BUG: Missing Background styling in x:Type GridViewColumnHeader

The GridViewColumnHeader override the default style but not use the Background property in the Template. This prevents styling of the header's Background.

Please add the following:
Background={Template Binding Background}
to the HeaderBorder:
<Border Name="HeaderBorder" Padding="{TemplateBinding Padding}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
This solves the problem and allows Background changes to the GridViewColumnHeader.

Regards,
Christoph

定位 GridViewColumnHeader 的 XAML 模板，并检查 HeaderBorder 元素。在此处应用所请求的 Background 模板绑定，然后运行相关的项目测试或 UI 检查，以确认更改 GridViewColumnHeader.Background 会影响 header。