mvc下linq多表查询使用viewModel的问题
最近在开发mvc3的时候发现了一个问题，就是如何在view页面显示多表查询的数据，最简单的办法就是使用viewmodel了，以下本人使用viewmodel来实现多表查询的3中方法，

先贴代码再说：

1  第一种是将页面显示多表的数据（毕业论文 也就是汇总各个model表的字段），然后再viewmodel中显示

public class ResultAdList
2     {
3         public int A_Id;
4         public string A_userid;
5         public int B_Id;
6         public string B_typename;
7     }

public class ResultAdList
2     {
3         public int A_Id;
4         public string A_userid;
5         public int B_Id;
6         public string B_typename;
7     }

public class AdRepository
    {
        private DataAdDataContext db = new DataAdDataContext();
 
        public IQueryable<ResultAdList> AdList { get; private set; }
         public AdRepository()
        {
            this.AdList = from a in db.R_ad_list
                          join b in db.R_ad_type on a.A_typeid equals b.id
                          select new ResultAdList
                          {
                              A_Id = a.id,
                              A_userid = a.A_userid,
                              B_Id = b.id,
                              B_typename=b.T_ad_typename
              };
        }
 
}

 public ActionResult Index()
2         {
3             return View("Index", new AdRepository());
4         }

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Dmj.Models.AdRepository>" %>
 
 <% foreach (var item in Model.AdList) { %>
 <% } %>

目测三种方法都差不多，只有细微的差别，个人觉得第三中最简单也是最常用的