如何更改WPF ListView上项目焦点矩形的颜色？ （不是项目突出显示的颜色）

Question

How do I change the color of the item focus rectangle on a WPF ListView?

It's the color of the focus rectangle I mean to change, not the color of the selected item (which is green).

See image:

Answer 1

To change the appearance of the focus visual of an item in the ListView , you will have to manipulate the FocusVisualStyle that is part of the ItemContainerStyle used by the ListView .

To illustrate, here is a simple example that turns the focus visual into a red dashed (dotted line) rectangle:

<ListView ...>
    <ListView.ItemContainerStyle>

        <!-- This is the style used by the item container of this ListView -->
        <Style TargetType="ListViewItem">
            <Setter Property="FocusVisualStyle">
                <Setter.Value>

                    <!-- This is the style for the focus visual -->
                    <Style>
                        <Setter Property="Control.Template">
                            <Setter.Value>
                                <ControlTemplate>
                                    <Rectangle SnapsToDevicePixels="true"
                                               Stroke="Red"
                                               StrokeThickness="1"
                                               StrokeDashArray="1 2"/>
                                </ControlTemplate>
                            </Setter.Value>
                        </Setter>
                    </Style>

                </Setter.Value>
            </Setter>
        </Style>

    </ListView.ItemContainerStyle>
</ListView>