Formal learning MVC 02

1、cookie

Continue to explain the built-in objects cookie MVC

Relatively insecure

 

1) Save cookie

      public ActionResult Index()
        {
            // set the cookie expiration time and 
            Response.Cookies.Add ( new new HttpCookie (name: " userId " )
            {
                Value = "128idn62dx",
                Expires = DateTime.Now.AddDays(3)
            });
            return Content("ok!");
        }

 

2) obtain cookie

        public ActionResult Index()
        {

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

 

3) remove the 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) is global

Settings application

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

 

3、Server

It contains a common method server

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

Path unchanged, content changes

.MapPath virtual path to physical path turn

 

2, the controller (Controller) and the view (view) of a data communication

Controller inside each method accessible

1) Controller => view

①ViewBag

Controller file

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

 

View file

1 @{
2     ViewBag.Title = "Index";
3 }
4 
5     <h2>App Page for DemoController</h2>
6     <!--访问Controller内数据-->
7 
8     <p>@ViewBag.Info</p>

 

②ViewData

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

@{
    ViewBag.Title = "Index";
}

    <h2>App Page for DemoController</h2>
    <! - access to data within the Controller ->

    <p>@ViewData["Name"]</p>

 

③TempData

Transfer data across a page can only be accessed once, and then will be cleared

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

 

@{
    ViewBag.Title = "Index";
}

    <h2>App Page for DemoController</h2>
    <! - access to data within the Controller ->

    <p>@TempData["token"]</p>

3 above are not the primary method of transmission of data

The main data transfer by the following method

④ Method transmitted through View

 

 

1 @{
2     ViewBag.Title = "Index";
3 }
4 
5 <h2>App Page for DemoController</h2>
6 <!--访问Controller内数据-->
7 
8 <p>@Model.Name</p>
9 <p>@Model.Sex</p>

 

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

ide can not be identified to prompt, declare

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

<h2>App Page for DemoController</h2>
<! - access to data within the Controller ->

<p>@Model.Name</p>
<p>@Model.Sex</p>

 Model to type in accordance with the method parameters View

Otherwise: specifies the page and the view parameter passing

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

 

@{
    Page.Title = "Show Title here";
    // Layout = "here shows your page layout";
}
@model MVCStudy.Models.Animal

<div>
    this iss ShowData page
</div>

<div> data from democontroller</div>

<p>@Model.Name</p>
<p>@Model.Sex</p>

 

Specify layout templates, the following mylayout located in the shared directory

    public ActionResult Index()
        { 
　　　　　　　// View name, page templates, data
             return View ( " ShowData " , masterName: " _MyLayout " , new new Animal ()
            {
                Name = "cat",
                Sex = "male"
            });
        }

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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