Загрузка данных


using System.ComponentModel.DataAnnotations;

namespace AutoServiceWinForms.Models
{
    public class Client
    {
        [Key]
        public int Id { get; set; }

        [Required(ErrorMessage = "ФИО обязательно")]
        [MaxLength(100)]
        public string FullName { get; set; } = string.Empty;

        [Required(ErrorMessage = "Телефон обязателен")]
        [Phone(ErrorMessage = "Неверный формат")]
        [MaxLength(20)]
        public string Phone { get; set; } = string.Empty;

        [EmailAddress]
        [MaxLength(100)]
        public string? Email { get; set; }

        public DateTime RegistrationDate { get; set; } = DateTime.Now;
    }
}