public JsonResult Create(DeviceModel model)
 {
     try
     {
         int id = ((UserSessionModel)this.HttpContext.Session["user"]).Id;
         DeviceManagement objDevceManager = new DeviceManagement(id);
         objDevceManager.CreateDevice(model);
         return(Json(true));
     }
     catch
     {
         return(Json(false));
     }
 }