title: Set HTML attributes on ASP.Net MVC 4 HTML Helpers?
body: <p>If I specify an HTML form element like a text field like so:</p>
  
  <pre><code>@Html.TextBox(m =&gt; m.UserName)
  </code></pre>
  
  <p>How can I add other standard HTML attributes to it, e.g. 'class', 'id', 'placeholder' etc...</p>