Badge is Missing When a Control has a Custom Control Template

Updated on Sep 15, 2025

Environment

Product Version	2022.3.1109
Product	RadBadge for WPF

Description

RadBadge is not displayed when it is set on a control with custom control template.

Solution

The RadBadge control requires an AdornerLayer, in order to be displayed. When creating a custom ControlTemplate for a control, you could wrap the root element with an AdornerDecorator instance to apply an AdornerLayer onto its child elements in the visual tree.

Wrapping the root element of a ControlTemplate with an AdornerDecorator

XAML

    <Window.Template>
        <ControlTemplate TargetType="{x:Type Window}">
            <AdornerDecorator>
                <Grid x:Name="rootElement">
                    <!--ControlTemplate's structure-->
                </Grid>
            </AdornerDecorator>
        </ControlTemplate>
    </Window.Template>