public JsonResult GetActivities()
 {
     ActivityServices service = new ActivityServices();
     int loggedInUser =Convert.ToInt16(SessionManagement.GetValue("UserId"));
     if (loggedInUser > 0)
     {
         return Json(service.GetAllActivities(loggedInUser), JsonRequestBehavior.AllowGet);
     }
     else
     {
         return Json("", JsonRequestBehavior.AllowGet);
     }
 }