protected override void OnSaveSettings(RegistryKey key)
{
KeyTermsTree tree = MainPanelContent as KeyTermsTree;
if (tree != null && tree.SelectedNode != null && tree.SelectedNode.Tag != null &&
tree.SelectedNode.Tag is IChkTerm)
{
key.SetValue("SelectedKeyTerm", ((IChkTerm)tree.SelectedNode.Tag).Guid);
}
base.OnSaveSettings(key);
}