ASP.net mvc EntityCollection is null when saving - asp.net-mvc

Question

I've been trying to figure this out for over a day now but I just can't get this to work.
I have an asp.net MVC website which uses the entityframework for its datamodel.
I need to be able to edit a complex Release entity which contains a List<ReleaseDescription>
I have the following model (Apparantly I cannot upload pictures so I'll just type it out):
public class Release
{
public string Version
..some other primitive properties
public EntityCollection<ReleaseDescription>
}
public class ReleaseDescription
{
public string Description
public Language Language
}
public class Language
{
public string ISOCode
public string Description
}
When looking for a solution for this problem on the web. I found out that using an EntityCollection (see list Release.ReleaseDescription) is not a good idea so in the partial class Release I made an extra property ReleaseDescriptionList which transforms this entityCollection into a List<ReleaseDescription> through the getter, it has no setter.
The problem is that, when saving, my release.ReleaseDescription or even the release.ReleaseDescriptionList is always empty when items should be in it.
Here follows the rest of my code:
My Edit.aspx code looks like this
<%# Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Server.DM.Release>" %>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h2>Edit</h2>
<% using (Html.BeginForm()) {%>
<%: Html.ValidationSummary(true) %>
... (Code for the primitive properties (works all fine)
<fieldset>
<legend>Descriptions</legend>
<% for(var i =0; i<Model.ListReleaseDescriptions.Count; i++)
{%>
<%: Html.EditorFor(x => Model.ListReleaseDescriptions[i], "ReleaseDescriptionRow")%>
<%} %>
<%= Html.ActionLink("Add another...", "AddDescription", Model) %>
</fieldset>
<p>
<input type="submit" value="Save" />
</p>
<% } %>
<div>
<%: Html.ActionLink("Back to List", "Index") %>
</div>
</asp:Content>
The asp code in the DescriptionRelease looks like this:
<%# Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<Server.DM.ReleaseDescription>" %>Language: <%= Html.TextBoxFor(x => x.Language.ISOCode) %>Qty: <%=Html.TextBoxFor(x => x.Description)%>
(I couldn't get above codeblock on multiple lines sorry)
When I click the save button in the edit screen and I get to my ActionController
[HttpPost]
public ActionResult Edit(Release release)
release.DescriptionRelease does not contain any data when 3 items should be in it.
Any help is appreciated in resolving this issue!
(ps: yes I know there are similar threads on this forum and others but none of it seems to work for me.)

Answer 1

OK, After a lot of searching I finally found an answer for my problem.
I already made an extra property to make up for the EntityCollection but it looked like this:
public IList<ReleaseDescription> ListReleaseDescription
{
get
{
return ReleaseDescription.ToList();
}
}
That didn't work so I made a simple property out of it like so:
public IList<ReleaseDescription> ListReleaseDescription{get; set;}
and I populated this property in my controller. This finally fixed my problem and I got all the data back when saving! I can't believe I wasted 1,5 days on this when the solution was this simple.