HOw to access the hidden value set in cshtml from controller?

Can i have something like this i开发者_运维技巧n my cshtml

@Html.hiddenfor(model => model.name , "passname")

In controller :

i want to access this modal.name which will be having the value i set i.e "passname"

2 ways:

1 - your model has to have this property that it can pass to HiddenFor. For example

class

class PageModel{
   public string HiddenFieldValue{get;set;}
   public string Name {get;set;}
}

in cshtml

@model PageModel
...
@Html.hiddenfor(model => model.name, model.HiddenFieldValue)

in controller

public ViewResult MyPage(){
    return View(new PageModel(){
        HiddenFieldValue = "Hello World!";
    });
}

2nd way: pass in through ViewBag/ViewData.

in controller

public ViewResult MyPage(){
    ViewBag.HiddenFieldValue = "Hello World!";
    return View();
}

in cshtml

@model PageModel
...
@Html.hiddenfor(model => model.name, ViewBag.HiddenFieldValue)

The value for the hidden field will be send together with all the other POST data (if your form uses a POST).

So you can:

1. Add a property "passname" to the model that you use to retrieve the data.
2. Create an argument named "passname" on the action that handles the post.
3. Add a FormCollection to the argement (on the action that handles the post), and retrieve the value from there.

4. Get it from the Request using Request.Form["passname"] or event Request["passname"]

   // Example 1
   
   public class MyModel {
      // other properties
   
      public string passname { get; set; }
   }
   
   public class MyController : Controller {
        [HttpPost]
        public ActionResult MyAction(MyModel data) {
        }
   }
   
   // Example 2
   
   public class MyController : Controller {
      [HttpPost]
      public ActionResult MyAction(string passname) {
      }
   }
   
   // Example 3
   
   public class MyController : Controller {
      [HttpPost]
      public ActionResult MyAction(FormCollection data) {
           var passname = data["passname"];
      }
   }
   
   // Example 4
   
   public class MyController : Controller {
      [HttpPost]
      public ActionResult MyAction() {
           var passname = Request.Form["passname"];
      }
   }