title: When wouldn't view return id to controller?
body: <p>I have an ASP.NET MVC project, I generate a webpage with checkboxes and button sends id and viewmodel to controller. So far everything works except for one client. I get entire list of checkboxes but when sending data to controller, I get an error</p>
  <blockquote>
  <p>NullReferenceException: Object reference not set to an instance of an object</p>
  </blockquote>
  <p>The <code>ID</code> is correct and exists in database. In what condition wouldn't view send data to controller?</p>
  <p>UPDATE: The problem occurs, when viewmodel has a long list of products.</p>