WPF comes with the standard Windows themes on all Windows versions. For example, you can have the Aero theme (which Vista and Windows 7 use) on Windows XP with the following steps:
- Add PresentationFramework.Aero to your application’s references list as a requires
- Edit your App.xaml
from this
<Application.Resources>
<!-- Your stuff here -->
</Application.Resources>
to this
<Application.Resources>
<ResourceDictionary>
<!-- Put your stuff here instead -->
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="/PresentationFramework.Aero;component/themes/Aero.NormalColor.xaml"/>
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</Application.Resources>
Source: http://mrpmorris.blogspot.com/2008/05/using-vista-aero-theme-in-xp-wpf-apps.html
Other alternatives below. Be sure to add the corresponding assembly to your application’s reference list as a requires.
<ResourceDictionary Source="/PresentationFramework.Aero;component/themes/Aero.NormalColor.xaml"/>
<ResourceDictionary Source="/PresentationFramework.Classic;component/themes/Classic.xaml"/>
<ResourceDictionary Source="/PresentationFramework.Royale;component/themes/Royale.NormalColor.xaml"/>
<ResourceDictionary Source="/PresentationFramework.Luna.Homestead;component/themes/Luna.Homestead.xaml"/>
<ResourceDictionary Source="/PresentationFramework.Luna.Metallic;component/themes/Luna.Metallic.xaml"/>
<ResourceDictionary Source="/PresentationFramework.Zune;component/themes/Zune.NormalColor.xaml"/>