How to place XAML-only resources in a DLL (Reference) file to be used by WPF applications?

Question

My WPF applications are reaching the level of complexity at which it becomes desirable to place some of the code and other resources inside a Reference file (*.dll).

I am sure I can figure out how to do this, by following the myriad applications out there.

In this particular case, however, the files are two, XAML:

Can somebody please provide an example on how to expose or publish the XAML resources? Are *.cs files required?

TIA

The XAML file outlined by @HighCore should look like this:

<Application x:Class="Application"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >

    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="pack://application:,,,/ReferencedAssembly;component/Subfolder/ResourceFile.xaml"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>
</Application>

Answer 1

XAML ResourceDictionaries do not generate classes. I'm not sure why you would expect such thing.

Simply move the needed ResourceDictionary definitions to a separate assembly then use the Pack URI Syntax to merge these resources to your application's Resources in app.xaml:

<Application ....>
   <Application.Resources>
      <ResourceDictionary>
         <ResourceDictionary.MergedDictionaries>
             <ResourceDictionary Source="pack://application:,,,/ReferencedAssembly;component/Subfolder/ResourceFile.xaml"/> 
         </ResourceDictionary.MergedDictionaries>
      </ResourceDictionary>
   </Application.Resources>
</Application>