Neu in .NET 8.0 [27]: Konfigurierbare Namenskonventionen in System.Text.Json 8.0

var options = new JsonSerializerOptions
{
 // NEU: Enumeration JsonNamingPolicy mit Namenskonventionen KebabCaseLower, KebabCaseUpper, SnakeCaseLower und SnakeCaseUppter als Alternative zum bisher fest gesetzten CamelCase
 PropertyNamingPolicy = JsonNamingPolicy.KebabCaseUpper, // Standard ist CamelCase
};
…
var consultant = new Consultant() { ID = 42, FullName = "Holger Schwichtenberg", Salutation = "Dr.", PersonalWebsite = "www.dotnet-doktor.de" };
consultant.Languages.AddRange(["C#", "JavaScript", "TypeScript"]);
consultant.Address = new Address() { City = "Essen", Country = "Germany" };
Console.WriteLine("Objekt im RAM:");
Console.WriteLine(consultant);
Console.WriteLine();
 
CUI.H3("Serialisierung (KebabCaseUpper):");
string json1 = JsonSerializer.Serialize(consultant, options);
Console.WriteLine(json1); // {"ID":42,"FULL-NAME":"Holger Schwichtenberg","SALUTATION":"Dr.","PERSONAL-WEBSITE":"www.dotnet-doktor.de"}
…
CUI.H3("\nDeserialisierung: (vollständig)");
try
 {
  var jsonString = """
  {"ID":42,"FULL-NAME":"Holger Schwichtenberg","SALUTATION":"Dr.",
   "PERSONAL-WEBSITE":"www.dotnet-doktor.de",
   "ADDRESS":{"COUNTRY":"Germany","CITY":"Essen"}}
  """;
  Console.WriteLine(jsonString);
  var obj = JsonSerializer.Deserialize<Consultant>(jsonString, options);
  if (obj != null) CUI.Success(obj.ToString());
 }
catch (Exception ex)
 {
  CUI.PrintError(ex.Message); 
 }

using System.Text.Json.Serialization;
 
namespace FCL_JSON;
 
public interface IBusinessObject
{
 UInt128 ID { get; init; } 
}
 
public interface IPerson : IBusinessObject
{
 string? Salutation { get; set; }
 string? FullName { get; set; }
 public Address Address { get; set; }
}
 
public interface IConsultant : IPerson
{
 string? PersonalWebsite { get; set; }
 public List<string> Languages { get; }
}
 
public class Address
{
 public string Country { get; set; }
 public string City { get; set; }
}
 
public class Person : IPerson
{
 public Person() { }
 public required UInt128 ID { get; init; }
 public required string FullName { get; set; }
 public string? Salutation { get; set; }
 public Address Address { get; set; }
 
 public override string ToString()
 {
  return $"Person {ID}: {(!String.IsNullOrEmpty(Salutation) ? Salutation + " " : "")}{FullName} wohnt in {Address?.City ?? "UNBEKANNT"} ";
 }
}
 
public class Consultant : Person, IConsultant
{
 public Consultant() { }
 
 public List<string> Languages { get; } = new();
 
 public string? PersonalWebsite { get; set; }
 
 public override string ToString()
 {
  return $"Consultant {ID}: {(!String.IsNullOrEmpty(Salutation) ? Salutation + " " : "")}{FullName} wohnt in {Address.City} -> {PersonalWebsite} Sprachen: {String.Join('+', Languages)}";
 }
}