public override void edit()
        {
            KategorieViewModel id = new KategorieViewModel(false);

            if (WybranaKategoria != null)
            {
                id.WybranaKategoriaId = WybranaKategoria.K_IGKId;
                Messenger.Default.Send(id);
            }
        }
        private void AllCategories(bool x)
        {
            KategorieViewModel workspace =
                this.Workspaces.FirstOrDefault(vm => vm is KategorieViewModel)
                as KategorieViewModel;

            if (workspace == null)
            {
                workspace = new KategorieViewModel(x);
                this.Workspaces.Add(workspace);
            }

            this.SetActiveWorkspace(workspace);
        }
 private void editKategoria(KategorieViewModel id)
 {
     this.CreateView(new KategoriaEditViewModel(id.WybranaKategoriaId));
 }