<ListView.ItemContainerStyle>
                    <Style TargetType="{x:Type ListViewItem}"> 
                        <Style.Triggers> 
                            <Trigger Property="IsKeyboardFocusWithin" Value="True">
                                <Setter Property="IsSelected" Value="True" />
                            </Trigger>
                        </Style.Triggers>
                    </Style>
                </ListView.ItemContainerStyle>