How do I return an integer to a View in ASP.NET MVC?

Question

In the following code I'm trying to return a view with an integer as its type. The code below doesn't work. What am I missing?

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

namespace MvcApplication5.Controllers
{
    public class HomeController : Controller
    {

        public ActionResult Index(int answer)
        {


           int row = 2;
           int col = 1; 

           answer = row * col ; 
           return View(answer);
        }

    }
}

What, exactly, is the error you are getting? This could be caused by a number of things depending on how you have the routes configured in your application as where your View is located/how your view is defined. — Justin Niessner
– Justin Niessner, Commented Mar 10, 2011 at 18:25
What is the error you are getting? Are you getting the error when you compile, or when you try view the page? Do you have a view file called Index.aspx in your views folder? — JonoW
– JonoW, Commented Mar 10, 2011 at 18:26

Darin Dimitrov · Accepted Answer · 2011-03-10 18:39:35Z

4

public ActionResult Index(int answer)
{
    int row = 2;
    int col = 1; 
    int answer = row * col ; 
    return View(answer);
}

and then ensure your view is strongly typed to int:

<%@ Page 
    Language="C#" 
    MasterPageFile="~/Views/Shared/Site.Master" 
    Inherits="System.Web.Mvc.ViewPage<int>" 
%>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
    The answer is: <em><%= Html.DisplayForModel() %></em>
</asp:Content>

answered Mar 10, 2011 at 18:39

Darin Dimitrov

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3 Comments

software Over a year ago

i am using mvc empty webapplication. i dont have anything in my views. can you tell me how can i get ~/Views/Shared/Site.Master" . what is the master page here?

software Over a year ago

Inherits="System.Web.Mvc.ViewPage<int> what is the int means?

Darin Dimitrov Over a year ago

@software, it indicates that this View inherits from the generic System.Web.Mvc.ViewPage<int> type where int indicates the type of your model (it is the type you are passing when returning the view return View(answer), answer is int)

smartcaveman · Accepted Answer · 2011-03-10 18:30:42Z

0

There is nothing wrong with the code you posted.

The error must be related to something else.

If you want to know the cause of the error it would help to indicate what error you are receiving, as well as stack information.

answered Mar 10, 2011 at 18:30

smartcaveman

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Comments

John Bledsoe · Accepted Answer · 2011-03-10 18:33:24Z

0

You're likely requesting the action URL without specifying an answer parameter. Change your method signature to the following and it should all work:

public ActionResult Index()

answered Mar 10, 2011 at 18:33

John Bledsoe

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2 Comments

software Over a year ago

it tried the way you said. the coding works (break point , f11) but it gives different error again..Server Error in '/' Application. The view 'Index' or its master was not found. The following locations were searched: ~/Views/Home/Index.aspx ~/Views/Home/Index.ascx ~/Views/Shared/Index.aspx ~/Views/Shared/Index.ascx

John Bledsoe Over a year ago

Okay, you're going to need a tutorial on ASP.NET MVC. I suggest you download the Nerd Dinner tutorial (nerddinnerbook.s3.amazonaws.com/Intro.htm) and complete it before proceeding.

Kim Tranjan · Accepted Answer · 2011-03-10 18:43:27Z

0

As I can see, you're trying to open the URL http://localhost:8080/Home/Index and the problem is that the action "Index" have a parameter called answer.

Try to call http://localhost:8080/Home/Index?answer=10 and you'll see that it will work.

edit:

as Darin said, make sure that the Index.aspx exists.

answered Mar 10, 2011 at 18:43

Kim Tranjan

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