Problems Passing ViewModel with data from View to Controller - asp.net-mvc

Question

Ok, here is my problem. I am trying to pass a view model of mine, which has multiple list in it, to my view. Then in my view i need to edit the different list. Then on my post i need to save the edits. Although, when i pass my viewmodel back to my post, it is empty! Can somebody explain what i am doing wrong? i am not worried about saving the information right now, i am just worried about getting the data back to the controller. The ViewModel is null when i hit that portion.
Controller
public ActionResult ManageNewsArticles()
{
NewsViewModel newsViewModel = new NewsViewModel();
newsViewModel.ListBreakingNews = db.NewsArticles.Where(n => n.PageSetupID == 1).ToList<NewsArticle>();
newsViewModel.ListMainArticle = db.NewsArticles.Where(n => n.PageSetupID == 2).ToList<NewsArticle>();
newsViewModel.ListSubNews1 = db.NewsArticles.Where(n => n.PageSetupID == 3).ToList<NewsArticle>();
newsViewModel.ListSubNews2 = db.NewsArticles.Where(n => n.PageSetupID == 4).ToList<NewsArticle>();
newsViewModel.ListSubNews3 = db.NewsArticles.Where(n => n.PageSetupID == 5).ToList<NewsArticle>();
return View(newsViewModel);
}
[HttpPost]
public ActionResult ManageNewsArticles(NewsViewModel newsViewModel)
{
if (ModelState.IsValid)
{
db.SaveChanges();
return RedirectToAction("Admin");
}
return View(newsViewModel);
}
here is my View
<%# Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<TrueNews.ViewModels.NewsViewModel>" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
Manage News Articles
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h2>Manage News Articles</h2>
<% Html.EnableClientValidation(); %>
<% using (Html.BeginForm(Model)) {%>
<%: Html.ValidationSummary(true) %>
<fieldset>
<%: Html.EditorForModel(Model) %>
<p>
<input type="submit" value="Save" />
</p>
</fieldset>
<% } %>
<div>
<%: Html.ActionLink("Back to Admin Controls", "Admin") %>
</div>
</asp:Content>
NewsViewModel
public class NewsViewModel
{
public List<NewsArticle> ListBreakingNews { get; set; }
public List<NewsArticle> ListMainArticle { get; set; }
public List<NewsArticle> ListSubNews1 { get; set; }
public List<NewsArticle> ListSubNews2 { get; set; }
public List<NewsArticle> ListSubNews3 { get; set; }
} // End of Class

Answer 1

I couldn't get your view to display correctly using the EditorForModel syntax, however I did replicate your problem and found this article which provides one way of solving it:
http://weblogs.asp.net/nmarun/archive/2010/03/13/asp-net-mvc-2-model-binding-for-a-collection.aspx
I created a quick table NewsArticle containing Id and Stuff columns and then had the following form in the view:
<% using (Html.BeginForm())
{%>
<%: Html.ValidationSummary(true) %>
<fieldset>
<% for (int i = 0; i < Model.ListBreakingNews.Count; i++)
{ %>
<div>
Id</div>
<div>
<%= Html.TextBox(string.Format("ListBreakingNews[{0}].Id", i), Model.ListBreakingNews[i].Id) %>
</div>
<div>
Name</div>
<div>
<%= Html.TextBox(string.Format("ListBreakingNews[{0}].Stuff", i), Model.ListBreakingNews[i].Stuff) %>
</div>
<% } %>
<p>
<input type="submit" value="Save" />
</p>
</fieldset>
<% } %>
and the items in the list were passed when posted. I also found that previously you had Html.BeginForm(Model) which when I added it caused nothing to be passed through in the view model - I am only a newbie to MVC so I don't know why this happens but my code below worked only with Html.BeginForm() and not Html.BeginForm(Model).
I hope this helps.