using System;

using static System.Console;

using System.Collections.Generic;

using System.ComponentModel.DataAnnotations;

using System.ComponentModel.DataAnnotations.Schema;

using System.Linq;

​

public class Program {

    public static void Main() {

        foreach (var c in GetColumns()) WriteLine(c);

    }

    private static IEnumerable<string> GetColumns() => typeof(Usuario).GetProperties()

            .Where(e => e.Name != "Id" && !(Attribute.GetCustomAttribute(e, typeof(NotMappedAttribute)) is NotMappedAttribute))

            .Select(e => e.Name);

}

​

public class Usuario {

    [Required]

    public string Nome { get; set; }

​

    [Required]

    public string Login { get; set; }

​

    [Required]

    public string Password { get; set; }

​

    [NotMapped]

    [Required]

    public string ConfirmPassword { get; set; }

}