DependencyProperty + Binding в WPF

public class CameraLocalization : UserControl
    {
        public CameraLocalization()
        {
            headers = new CameraHeaders();
            toolTips = new CameraToolTips();
            SetLocal();
            //SetEnLocal();
        }
        
        private Language lang = SettingsManager.Language.ru_RU;
        private CameraHeaders headers;
        private CameraToolTips toolTips;
 
        public Language Lang
        {
            get { return lang; }
            set
            {
                lang = value;
                SetLocal(); 
                //RaisePropertyChanged();
            }
        }
 
        public static readonly DependencyProperty HeadersProperty =
            DependencyProperty.Register("Headers", typeof(CameraHeaders), typeof(CameraLocalization), new PropertyMetadata(default(CameraHeaders)));
 
        public CameraHeaders Headers
        {
            get { return (CameraHeaders)GetValue(HeadersProperty); }
            set { SetValue(HeadersProperty, value); }
        }

private void SetRuHeaders()
        {
            headers.PositionGroupHeader = ru_RU.CameraPositionGroupHeader;
            headers.ViewDirectionGroupHeader = ru_RU.CameraViewDirectionGroupHeader;
}

private void SetRuHeaders()
        {
            Headers.PositionGroupHeader = ru_RU.CameraPositionGroupHeader;
            Headers.ViewDirectionGroupHeader = ru_RU.CameraViewDirectionGroupHeader;}

public class CameraHeaders: UserControl
    {
        public CameraHeaders()
        {
            this.DataContext = this;
        }
public static readonly DependencyProperty SectionManagementProperty =
            DependencyProperty.Register("SectionManagement", typeof(String), typeof(CameraHeaders), new FrameworkPropertyMetadata(default(String)));
 
        public String SectionManagement
        {
            get { return (String) GetValue(SectionManagementProperty); }
            set { SetValue(SectionManagementProperty, value); }
        }
}

public static readonly DependencyProperty SectionManagementProperty =
            DependencyProperty.Register("SectionManagement", typeof(String), typeof(CameraHeaders), new FrameworkPropertyMetadata(default(String), OnSectionManagementChanged));
 
 
private static void OnSectionManagementChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
    CameraHeaders ch = (CameraHeaders)d;
    ch./*...*/ = e.NewValue as string;
}

var res = App.Current.Resources["cveta"] as Palitra;