BlazorEditForms/Model/User.cs

using System.ComponentModel.DataAnnotations;

namespace BlazorEditForms.Model;

public class User
{
    [Required]
    [EmailAddress]
    public string UserId { get; set; } = string.Empty;
    [Required]
    [MinLength(3)]
    public string Code { get; set; } = string.Empty;
}