title: No value for the dropdownlist when my form is submitted
body: <p>I try to use a dropdownlist in my view for showing a list of authors (users). I'm able to populate this dropdown and see the content in my view. When submitting my form, I debug my action in my controller and when inspecting my model, the value of the field associated with my dropdown is null.</p>
  
  <p>Here is my action controller (before showing my view):</p>
  
  <pre><code>    public ActionResult Create()
      {
          IEnumerable&lt;User&gt; authors = m_AccountBusiness.GetAllUsers();
  
          PageCreateViewModel viewModel = new PageCreateViewModel
          {
              PageToCreate = new PageFullViewModel(),
              Authors = authors.Select(x =&gt; new SelectListItem { Text = x.UserName, Value = x.UserID.ToString() })
          };
  
          return View(viewModel);
      }
  </code></pre>
  
  <p>Here is (a portion of) my view:</p>
  
  <pre><code>@model MyBlog.ViewModels.PageCreateViewModel
  
  &lt;h3&gt;Create&lt;/h3&gt;
  
  @using (Html.BeginForm())
  {
  
  @Html.ValidationSummary(true)
  @Html.HiddenFor(model =&gt; model.PageToCreate.PageID)
  
  &lt;div class="editor-label"&gt;
      @Html.LabelFor(model =&gt; model.PageToCreate.Title)
  &lt;/div&gt;
  &lt;div class="editor-field"&gt;
      @Html.TextBoxFor(model =&gt; model.PageToCreate.Title, new { @class = "titleValue" })
      @Html.ValidationMessageFor(model =&gt; model.PageToCreate.Title)
  &lt;/div&gt;
  
  &lt;div class="editor-label"&gt;  
      @Html.LabelFor(model =&gt; model.PageToCreate.Author)
  &lt;/div&gt;
  &lt;div class="editor-field"&gt;      
      @Html.DropDownListFor(model =&gt; model.PageToCreate.Author, Model.Authors, "Please select...")    
  &lt;/div&gt;
  </code></pre>
  
  <p>Here is my PageCreateViewModel:</p>
  
  <pre><code>public class PageCreateViewModel
  {
      public PageFullViewModel PageToCreate { get; set; }
      public IEnumerable&lt;SelectListItem&gt; Authors { get; set; }
  }
  </code></pre>
  
  <p>Any idea?</p>
  
  <p>Thanks.</p>