MVC的传递数据的方法

1、使用ViewBag

 1         #region 0.2 Action方法 + ActionResult Index2()
 2         /// <summary>
 3         /// Action方法
 4         /// </summary>
 5         /// <returns></returns>
 6         public ActionResult Index2()
 7         {
 8             System.Text.StringBuilder sbhtml = new System.Text.StringBuilder();
 9             List<Models.dog> list = InitData();
10             list.ForEach(d =>
11             {
12                 sbhtml.AppendLine("<div>" + d.ToString() + "</div>");
13             });
14 
15             ViewBag.HtmlStr = sbhtml.ToString();
16 
17             return View();
18         } 
19         #endregion

View Code

Index2.cshtml

@{Layout = null;
}<!DOCTYPE html><html>
<head><meta name="viewport" content="width=device-width" /><title>Index</title>
</head>
<body>@Html.Raw(ViewBag.HtmlStr)</body>
</html>

View Code

2、使用ViewData

 1         #region 0.3 查询文章列表 + ActionResult Index3()
 2         /// <summary>
 3         /// 查询 文章 列表
 4         /// </summary>
 5         /// <returns></returns>
 6         OumindBlogEntities db = new OumindBlogEntities();
 7 
 8         public ActionResult Index3()
 9         {
10             List<Models.BlogArticle> list = (from d in db.BlogArticles where d.AIsDel == false select d).ToList();
11 
12             ViewData["DataList"] = list;
13             return View();
14         } 
15         #endregion

View Code

Index3.cshtml

@using MvcLewisTest.Models;
@{Layout = null;
}<!DOCTYPE html><html>
<head><meta name="viewport" content="width=device-width" /><title>Index</title><style type="text/css">#tbList{border:1px solid #0094ff;border-collapse:collapse;margin:10px auto;width:800px;}#tbList th,td{border:1px solid #0094ff;padding:10px;}</style><script type="text/javascript">function del(Aid) {if (confirm("确定要删除吗？"))window.location = "/Home/Del/" + Aid; }</script>
</head>
<body><table id="tbList"><tr>              <th>id</th><th>标题</th><th>分类</th><th>状态</th><th>时间</th><th>操作</th></tr>@foreach (BlogArticle a in ViewData["DataList"] as List<BlogArticle>) {<tr>              <td>@a.AId</td><td>@a.ATitle</td><td>@a.BlogArticleCate.Name</td><td>@a.Enumeration.e_cname</td><td>@a.AAddtime</td><td><a href="javascript:del(@a.AId)">删</a><a href="/Home/Modify/@a.AId">改</a></td></tr>}</table>
</body>
</html>

View Code

3、使用Control器的 return View()

 1         #region 0.5 显示要修改数据（根据Id) +  ActionResult Modify(int id)
 2         [HttpGet]
 3         /// <summary>
 4         /// 显示要修改的数据
 5         /// </summary>
 6         /// <param name="id"></param>
 7         /// <returns></returns>
 8         public ActionResult Modify(int id)
 9         {
10             //1.根据id查询出要修改的对象
11             BlogArticle art = (from a in db.BlogArticles where a.AId == id select a).FirstOrDefault();
12             //2.生产文章分类下来框
13             IEnumerable<SelectListItem> listItem = (from c in db.BlogArticleCates
14                                          where c.IsDel == false select c).ToList()
15                                          .Select(c => new SelectListItem { Value = c.Id.ToString(), Text = c.Name });
16             //3.将生成的文章分类 下拉框集合 设置给ViewBag
17             ViewBag.CateList = listItem;
18             //4.加载视图，使用View构造函数，将数据传给视图上Model属性
19             return View(art);
20         } 
21         #endregion