ViewModelでIPagedListページング機能を使用し、asp .net mvcで結合する方法

Question

私はasp .net mvcに新しく、viewmodelでIPagedListページング機能を実装しようとしています。ページングと検索は正常なページでうまくいきますが、私はviewmodelと結合できません。

私はこのアプローチを以下しています。ここではhttp://www.asp.net/mvc/overview/getting-started/getting-started-with-ef-using-mvc/sorting-filtering-and-paging-with-the-entity-framework-in-an-asp-net-mvc-application

は私のViewModelクラスです：

ここ

public class SponserDisplayViewModel 
    { 
     public Sponser Sponser { get; set; } 
     public SponserDetail SponserDetail { get; set; } 
     public SponserType SponserType { get; set; } 
    } //--- Here All three are different classes. 

私はコントローラーで試してみました何：

public ActionResult Index(string searchString, int? page, string btnSearch) 
     { 
      var viewModel = from s in db.Sponsers 
          join st in db.SponserTypes on s.SponserTypeId equals st.Id into st2 
          from st in st2.DefaultIfEmpty() 
          select new SponserDisplayViewModel { Sponser = s, SponserType = st }; 

      if (btnSearch == "Reset") 
      { searchString = string.Empty; } 
      if (!String.IsNullOrEmpty(searchString)) 
      { 
       viewModel = from s in db.Sponsers 
          join st in db.SponserTypes on s.SponserTypeId equals st.Id into st2 
          from st in st2.DefaultIfEmpty() 
          where st.Name.Contains(searchString) 
          select new SponserDisplayViewModel { Sponser = s, SponserType = st }; 
      } 
      int pageSize = 20; 
      int pageIndex = 1; 
      pageIndex = page.HasValue ? Convert.ToInt32(page) : 1; 


//==================Getting error here 
      IPagedList<SponserDisplayViewModel> po = from s in db.Sponsers 
              join st in db.SponserTypes on s.SponserTypeId equals st.Id into st2 
              from st in st2.DefaultIfEmpty().OrderBy(a => a.DisplayOrder).ToPagedList(pageIndex, pageSize) 
              select new SponserDisplayViewModel { Sponser = s, SponserType = st }; 

      return View(po); 
     } 

を

Answer 1

ガットを提案して下さい私の答え：

var po = from s in db.Sponsers 
     join st in db.SponserTypes on s.SponserTypeId equals st.Id into st2 
     from st in st2.DefaultIfEmpty 
     orderby st.DisplayOrder 
     select new SponserDisplayViewModel { Sponser = s, SponserType = st }; 
return View(po.ToPagedList(pageIndex, pageSize));