/// <summary>
        /// Loads the ViewStationeryCatalogue form
        /// </summary>  
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Page_Load(object sender, System.EventArgs e)
        {
            if (!IsPostBack)
            {
                MasterPage.setCurrentPage(this);

                vsCtrl = new ViewStationeryCatalogueControl();

                FillStationeryList();
                FillItems();

                StationeryStoreInventorySystemController.Util.PutSession(sessionKey, vsCtrl);
            }
            else
            {
                vsCtrl = (ViewStationeryCatalogueControl)StationeryStoreInventorySystemController.Util.GetSession(sessionKey);
            }
        }
 private ViewStationeryCatalogueControl getControl()
 {
     if (vsCtrl == null)
         vsCtrl = new ViewStationeryCatalogueControl();
     return vsCtrl;
 }