how to sort ObservableCollection

Question

I have a an ObservableCollection and a WPF UserControl is Databound to it. The Control is a graph that shows a vertical bar for each item of type BarData in the ObservableCo

Answer 1

Also using LINQ/Extensionmethod one can aviod firing the NotifyPropertyChanged Event by not setting the source col to the sorted one, but clear the original and add the items of the sorted one. (this will continue fire the Collectionchanged Event, if implemented).

Public Sub SortByProp(Of T)(ByRef c As ICollection(Of T), PropertyName As String)
    Dim l = c.ToList
    Dim sorted = l.OrderBy(Function(x) x.GetType.GetProperty(PropertyName).GetValue(x))

    c.Clear()
    For Each i In sorted
        c.Add(i)
    Next

End Sub