Automapper实现自动映射的实例代码

public class User{  private const int NameMaxLength = 20;  private const int PassWordMaxLength = 16;  [Key]  public long Id { get; }  [MaxLength(NameMaxLength)]  public string Name { get; set; }  [MaxLength(PassWordMaxLength)]  [DataType(DataType.Password)]  public string PassWord { get; set; }}public class UserDto{  private const int NameMaxLength = 20;  private const int PassWordMaxLength = 16;  [MaxLength(NameMaxLength)]  public string Name { get; set; }  [MaxLength(PassWordMaxLength)]  public string PassWord { get; set; }}