public override void EditResource( IResource res )

        {

_book = res;

_edtName.Text = res.GetStringProp( "Name" );

StringBuilder authorBuilder = new StringBuilder();

            foreach( IResource author in _book.GetLinksOfType( "Contact", PropTypes.BookAuthor ) )

            {

                if ( authorBuilder.Length > 0 )

                {

authorBuilder.Append( "," );

                }

authorBuilder.Append( author.DisplayName );

            }

_edtAuthors.Text = authorBuilder.ToString();

            if ( res.HasProp( PropTypes.PubYear ) )

            {

_udYear.Value = res.GetIntProp( PropTypes.PubYear );

            }

_edtIsbn.Text = res.GetStringProp( PropTypes.Isbn );

}