1 namespace System.Web.Mvc 2 { 3     public static class TianqyHtmlHelper 4     { 5         /// <summary> 6         /// 分页HtmlHelper 7         /// </summary> 8         public static HtmlString ShowPageNavigate(this HtmlHelper htmlHelper, int currentPage, int pageSize, int totalCount) 9         {10             pageSize = pageSize == 0 ? 3 : pageSize;11             var redirectTo = htmlHelper.ViewContext.RequestContext.HttpContext.Request.Url.AbsolutePath;12             var totalPages = Math.Max((totalCount + pageSize - 1) / pageSize, 1); //总页数13             var outPut = new StringBuilder();14             if (totalPages > 1)15             {16                 //首页17                 if (currentPage != 1)18                 {19                     outPut.AppendFormat("<a class=‘pageLink‘ href=http://www.mamicode.com/‘{0}?pageIndex=1&pageSize={1}‘>首页", redirectTo, pageSize);20                 }21                 outPut.Append(" ");22                 //上一页23                 if (currentPage > 1)24                 {25                     outPut.AppendFormat("<a class=‘pageLink‘ href=http://www.mamicode.com/‘{0}?pageIndex={1}&pageSize={2}‘>上一页", redirectTo, currentPage - 1, pageSize);26                 }27                 outPut.Append(" ");28                 //一共最多显示10个页码，前5个，后5个29                 int n = 5;30                 for (int i = 0; i <= 10; i++)31                 {32                     if ((currentPage + i - n) > 1 && (currentPage + i - n) <= totalPages)33                     {34                         if (i == n)35                         {36                             outPut.AppendFormat("<a class=‘pageCurrent‘ href=http://www.mamicode.com/‘{0}?pageIndex={1}&pageSize={2}‘>{3}", redirectTo, currentPage, pageSize, currentPage);37                         }38                         else39                         {40                             outPut.AppendFormat("<a class=‘pageLink‘ href=http://www.mamicode.com/‘{0}?pageIndex={1}&pageSize={2}‘>{3}", redirectTo, currentPage + i - n, pageSize, currentPage + i - n);41                         }42                     }43                     outPut.Append(" ");44                 }45                 //下一页46                 if (currentPage < totalPages)47                 {48                     outPut.AppendFormat("<a class=‘pageLink‘ href=http://www.mamicode.com/‘{0}?pageIndex={1}&pageSize={2}‘>下一页", redirectTo, currentPage + 1, pageSize);49                 }50                 outPut.Append(" ");51                 //末页52                 if (currentPage != totalPages)53                 {54                     outPut.AppendFormat("<a class=‘pageLink‘ href=http://www.mamicode.com/‘{0}?pageIndex={1}&pageSize={2}‘>末页", redirectTo, totalPages, pageSize);55                 }56                 outPut.Append(" ");57             }58             outPut.AppendFormat("第{0}页/共{1}页", currentPage, totalPages);59             return new HtmlString(outPut.ToString());60         }61     }62 }