How to get style in code from resource dictionary?

Question

If you put style in app.xmal, then you can get the style with the code like:

Style = Application.Current.Resources["myStyle"] as Style;

But if I put style in a dictionary resource of a separate file Styles.xmal like:

 <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>                
                <ResourceDictionary Source="Assets/Styles.xaml"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>

Then how to get the style in code?

Answer 1

Found out reason: code

Style = Application.Current.Resources["myStyle"] as Style;

works fine. My problem is caused by some other factors.