I have a gridview were I define some columns, like this...

                        <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <TextBlock Text="{Binding MyProp}" />
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>

I bind my gridview to a collection and implemts INotifyPropertyChanged in the property MyProp. This works well and any changes of MyProp are reflected to the gridview.

If I add another column that is bound to the object itself I dont get any notifications/updates. My code...

                        <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <TextBlock Text="{Binding Converter={StaticResource myConverter}}"/>
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>

I think I need something like INotifyPropertyChanged for the object but I have no idea how to do this. Any suggestions?