//private static Hy.Esri.Catalog.Define.CatalogHookHelper m_DefaultHookHelper = new Hy.Esri.Catalog.Define.CatalogHookHelper(); public override void OnCreate(object hook) { base.OnCreate(hook); m_HookHelper = base.m_Hook.Hook as Hy.Esri.Catalog.Define.CatalogHookHelper; //if (m_HookHelper == null) // m_HookHelper = m_DefaultHookHelper; }