Use an External ResourceDictionary in a WindowsPhone 7 app

Question

I am trying to create an ResourceFile Called DataTemplate.xaml in an external dll and use that in a WP7 page. When I do the following in the header of my Page I get an erro

Answer 1

I've managed to get this to work using the following steps:

1. Created a standard WP7 application using the "Windows Phone Application" application template called "WP7ExternalResourcesTest".
2. Added a project to the same solution using the "Windows Phone Class Library" template called "WP7ExternalResourcesTestLibrary".
3. Removed the default Class.cs file form the library project.
4. Added a file called "External.xaml" using the "XML file" template and set the "Build Action" to "Page".

5. Added the following XAML to the new XAML file:

6. Built the library project, and then added a reference to it from the WP7ExternalResourcesTest project.

7. In WP7ExternalResourcesTest, opened App.xaml and changed the Application.Resources section to the following:

8. In MainPage.xaml, added Foreground="{StaticResource ForegroundBrush}" to the TextBlock named "PageTitle".
9. Ran the application in the emulator. The end result was that the TextBlock correctly displayed the words "page name" in red.

Hope this helps.