正式学习MVC 02

1、cookie

继续讲解MVC的内置对象cookie

相对不安全

 

1)保存cookie

      public ActionResult Index()
        {
            // 设置cookie以及过期时间
            Response.Cookies.Add(new HttpCookie(name: "userId")
            {
                Value = "128idn62dx",
                Expires = DateTime.Now.AddDays(3)
            });
            return Content("ok!");
        }

 

2) 获取cookie

        public ActionResult Index()
        {

            return Content(Request.Cookies["userId"].Value);
        }

 

3)移除cookie

1      public ActionResult Index()
2         {
3             // 设置cookie以及过期时间
4             Response.Cookies.Add(new HttpCookie(name: "userId")
5             {
6                 Expires = DateTime.Now.AddDays(-1)
7             });
8             return Content("ok!");
9         }

 

2、Application

1) 是全局的

设置application

1         public ActionResult Index()
2         {
3             HttpContext.Application["user"] = "Linda";
4             return Content(HttpContext.Application["user"].ToString());
5         }

 

3、Server

包含了服务器的常用方法

      public ActionResult Index()
        {
            Server.Transfer(path: "html页地址");
            return Content("ok");
        }

路径不变,内容改变

.MapPath  虚拟路径转物理路径

 

2、控制器(controller)与视图(view)的数据通信

Controller里面每个方法都可供访问

1) Controller => view

①ViewBag

控制器文件

1        public ActionResult Index()
2         {
3             ViewBag.Info = "info from Controller";
4             return View();
5         }

 

视图文件

1 @{
2     ViewBag.Title = "Index";
3 }
4 
5     <h2>App Page for DemoControllerh2>
6     
7 
8     <p>@ViewBag.Infop>

 

②ViewData

        public ActionResult Index()
        {
            ViewData["Name"] = "fiona";
            return View();
        }
@{
    ViewBag.Title = "Index";
}

    

App Page for DemoController

@ViewData["Name"]

 

③TempData

可跨页面传递数据,仅能被访问一次,之后会被清除

        public ActionResult Index()
        {
            TempData["token"] = "23vf5c";
            return View();
        }

 

@{
    ViewBag.Title = "Index";
}

    

App Page for DemoController

@TempData["token"]

上面3中方法传递的都是不主要的数据

主要的数据通过下面的方法传递

④通过View方法传递

 

 

1 @{
2     ViewBag.Title = "Index";
3 }
4 
5 <h2>App Page for DemoControllerh2>
6 
7 
8 <p>@Model.Namep>
9 <p>@Model.Sexp>

 

1         public ActionResult Index()
2         {
3             return View(new Animal()
4             {
5                 Name = "cat",
6                 Sex = "male"
7             });
8         }

ide不能进行识别来提示,可声明

@{
    ViewBag.Title = "Index";
}
@model MVCStudy.Models.Animal

App Page for DemoController

@Model.Name

@Model.Sex

 Model内的类型要与View方法参数内的一致

其它方式:指定视图页并传参

        public ActionResult Index()
        {
            return View("ShowData",new Animal()
            {
                Name = "cat",
                Sex = "male"
            });
        }

 

@{
    Page.Title = "此处显示标题";
    //Layout = "此处显示你的布局页";
}
@model MVCStudy.Models.Animal

<div>
    this iss ShowData page
div>

<div> data from democontrollerdiv>

<p>@Model.Namep>
<p>@Model.Sexp>

 

同时指定布局模板,下面的mylayout位于shared目录下

    public ActionResult Index()
        {
       // 视图名,模板页,数据
return View("ShowData",masterName:"_MyLayout",new Animal() { Name = "cat", Sex = "male" }); }

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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