void ibtnDelete_Click(object sender, ImageClickEventArgs e) { for (int i = 0; i < trvCatalog.CheckedNodes.Count; i++) { int CatalogID = Convert.ToInt32(trvCatalog.CheckedNodes[i].Value); CatalogManager.DeleteLogical(CatalogID); } FillCatalogTree(); ExitMode(); upnlCatalogItem.Update(); } #endregion