New Post: CellContentTemplate and bindind not working

hi, i have some questions :

1) is the FieldName property required for the Column ?

2) what the difference between Column and UnboundColumn

3) the databinding seems to have no effect inside CellContentTemplate

<xcdg:Column Width="90" FieldName="ID_ADHERANT"  >
                        <xcdg:Column.CellContentTemplate>
                            
                            <DataTemplate>

                                <TextBlock Width="90" Height="25" Text="{Binding ID_ADHERANT}"/>
                            </DataTemplate>
                        </xcdg:Column.CellContentTemplate>
                    </xcdg:Column>

i have checked that i don't have databinding errore in VS debugger

thanks and good day