.net mvc4 一个 view 显示多个 model

今天做到这个，记录一下。

解决的办法是。定义一个class：viewModel。把要显示的model放进去。

Controller：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using MvcService.Models;

namespace MvcService.Controllers
{
    public class viewModel
    {
        public List news { get; set; }
        public List categories { get; set; }

        public viewModel(List newsList, List categoriesList)
        {
            this.news = newsList;
            this.categories = categoriesList;
        }
    }

    public class HomeController : Controller
    {
        private ServiceEntities db = new ServiceEntities();

        public ActionResult Index()
        {
            var vm = new viewModel(db.News.ToList(), db.Categories.ToList());

            vm.news = (from n in db.News
                       where n.isDel == false && n.state == true
                       orderby n.createTime descending
                       select n).Take(16).ToList();

            vm.categories = (from n in db.Categories
                             where n.pId == 0 && n.isDel == false && n.state == true
                             select n).ToList();

            return View(vm);
        }
    }

View：

@using MvcService.Models
@model MvcService.Controllers.viewModel //引用HomeControllers中自定义的viewModel
@{
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_IndexLayout.cshtml";
}

    
热点问题
    

        @if (Model != null)
        {
            foreach (var n in Model.news)
            {
            
@(n.title.Length > 25 ? n.title.Substring(0, 25) + "..." : n.title) 
            }
        }
    
    





    @if (Model != null)
    {
        foreach (var c in Model.categories)
        {
        

            
@c.name
            

                会员信息 
                注册及登录
            
        
        }
    }

附上效果图.

还有一个问题，我想橙色的显示该类别的子类别。要怎么写。。大神指导下。。

我给出category的表结构。  pId = 0 代表的是父级菜单。

*************************************************12月24更新************************************************************

解决上面的问题，不过不用上面 viewModel 的办法了。
我们用ViewBag。在此之前，先新建一个class：Cate.cs，用来存放取出来的数据。
Cate.cs：

namespace MvcService.Models
{
    public class Cate
    {
        public string name { get; set; }  //1级 name
        public int[] id { get; set; }     //2级 id
        public string[] cname { get; set; }  //2级 name
    }
}

Controller：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using MvcService.Models;

namespace MvcServiceCenter.Controllers
{
    public class HomeController : Controller
    {
        private ServiceEntities db = new ServiceEntities();

        public ActionResult Index()
        {
            //热点
            ViewBag.redian = (from n in db.News where n.isDel == false && n.state == true
                              orderby n.aClick descending select n).Take(16).ToList();

            //栏目
            //ViewBag.lanmu = (from c in db.Categories where c.pId == 0 && c.isDel == false && c.state == true select c).ToList();
            List list = new List();
            var one = db.Categories.Where(a => a.pId == 0);    //取出第一级.
            foreach (var b in one)
            {
                Cate cate = new Cate();
                cate.name = b.name;  //保存第一级的name
                var two = db.Categories.Where(c => c.pId == b.id);  //取出第二级
                int[] id = new int[two.Count()];
                string[] ss = new string[two.Count()];
                int num = 0;
                foreach (var d in two)
                {
                    ss[num] = d.name;
                    id[num] = d.id;
                    num++;
                }
                cate.id = id;  //保存第二级的id
                cate.cname = ss;  //保存第二级的name
                list.Add(cate);  
            }
            ViewBag.lanmu = list;

            return View();
        }
    }
}

View：

@{
    ViewBag.Title = "首页";
    Layout = "~/Views/Shared/_IndexLayout.cshtml";
}

    
热点问题
    

        @if (ViewBag.redian != null)
        {
            foreach (var n in ViewBag.redian)
            {
            

                @(n.title.Length > 25 ? n.title.Substring(0, 25) + "..." : n.title)
            }
        }
    
    




    @if (ViewBag.lanmu != null)
    {
        foreach (var c in ViewBag.lanmu)
        {
        

            
@c.name
            

                @for (int i = 0; i < c.cname.Length; i++)
                {
                    @c.cname[i]
                }
            
        
        }
    }

图：