private void delBtn_Click(object sender, EventArgs e)
        {
            if (objectViewer.SelectedNode.Level == 1)
                for (int i = 0; i < objects.Count; i++)
                    if (objects[i].ContainsKey(objectViewer.SelectedNode.Parent.Name))
                    {
                        objects[i].Remove(objectViewer.SelectedNode.Name + ": " + objects[i][objectViewer.SelectedNode.Name].ToString());
                        objects.Remove(objects[i]);
                    }
        }