private void KircheElem_PropertyChanged(int id, PropertyChangedEventArgs e, object value)
{
if (inUndoCommand)
{
redoChangeLog.Record(new UpdateStep(id, e.PropertyName, value));
}
else if (inRedoCommand)
{
undoChangeLog.Record(new UpdateStep(id, e.PropertyName, value));
}
else
{
undoChangeLog.Record(new UpdateStep(id, e.PropertyName, value));
ResetRedoChangeLog();
undoCommand.InvokeCanExecuteChanged();
}
}