MVC:添加Html辅助器

using System;

namespace SportsStore.WebUI.Models {

public class PagingInfo {
public int TotalItems { get; set; }
public int ItemsPerPage { get; set; }
public int CurrentPage { get; set; }

public int TotalPages {
get { return (int)Math.Ceiling((decimal)TotalItems / ItemsPerPage); }
}
}
}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.Mvc;

using SportsStore.WebUI.Models;

using System.Text;

namespace SportsStore.WebUI.HtmlHelpers

{

    public static class PagingHelpers

    {

        public static MvcHtmlString PageLinks(this HtmlHelper html,

                                              PagingInfo pagingInfo,

                                              Func<int, string> pageUrl)

        {

            StringBuilder result = new StringBuilder();

            for (int i = ; i <= pagingInfo.TotalPages; i++)

            {

                TagBuilder tag = new TagBuilder("a");

                tag.MergeAttribute("href", pageUrl(i));

                tag.InnerHtml = i.ToString();

                if (i == pagingInfo.CurrentPage)

                {

                    tag.AddCssClass("selected");

                    tag.AddCssClass("btn-primary");

                }

                tag.AddCssClass("btn btn-default");

                result.Append(tag.ToString());

            }

            return MvcHtmlString.Create(result.ToString());

        }

    }

}