activestep/Step.Model/DTOModels/AlarmModels/DTONewAlarmNoteModel.cs

using Step.Model.DatabaseModels;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Step.Model.DTOModels.AlarmModels
{
    public class DTONewAlarmNoteModel
    {
        [Required]
        public string Message { get; set; }
    }

    public class DTOAlarmNoteModel : DTONewAlarmNoteModel
    {
        public int Id { get; set; }

        public DateTime DateTime { get; set; }

        public DTOMessageUserModel User { get; set; }

        public static explicit operator DTOAlarmNoteModel(AlarmNoteModel note)
        {
            DTOMessageUserModel user = note.User != null ? (DTOMessageUserModel)note.User : null;
            return new DTOAlarmNoteModel()
            {
                Id = note.NoteId,
                DateTime = note.DateTime,
                Message = note.Message,
                User = user
            };
        }
    }
}