Using ViewModels in ASP.NET MVC 2 - multiple forms

Question

I couldn't find any documentation around using multiple forms in an ASP.NET MVC 2 ViewModel approach.

i.e. In the built in application when you select New MVC2 web app, the register page uses a ViewPage which inherits like this:

Inherits="System.Web.Mvc.ViewPage<rs30UserWeb.Models.RegisterModel>"

I wanted to use that approach on a page with multiple forms, but that RegisterModel only supported one form.

Can you be a little bit more specific of why you need multiple ViewModels? There's a chance the new EditorFor is a more appropriate direction to go in? stackoverflow.com/questions/1235646/… — Roman
– Roman, Commented Mar 31, 2010 at 4:40
I have multiple forms on a single page. I'm using the ASP.NET MVC2 model validation approach. — Rob
– Rob, Commented Mar 31, 2010 at 4:42
That first link I added wasn't particularly helpful, this is better blogs.msdn.com/nunos/archive/2010/02/08/… — Roman
– Roman, Commented Mar 31, 2010 at 4:49

Mika Sundland · Accepted Answer · 2018-07-01 15:43:58Z

5

The approach is to use a composite viewmodel:

namespace MyApp.Models
{
    public class MyCompositePageModel
    {
        public RegisterModel registerModel;
        public LoginModel loginModel;
    }
}

When you do that, inherit the View from it:

<%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<rs30UserWeb.Models.RegisterModel>" %>

Then reference the individual models in the page:

<%= Html.TextBoxFor(m => m.loginModel.Email) %>
<%= Html.ValidationMessageFor(m => m.loginModel.Email) %>

Hope someone else finds this useful.

edited Jul 1, 2018 at 15:43

Mika Sundland

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answered Mar 31, 2010 at 4:44

Rob

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