title: MVC 5 Html.ValidationSummary is not showing error
body: <p>I am manually adding the following Model Error in my controller,</p>
  
  <pre><code>ModelState.AddModelError(string.Empty, "An error occurred");
  </code></pre>
  
  <p>However when the view is loaded, the <code>@Html.ValidationSummary(true)</code> is not showing any errors.</p>
  
  <p>I have also tried <code>@Html.ValidationSummary(false)</code>.</p>
  
  <p>I have read many articles on this behavior and I have tried all the suggestions with no luck.</p>
  
  <p>Any suggestions are greatly appreciated!</p>