I am making a library system, and the class design(https://i.stack.imgur.com/5HlUf.png) has already been provided to us . These are my classes, and both have List references to each other. When I try to serialize them, I am faced with a self-referencing loop exception. I understand why the problem exists, I just don't know how to solve it.
class Author
{
public Author(int AuthorID, string Name, int YearOfBirth, List<Book> Books,string Country)
{
this.AuthorID = AuthorID;
this.Name = Name;
this.YearOfBirth = YearOfBirth;
this.Books = Books;
this.Country = Country;
}
public int AuthorID { get; private set; }
public string Name { get; private set; }
public int YearOfBirth { get; private set; }
//[JsonIgnore]
public List<Book> Books { get; private set; }
public string Country { get; private set; }
}
class Book
{
public Book() { }
public Book(int ISBN, string Title, string Genre, List<Author> Authors, int Year, string Description)
{
this.ISBN = ISBN;
this.Title = Title;
this.Genre = Genre;
this.Authors = Authors;
this.Year = Year;
this.Description = Description;
}
public int ISBN { get; private set; }
public string Title { get; private set; }
public string Genre { get; private set; }
//[JsonIgnore]
public List<Author> Authors { get; private set; }
public int Year { get; private set; }
public string Description { get; private set; }
```
[1]: https://i.stack.imgur.com/5HlUf.png
CodePudding user response:
You can ignore the self-referencing loops while serializing by using ReferenceLoopHandling.Ignore
which will not serialize an object if it is a child object of itself. You can use it by adding it in your serializer settings:
JsonConvert.SerializeObject(Author, Formatting.Indented, new JsonSerializerSettings { ReferenceLoopHandling = ReferenceLoopHandling.Ignore});