/// <summary>
 /// This method will call the Event resource method to get the all event invitation 
 /// categories for passed tributetype
 /// </summary>
 /// <param name="tributeType">TributeType</param>
 /// <returns>list of objects having EventInvitationCategory information</returns>
 public IList<EventInvitationCategory> EventInvitationCategories(string tributeType)
 {
     IList<EventInvitationCategory> objEventInvitationCategoryList = null;
     try
     {
         EventResource objEventRes = new EventResource();
         objEventInvitationCategoryList = objEventRes.EventInvitationCategories(tributeType);
     }
     catch (Exception ex)
     {
         throw ex;
     }
     return objEventInvitationCategoryList;
 }