ContextGrid.xaml

<DataGrid Grid.Row="1" x:Name="DataGrid" HorizontalAlignment="Left" VerticalAlignment="Top" ItemsSource="{Binding PersonDetails}">

            <!--<DataGrid.Resources>
                <local:OneReturnsTrueConverter x:Key="OneReturnsTrueConverter"/>
                <ContextMenu  x:Key="DataRowContextMenu">
                    <MenuItem x:Name="RowContMenuProp"  Header="Properties"
                  DataContext="{Binding Parent.PlacementTarget.Tag , RelativeSource={RelativeSource Self}}"
                  IsEnabled="{Binding Path=IsMarried, Converter={StaticResource OneReturnsTrueConverter}}" />
                </ContextMenu>
            </DataGrid.Resources>-->

            <DataGrid.Columns>
                <DataGridTextColumn Header="Name" Binding="{Binding Name}" />
                <DataGridTextColumn Header="Gender" Binding="{Binding Gender}"/>
                <DataGridTextColumn Header="DOB" Binding="{Binding DOB}"/>
                <DataGridTextColumn Header="Is Married" Binding="{Binding IsMarried}"/>
            </DataGrid.Columns>

            <DataGrid.ContextMenu>
                <ContextMenu ItemsSource="{Binding ContextMenus}" DisplayMemberPath="ActionName">
                    <ContextMenu.Style>
                        <Style TargetType="{x:Type ContextMenu}">
                            <Style.Triggers>
                                <DataTrigger Binding="{Binding Path=DataItem.IsMarried}" Value="true">
                                    <Setter Property="ContextMenu">
                                        <Setter.Value>
                                            <ContextMenu IsEnabled="False" Visibility="Hidden" />
                                        </Setter.Value>
                                    </Setter>
                                </DataTrigger>
                            </Style.Triggers>
                        </Style>
                    </ContextMenu.Style>
                </ContextMenu>
            </DataGrid.ContextMenu>

            <DataGrid.RowStyle>
                <Style TargetType="{x:Type DataGridRow}">
                    <!--<Setter Property="Tag" Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}}" />-->
                    <!--<Setter Property="ContextMenu" Value="{StaticResource DataRowContextMenu}" />-->
                    <Setter Property="BorderThickness" Value="0"/>
                </Style>
            </DataGrid.RowStyle>


        </DataGrid>