I have embedded a custom control in UnboundField and turned TwoWay binding, the result is that OnRecordUpdated is not triggered after value change, if I change UnboundField to Field then event is triggered.

Can anyone help on this ? :)how to make UnboundField trigger this event?

the whole source code is in attachment but the ~interesting part is as follows:

    <Window.Resources>
        <Style x:Key="MyTestTextCellPresenter"
TargetType="{x:Type igDP:CellValuePresenter}">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate 
TargetType="{x:Type igDP:CellValuePresenter}">
                        <Grid>
                            <TextBox 
Text="{Binding RelativeSource={RelativeSource TemplatedParent},
Path=Value, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>
 
    <Grid>
        <igDP:XamDataGrid x:Name="itemGrid"
DataSource="{Binding Source={x:Static MyTest:MainWindow.People}}" 
                          Margin="0,0,0,0" 
                          Background="Gray" 
                          Opacity="50"
                          InitializeRecord="OnInitializeRecord"
                          RecordUpdated="OnRecordUpdated"
                          >
            <igDP:XamDataGrid.FieldLayouts>
                <igDP:FieldLayout>
                    <igDP:FieldLayout.Fields>
                        <igDP:Field Name="Age"/>
                        <igDP:UnboundField Name="FamilyName"
                                           Label="MyTest">
                            <igDP:Field.Settings>
                                <igDP:FieldSettings 
CellValuePresenterStyle="{StaticResource MyTestTextCellPresenter}"
                                    />
                            </igDP:Field.Settings>
                        </igDP:UnboundField>
                        <igDP:Field Name="Name"/>
                    </igDP:FieldLayout.Fields>
                </igDP:FieldLayout>
            </igDP:XamDataGrid.FieldLayouts>
        </igDP:XamDataGrid>
    </Grid>