title: submit returns model as null in MVC 4
body: <p>I'm trying to send the data in the partial view to the controller on submit, but it is sent as null.</p>
  
  <p>here is the code of the view:</p>
  
  <pre><code>@model MvcApplication1.Models.mylist
  
  @{
      Layout = null;
  }
  
  &lt;!DOCTYPE html&gt;
  &lt;html&gt;
  &lt;head&gt;
      &lt;meta name="viewport" content="width=device-width" /&gt;
      &lt;title&gt;custlist&lt;/title&gt;
  &lt;/head&gt;
  &lt;body&gt;
      @using (Ajax.BeginForm("Submit", "Home", new AjaxOptions() {
          UpdateTargetId = "custlist" })) 
  
      {
          &lt;div&gt;
              &lt;p&gt;
                  @{Html.RenderPartial("el1", Model.Emplist);}
              &lt;/p&gt;
              &lt;p&gt;
                  @{Html.RenderPartial("clist", Model.Custlist);}
              &lt;/p&gt;
          &lt;/div&gt;
          &lt;input type="submit" value="Submit" /&gt;
      }
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>Controller code:</p>
  
  <p>This method is used to call the view with the model being passed</p>
  
  <pre><code>public ActionResult custlist()
          {
              List&lt;Employee&gt; Emplist = new List&lt;Employee&gt;() {
              new Employee(){ ID = "1", Name = "A"},
              new Employee(){ ID = "2", Name = "B"},
              new Employee(){ ID = "3", Name = "C"},
              };
              List&lt;Customer&gt; CustList = new List&lt;Customer&gt;() {
              new Customer(){ CustID = "1", CustName = "X"},
              new Customer(){ CustID = "2", CustName = "Y"},
              new Customer(){ CustID = "3", CustName = "Z"},
              };
              mylist m = new mylist();
              m.Emplist = Emplist;
              m.Custlist = CustList;
              return View(m);
          }
  </code></pre>
  
  <p>below method is getting called on submit, but the model object f is received as null.</p>
  
  <pre><code> [HttpPost]
      public ActionResult Submit(mylist f)
      {
          return View(f);
      }
  </code></pre>