Serializing List<DayOfWeek> in C#

I’m trying to create a JSON array that contains list of weekdays.

I’m testing this in a console app but it keeps giving me an error i.e. exited with code 0.

Here’s what I’m doing:

using Newtonsoft.Json;

var days = new List<DayOfWeek>();
days.Add(DayOfWeek.Monday);
days.Add(DayOfWeek.Wednesday);

var json = JsonConvert.SerializeObject(days);
Console.WriteLine(json);

What am I doing wrong?

>Solution :

First, use System.Text.Json, as it’s more up to date.

Second, you can do what you want with a Linq expression…

var days = JsonSerializer.Serialize(Enum.GetValues(typeof(DayOfWeek))
  .Cast<DayOfWeek>().ToList());

Not actually sure if you need the Cast<> in there, but this certainly works.