Localization in iOS- Xamarin

I am using the following code for localization

public override void ViewWillAppear (bool animated)
    {
        base.ViewWillAppear (animated);

        this.lblLocale.Text = 
            string.Format("Locale: {0} - Language: {1}", NSLocale.CurrentLocale.LocaleIdentifier, NSLocale.PreferredLanguages[0]);

        string resourcePath = NSBundle.MainBundle.PathForResource(NSLocale.PreferredLanguages[0], "lproj");
        NSBundle localeBundle = NSBundle.FromPath(resourcePath);
        this.lblLocalizedOutput.Text = localeBundle.LocalizedString("Have a nice day!", "Localized output on MultipleLanguageAppViewController");

    }

But the issue what I am facing is, I am getting the language as "en" always.

while executing this code NSLocale.PreferredLanguages[0]

why it is always returning en. Please help