builder.Services.AddControllers().AddJsonOptions(options =>
{
    options.JsonSerializerOptions.Converters.Add(new DateTimeConverter());
});

builder.Services.AddControllers().AddJsonOptions(options =>
{
    options.JsonSerializerOptions.Converters.Add(new DateTimeConverter());
});

using System;
using System.Text.Json;
using System.Text.Json.Serialization;

namespace EventEnroll.Utils
{
    public class DateTimeConverter : JsonConverter<DateTime>
    {
        public override DateTime Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
        {
            return DateTime.Parse(reader.GetString());
        }

        public override void Write(Utf8JsonWriter writer, DateTime value, JsonSerializerOptions options)
        {
            writer.WriteStringValue(value.ToString("dd/MM/yyyy"));
        }
    }
}

using System;
using System.Text.Json;
using System.Text.Json.Serialization;

namespace EventEnroll.Utils
{
    public class DateTimeConverter : JsonConverter<DateTime>
    {
        public override DateTime Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
        {
            return DateTime.Parse(reader.GetString());
        }

        public override void Write(Utf8JsonWriter writer, DateTime value, JsonSerializerOptions options)
        {
            writer.WriteStringValue(value.ToString("dd/MM/yyyy"));
        }
    }
}

using EventEnroll.Models;
using Microsoft.AspNetCore.Identity;
using System.ComponentModel.DataAnnotations;
using System.Text.Json.Serialization;

namespace EventEnroll.Dtos.Event
{
    public class AddEventDto
    {

        public string Title { get; set; } = string.Empty;
        public string Description { get; set; } = string.Empty;
        [DisplayFormat(DataFormatString = "{0:dd/MM/yyyy}")]
        public DateTime Date { get; set; }
        [JsonIgnore]
        public string? CreatorId { get; set; }
        [Required]
        public List<string> Attendees { get; set; } = new List<string>();

    }
}

using EventEnroll.Models;
using Microsoft.AspNetCore.Identity;
using System.ComponentModel.DataAnnotations;
using System.Text.Json.Serialization;

namespace EventEnroll.Dtos.Event
{
    public class AddEventDto
    {

        public string Title { get; set; } = string.Empty;
        public string Description { get; set; } = string.Empty;
        [DisplayFormat(DataFormatString = "{0:dd/MM/yyyy}")]
        public DateTime Date { get; set; }
        [JsonIgnore]
        public string? CreatorId { get; set; }
        [Required]
        public List<string> Attendees { get; set; } = new List<string>();

    }
}