CODEWITHSUNDEEP
asp.net-mvc-3namespacesviewmodel
River
River

Reputation: 1487

MVC3 ViewModel namespace Question

I am trying to create a ViewModel class. After I created class in "ViewModels" folder. My List type declaration are not recognized. My questions and code is below:

  1. Are there some special way of creating ViewModel Classes?
  2. Are ViewModels a methodology, rather than a feature in MVC3?

Can someone please tell me what I have missed thanks -P

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

namespace MvcApplication8.ViewModels
{
        //compiler does not recongize List class or SelectListitem
        private List<SelectListItem> _products = new List<SelectListItem>();

        //compiler does not recongize List class
        public List<SelectListItem> products
        {
            get { return _products; }
        }

}

Upvotes: 0

Views: 2330

Answers (2)

Juan Ayala
Juan Ayala

Reputation: 3528

  1. create a new empty MVC 3 project, using Razor.

  2. add a class definition under Models folder, i.e:

    namespace MvcApplication1.Models
{
    public class WhateverNameYouWantModel
    {
        public string Foo { get; set; }
        public string Bar { get; set; }
    }
}

  3. right click on Controllers folder and add a new controller. the name must end with "Controller". don't bother checking option to add action methods. the controller would look like this:

    using System.Web.Mvc;
using MvcApplication1.Models;

namespace MvcApplication1.Controllers
{
    public class HelloController : Controller
    {
        public ActionResult Index()
        {
            return View(new WhateverNameYouWantModel());
        }
    }
}

  4. right click on the Index() signature above and choose "Add View". Make sure nothing is checked, the view name matches the action name "Index" and Razor is the engine. add the model type at the top:

    @model MvcApplication1.Models.WhateverNameYouWantModel
@{
    Layout = null;
}
<!DOCTYPE html>
<html>
<head>
    <title>Index</title>
</head>
<body>
    <div>hello world!</div>
</body>
</html>

  5. set the mvc project as your startup project, press F5, the browser will open to http://localhost:xxxx now you will need to point to http://localhost:xxxx/Hello/Index

In asp.net mvc names are everything between the views, actions and controllers. Its all convention, you don't need to stick to it but if you don't you are gonna have to do some extra plumbing.

Upvotes: 2

RPM1984
RPM1984

Reputation: 73123

Are there some special way of creating ViewModel Classes?

No, create them like creating any other class. The convention is to place them in the Models folder.

Are ViewModels a methodology, rather than a feature in MVC3?

Kind of. They're not a feature of the framework itself, but a recommendation to keep your View's simple and clean, and simplify model binding.

Can someone please tell me what I have missed thanks

Where's your class declaration?

namespace MvcApplication8.ViewModels
{
   public class ThisIsTheClassNameAndMustGoFirst

Upvotes: 4

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