using Model; using System; using System.Collections.Generic; using System.Globalization; using System.Linq; using System.Text; using System.Threading.Tasks; namespace BookApp.UseCase { public class AuthorsListToStringConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { if (value is List authorsList && authorsList.Any()) { return string.Join(", ", authorsList.Select(a => a.Name)); } return string.Empty; } public object ConvertBack( object value, Type targetType, object parameter, CultureInfo culture ) { throw new NotImplementedException(); } } }