SVGPathConverter.cs

public class SVGPathConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture) => GetSVGName((int)(value ?? 0), int.Parse(parameter as string ?? "0"));

    string GetSVGName(int status, int parameter)
    {
        if (status >= parameter)
            return "resource://In2TeamsSplitter.Resources.starFilled.svg";
        else
            return "resource://In2TeamsSplitter.Resources.starEmpty.svg";      
    }

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