Владимир Вохменцев

class XmlAttributeConverter : IValueConverter
{
	public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
	{
		if (value is IEnumerable<XmlNode> values)
		{
			return values.OfType<XmlAttribute>().Select(xa => xa.Value);
		}

		return value;		
	}

	public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
	{
		throw new NotImplementedException();
	}
}