public enum ImagesFolder
    {
        Inicio,
        Solutions
    };
    [Personalizable(), WebBrowsable(), Category("Carpeta imágenes")]
    public ImagesFolder ImageOption
    {
        get;
        set;
    }

public Carrusel()
    {
        SPListCollection listaDocumentLibrary = SPContext.Current.Web.GetListsOfType(SPBaseType.DocumentLibrary);
        ArrayList listNames = new ArrayList();
        foreach (SPList oList in listaDocumentLibrary)
        {
            listNames.Add(oList.Title);
        }
    }