从联接表 LINQ 中填充列表

Question

using System.Collections.Generic;  
using ViewModelsDemo.Models;  

namespace ViewModelsDemo.ViewModels  
{  
    public class CustomerViewModel  
    {  

        public List<JoinedTableClass> JoinedTable { get; set; }  
    }  
    public class JoinedTableClass
{

    public string FirstField { get; set; }  // Table1
    public string SecondField { get; set; } // Table2
    public string ThirdField{ get; set; }  // Table 2


}

}  

我尝试执行以下操作，但没有成功。

        var customerViewModel = new CustomerViewModel  
        {

            JoinedTable = (from Cust in Tables.Customer

            join D in Tables.Dep on Cust.Customer_ID equals D.ID

            select new CustomerViewModel  { Cust.FirstName , Cust.LastName , D.Serialz })

        };

        return View(customerViewModel);

在最后一行，我有以下错误：

无法使用已初始化的集合启动类型“CustomerViewModel”，因为它没有实现 System.Collections.Ienumerable

Answer 1

//改变你的实现 如果你只想要 JoinedTableClass 的列表，那么使用这个

            var JoinedTable = (from Cust in Tables.Customer
                  join D in Tables.Dep on Cust.Customer_ID equals D.ID
                 select new JoinedTableClass
                 {
                   FirstField = Cust.FirstName ,
                   SecondField = Cust.LastName ,
                   ThirdField = D.Serialz 
                 }).ToList()



        return View(JoinedTable );