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Adding a ResourceDictionary using a custom markup extension

Hi. I have a markup extension that provides a ResourceDictionary:

public class CustomExtension : MarkupExtension
    {
        public override object ProvideValue(IServiceProvider serviceProvider)
        {
            var r = GetResourceDictionary();
            return r;
        }
    }

GetResourceDictionary() is a method that returns a valid ResourceDictionary object. I want to add this to my Application.Resources

<Application.Resources>
        <local:CustomExtension />
    </Application.Resources>

but this doesn't work. Why doesn't it?

Johnny Q.

You must add a ResourceDictionary to ResourceDictionary.MergedDictionaries. Window.Resources only has get accessor.

        <ResourceDictionary x:Key="rd">
            <ResourceDictionary.MergedDictionaries>
                <local:CustomExtension/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>

Bigsby, Lisboa, Portugal - O que for, quando for, é que será o que é... http://bigsby.eu

Bigsby

I tried that too, but it doesn't work either.

Johnny Q.

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