ThanksAlex

                   I have done it. actually i was making a mistake in accessing nestedobject which I solved by this ' Path=Value.xyz'

Thanks For replying well i am trying to make a control template as given below in which i want to bind two nested objects with a single filed of xamdatagrid.

<igDP:UnboundField.Settings>
                                            <igDP:FieldSettings AllowResize="True">
                                                <igDP:FieldSettings.CellValuePresenterStyle>
                                                    <Style TargetType="{x:Type igDP:CellValuePresenter}" >
                                                        <Setter Property="Template">

                                                            <Setter.Value>

                                                                <ControlTemplate TargetType="{x:Type igDP:CellValuePresenter}">
                                                                    <StackPanel Orientation="Horizontal">                                                                        <TextBlock Text="{Binding RelativeSource={RelativeSource TemplatedParent},Path=FinishingPosition}" />
<TextBlock Text="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Value }"/>
                                               

                                                                    </StackPanel>
                                                                   
                                                                </ControlTemplate>
                                                            </Setter.Value>
                                                        </Setter>
                                                    </Style>
                                                </igDP:FieldSettings.CellValuePresenterStyle>
                                            </igDP:FieldSettings>
                                        </igDP:UnboundField.Settings>

 well i am getting problem in binding of data.is there any mistake in my syntax or its not posible to bind in such a way.

thanks.