Problem implementing INotifyPropertyChanged

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VB

WPF

Hi everyone!

I have been looking at my code for so long that I cannot longer see what is wrong with it.

I have a class Survey that implements INotifyPropertyChanged. There are two properties relevant to my question, TotalPoints and TotalAdjustedPoints:

Public Property TotalPoints() As Long
      Get
          TotalPoints = lTotalPoints
      End Get
      Set(ByVal value As Long)
          If value <> lTotalPoints Then
              Me.lTotalPoints = value
              NotifyPropertyChanged("TotalPoints")
          End If
      End Set
  End Property

  Public Property TotalAdjustedPoints() As Long
      Get
          TotalAdjustedPoints = lTotalAdjustedPoints
      End Get
      Set(ByVal value As Long)
          If value <> lTotalAdjustedPoints Then
              Me.lTotalAdjustedPoints = value
              NotifyPropertyChanged("TotalAdjustedPoints")
          End If
      End Set
  End Property

I have an ObservableCollection of Survey instances that is used as ItemsSource for a list view. The listview is defined in XAML, like this:

<ListView Name="lvSurveyManagement" Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="4" Margin="5,5,5,5">
    <ListView.View>
        <GridView>
            <GridViewColumn  x:Name="colSurveyGUID"  Width="300" DisplayMemberBinding="{Binding Path=SurveyGUID}"/>
            <GridViewColumn  x:Name="colSurveyLineGUID"  Width="100" DisplayMemberBinding="{Binding Path=LineGUID}"/>
            <GridViewColumn  x:Name="colSurveyType"  Width="100" DisplayMemberBinding="{Binding Path=SurveyType}"/>
            <GridViewColumn  x:Name="colLoadedPoints"  Width="122" DisplayMemberBinding="{Binding Path=TotalPoints}"/>
            <GridViewColumn  x:Name="colAdjustedPoints"  Width="122" DisplayMemberBinding="{Binding Path=TotalAdjustedPoints}"/>
        </GridView>
    </ListView.View>
</ListView>

When I update the above mentioned properties for a Survey object belonging to the ObservableCOllection, the change in TotalAdjustedPoints is reflected in the listview, but the change in TotalPoints is not.

I honestly don't see what I am doing wrong, hope someone here can help me. Thank you in advance.