li>");
            #endregion

            sb.Append("</ul>");
            sb.Append("</div>");

            return MvcHtmlString.Create(sb.ToString());
        }

    public class PageData
    {
        /// <summary>
        /// 展示的页数
        /// </summary>
        public int count { get; set; }

        /// <summary>
        /// 当前页
        /// </summary>
        public int pageindex { get; set; }

        /// <summary>
        /// 总页数
        /// </summary>
        public int totalpage { get; set; }

        /// <summary>
        /// 总条数
        /// </summary>
        public int totalrecord { get; set; }
    }