Mahapps metro themes not available as no app.xaml

Question

I am working on an Office Add-In and wanted to add a WPF Mahapps Windows.

Everything went well, but I cannot apply the Mahapps Windows style.
Looking at the tutorial here I see that I update the App.xaml to add the various themes. As it is not a WPF project, I don't have the App.xaml.

What is the most efficient way to apply the style?
Can I do it directly at the Windows level?
Or do I need to manually create an App.xaml?

Answer 1

You can put all the MahApps.Metro resources also inside a Window resource tag like

<Controls:MetroWindow x:Class="StyledWindow"
                      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                      xmlns:Controls="http://metro.mahapps.com/winfx/xaml/controls">
  <Window.Resources>
    <ResourceDictionary>
      <ResourceDictionary.MergedDictionaries>
        <!-- MahApps.Metro resource dictionaries. Make sure that all file names are Case Sensitive! -->
        <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.xaml"/>
        <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Fonts.xaml"/>
        <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Colors.xaml"/>
        <!-- Accent and AppTheme setting -->
        <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/Blue.xaml"/>
        <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/BaseLight.xaml"/>
      </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
  </Window.Resources>

  <Grid>
  </Grid>
</Controls:MetroWindow>

Hope that helps!