遇到这个异常：无法从用法中推导出方法

遇到这个错误：无法从用法中推导出方法
无法从用法中推导出方法“System.Web.Mvc.WebPage.GetPageList<T>(System.Linq.IOrderedQueryable<T>, int, int)”的类型实参。请尝试显式指定类型实参。
D:\项目练习\MvcTest\MvcApplication\MvcApplication\Areas\AdminManage\Controllers\AppLogoController.cs

下面是我的代码,我都贴出来了

Service

C# code

public IList<web_AppLogo> list()        {            try            {                var data = db.web_AppLogo.ToList();                return data;            }            catch (Exception)            {                return null;            }        }

C# code

public interface IAppLogoService    {        IList<web_AppLogo> list();    }

C# code

public ActionResult List(int? id, int? Page)        {            var data = service.list();            int PageSize = 10;            int PageIndex = Page ?? 1;            if (PageIndex < 1) PageIndex = 1;            ViewData["PageIndex"] = PageIndex;            ViewData["PageSize"] = PageSize;            ViewData["ReCordCount"] = data.Count();            return View(WebPage.GetPageList(data, PageIndex, PageSize));        }

C# code

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;using System.Web.Mvc.Html;using System.Text;namespace System.Web.Mvc{    public static class WebPage    {        public static IQueryable<T> GetPageList<T>(IOrderedQueryable<T> List, int PageIndex, int PageSize)        {            int PageCount = GetPageCount(PageSize, List.Count());            PageIndex = CheckPageIndex(PageIndex, PageCount);            return List.Skip((PageIndex - 1) * PageSize).Take(PageSize);        }        public static int GetPageCount(int PageSize, int recordCount)        {            int PageCount = recordCount % PageSize == 0 ? recordCount / PageSize : recordCount / PageSize + 1;            if (PageCount < 1) PageCount = 1;            return PageCount;        }        public static int CheckPageIndex(int PageIndex, int PageCount)        {            if (PageIndex > PageCount) PageIndex = PageCount;            if (PageIndex < 1) PageIndex = 1;            return PageIndex;        }        public enum WebPageMode { Normal, Numeric, GroupNumeric }        public static MvcHtmlString ShowWebPage(this HtmlHelper Html, string urlFormat, int PageIndex, int PageSize, int recordCount, WebPageMode Mode)        {            urlFormat = urlFormat.Replace("%7B0%7D", "{0}");            int PageCount = GetPageCount(PageSize, recordCount);            StringBuilder TempHtml = new StringBuilder();            TempHtml.AppendFormat("总共{0}条记录,共{1}页,当前第{2}页&nbsp;&nbsp;", recordCount, PageCount, PageIndex);            if (PageIndex == 1)            {                TempHtml.Append("首页&nbsp;上一页&nbsp;");            }            else            {                TempHtml.AppendFormat("<a href=\"{0}\">首页</a>&nbsp;", string.Format(urlFormat, 1))                    .AppendFormat("<a href=\"{0}\">上一页</a>&nbsp;", string.Format(urlFormat, PageIndex - 1));            }            // 数字分页            switch (Mode)            {                case WebPageMode.Numeric:                    TempHtml.Append(GetNumericPage(urlFormat, PageIndex, PageSize, PageCount));                    break;                case WebPageMode.GroupNumeric:                    TempHtml.Append(GetGroupNumericPage(urlFormat, PageIndex, PageSize, PageCount));                    break;            }            if (PageIndex == PageCount)            {                TempHtml.Append("下一页&nbsp;末页");            }            else            {                TempHtml.AppendFormat("<a href=\"{0}\">下一页</a>&nbsp;", string.Format(urlFormat, PageIndex + 1))                    .AppendFormat("<a href=\"{0}\">末页</a>", string.Format(urlFormat, PageCount));            }            return MvcHtmlString.Create(TempHtml.ToString());        }        /// <summary>        /// 分组数字分页        /// </summary>        /// <param name="urlFormat"></param>        /// <param name="pageIndex"></param>        /// <param name="pageSize"></param>        /// <param name="pageCount"></param>        /// <returns></returns>        public static string GetGroupNumericPage(string urlFormat, int pageIndex, int pageSize, int pageCount)        {            int GroupChildCount = 10; // 分组显示个数            int DGroup = pageIndex / GroupChildCount; //当前组            int GroupCount = pageCount / GroupChildCount;      //组数            //如果正好是当前组最后一页 不进入下一组            if (pageIndex % GroupChildCount == 0) DGroup--;            //当前组数量            int GroupSpan = (DGroup == GroupCount) ? pageCount % GroupChildCount : GroupChildCount;            StringBuilder TempHtml = new StringBuilder();            for (int i = DGroup * GroupChildCount + 1; i <= DGroup * GroupChildCount + GroupSpan; i++)            {                if (i == pageIndex)                    TempHtml.AppendFormat("<span style=\"color:red\">{0}</span>&nbsp;", i);                else                    TempHtml.AppendFormat("<a href=\"{0}\">{1}</a>&nbsp;", string.Format(urlFormat, i), i);            }            return TempHtml.ToString();        }        /// <summary>        /// 数字分页        /// </summary>        /// <param name="urlFormat"></param>        /// <param name="pageIndex"></param>        /// <param name="pageSize"></param>        /// <param name="pageCount"></param>        /// <returns></returns>        public static string GetNumericPage(string urlFormat, int pageIndex, int pageSize, int pageCount)        {            int SpanNum = 9;            int BeginNum = pageIndex - (SpanNum - 1) / 2;            if (BeginNum < 1) BeginNum = 1;            int EndNum = pageIndex + (SpanNum - 1) / 2;            if (EndNum > pageCount) EndNum = pageCount;            StringBuilder TempHtml = new StringBuilder();            for (int i = BeginNum; i <= EndNum; i++)            {                if (i == pageIndex)                    TempHtml.AppendFormat("<span style=\"color:red\">{0}</span>&nbsp;", i);                else                    TempHtml.AppendFormat("<a href=\"{0}\">{1}</a>&nbsp;", string.Format(urlFormat, i), i);            }            return TempHtml.ToString();        }    }}