/// <summary>
 /// Gets default URL based on current action, controller and area.
 /// </summary>
 /// <param name="urlHelper"></param>
 /// <param name="viewData"></param>
 /// <returns></returns>
 public static string GetDefaultUrl(this IUrlHelper urlHelper, ViewDataDictionary viewData)
 {
     return(urlHelper.Action(viewData.GetAction(), viewData.GetController(), new { Area = viewData.GetArea() }));
 }