WPF Expander Templating - Display Content above ToggleButton
问题 I'm about to create a new Expander Control (learning purpose) by creating different templates but can't figure out what I'm doing wrong... ToggleButtonTemplate: <ToggleButton> <ToggleButton.Template> <ControlTemplate TargetType="ToggleButton"> <Border x:Name="eBB" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"> <Grid> <Path x:Name="Sign" Data="M 0,10 L 7.5,2.5 L 15, 10" Stroke="Black" Width="15"> <Path