Chart won't refresh after OnPropertyChanged

[faezridzal]

Hi,

I'm using the MVVM pattern with the XAML binding as follows:

AxisX>

---

class ChartViewModel

{

private ObservableCollection _strategyList;

public ObservableCollection StrategyList {get{return _strategyList}}

public ChartViewModel() {

foreach (strategy in _strategyList) strategy.PropertyChanged += delegate {OnPropertyChanged("StrategyList")};

...

}

class StrategyViewModel

{

public string Name {get;set;}

public ObservableCollection Points

...

So the XAML will list down the first level collection as series and then plot the curve for each series. The problem is, when I make changes to Points, it doesn't get updated. Anyone can help?