public void OnBarDimensionsChanged()
{
BarObservableCollection <Dimensions> dimension = new BarObservableCollection <Dimensions>();
dimension.Add(this.Dimensions);
dimension.ChildElementPropertyChanged += new
BarObservableCollection <Dimensions> .ChildElementPropertyChangedEventHandler(dimension_DimensionsChanged);
}
void dimension_DimensionsChanged(BarObservableCollection <Dimensions> .ChildElementPropertyChangedEventArgs e)
{
RecreateChildren();
}