FontFamily Null refrence exception and NavigationView CornerRadius null refrence

[ghost1372]

Create a Blank WPF app Add nuget package Add Resources in MainWindow (not app.xaml)

<Window.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ui:ThemeResources />
            <ui:XamlControlsResources />
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</Window.Resources>

and try add ComboBox or any controls which is using IconElement

<ComboBox/>

and you will get exception

also i get exception here:

private static void OnFontFamilyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
    var fontIcon = (FontIcon)d;
    if (fontIcon._textBlock != null)
    {
        fontIcon._textBlock.FontFamily = (FontFamily)e.NewValue;
    }
}

can you fix this?

---

Update:

also when i want to use NavigationView i get null refrence exception for Cornerradius: removing this line from NavigationView.xaml file can fix this issue:

CornerRadius="{Binding Value, Source={StaticResource OverlayCornerRadiusProxy}, Converter={StaticResource RightCornerRadiusFilterConverter}}"

[NotYoojun]

I will check this later, I'm on break right now.

[ghost1372]

i changed (FontFamily)Application.Current.Resources["SymbolThemeFontFamily"] with new FontFamily("Segoe MDL2 Assets")

and issue can be fixed

[NotYoojun]

What about changing it to (FontFamily)Application.Current.FindResource("SymbolThemeFontFamily"), does that work? I'm not with my computer so I can't test it out right now.

[ghost1372]

(FontFamily)Application.Current.FindResource("SymbolThemeFontFamily")

not worked, i think this is related #25

[NotYoojun]

OK, let's talk about it in #25