Question

I’m having a bit of trouble with resolving resources from an external assembly.

I have a Styles.xaml file in a project called Theme and I have a Default Button style which has been declared as follows:

    <Style TargetType="{x:Type Button}" x:Key="{x:Type Button}">
    <!--Setters here-->
    </Style>

And then in a separate WPF project (but in the same solution) I have the following in the app.xaml file:

    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary
        Source="/Theme;component/Styles.xaml" />
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>

Then in the main Window, I declare a default Button with no style attached to it like so:

    <Button Width="100" Height="100" />

In design view, the button appears to pick up the style from the Styles.xaml file, but when I build and run the project, the Button just defaults to the standard button style.

I have checked to see that the Theme.dll file has been copied across to the WPF build directory (and it has) so I don’t know why this is happening.

Interestingly, if I define the Button Style like this

    <Style TargetType="{x:Type Button}" x:Key="MyStyle">

And then reference it directly on the Button in the other project like this

    <Button Style={StaticResource MyStyle} Width="100" Height="100" />

It picks up the style in design view and works normally when the project is built and executed.

Any ideas? Any help would be great!

Kris

Answer 1

You may need to use a complete pack URI where you reference the XAML file, namely with siteoforigin if you don’t reference embedded resources.