Re-sort WPF DataGrid after bounded Data has changed

Question

I am looking for a way to re-sort my DataGrid when the underlying data has changed.

(The setting is quite standard: Th

Answer 1

For anyone else having this problem, this may get you started... If you have a collection of INotifyPropertyChanged items, you can use this instead of ObservableCollection - it will refresh when individual items in the collection change: note: since this flags the items as removed then readded (even though they aren't actually removed and added,) selections may get out of sync. It's good enough for my small personal projects, but it's not ready to release to customers...

public class ObservableCollection2 : ObservableCollection
{
    public ObservableCollection2()
    {
        this.CollectionChanged += ObservableCollection2_CollectionChanged;
    }

    void ObservableCollection2_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
    {
        if (e.OldItems != null)
            foreach (object o in e.OldItems)
                remove(o);
        if (e.NewItems != null)
            foreach (object o in e.NewItems)
                add(o);
    }
    void add(object o)
    {
        INotifyPropertyChanged ipc = o as INotifyPropertyChanged;
        if(ipc!=null)
            ipc.PropertyChanged += Ipc_PropertyChanged;
    }
    void remove(object o)
    {
        INotifyPropertyChanged ipc = o as INotifyPropertyChanged;
        if (ipc != null)
            ipc.PropertyChanged -= Ipc_PropertyChanged;
    }
    void Ipc_PropertyChanged(object sender, PropertyChangedEventArgs e)
    {
        NotifyCollectionChangedEventArgs f;

        f = new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, sender);
        base.OnCollectionChanged(f);
        f = new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, sender);
        base.OnCollectionChanged(f);
    }
}