title: Can we use Htmlhelper class in controller?
body: <p>I am working on web api project, we have one htmlhelper class, where I see declarations that look like:</p>
  
  <pre><code> public static string GetCountryDomain(this System.Web.Mvc.HtmlHelper htmlHelper, Area area)
                       {
                           //body
                       }
  </code></pre>
  
  <p>Can I use method declared in helper class in my api method?
  If Yes, then can someone explain how can I call that method from my controller?</p>
  
  <p>Consider following example, wherein am calling method declared in helper from my controller.</p>
  
  <pre><code>HtmlHelper.GetCountryDomain(area_id);
  </code></pre>
  
  <p>can someone explain what first parameter I need to pass in order to call above method of HtmlHelper class?</p>