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Editorial Team
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Asked: 2026-06-12T17:14:23+00:00

I added a Resource Dictionary named ResourceDictionary1 to my silverlight project. I also added

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I added a Resource Dictionary named ResourceDictionary1 to my silverlight project.

I also added a Silverlight Class Library to my project named OtherAssembly, then in this new assembly I added a new Resource Dictionary named ResourceDictionary2:

Project Structure

In my original project I’m trying to merge both dictionaries in MainPage.xaml:

  <ResourceDictionary>
     <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="MyResourceDictionary1.xaml" />
        <ResourceDictionary Source="/OtherAssembly;component/MyResourceDictionary2.xaml" />
     </ResourceDictionary.MergedDictionaries>

When I run the project the line with OtherAssembly throws an exception, saying that there’s an error assigning the property System.Windows.ResourceDictionary.Source in that line:

Error

But at design time, the designer shows everything in order, it finds all the resources.

I don’t know, It seems that the Pack Uri syntax is not well formed.

Anybody knows why I get this error message?

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1 Answer

  1. Editorial Team

    I found the answer.

    I needed to add a reference to OtherAssembly, as the error is not detected until run time, it’s hard to detect it.

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