Document thisDoc =tempData.Application.ActiveUIDocument.Document;
            Settings thisDocSetting = thisDoc.Settings;
            Categories thisCataGroup = thisDocSetting.Categories;
            sizeText.Text =thisCataGroup.Size.ToString();
            foreach(Category catalName in thisCataGroup)
            {
                myListbox.Items.Add(catalName.Name);
                
            }
            myListbox.Items.Refresh();