marechai/Marechai/ViewModels/SoundSynthViewModel.cs

using System;
using System.ComponentModel.DataAnnotations.Schema;

namespace Marechai.ViewModels
{
    public class SoundSynthViewModel : BaseViewModel<int>
    {
        public string    Name        { get; set; }
        public string    CompanyName { get; set; }
        public int?      CompanyId   { get; set; }
        public string    ModelCode   { get; set; }
        public DateTime? Introduced  { get; set; }
        public int?      Voices      { get; set; }
        public double?   Frequency   { get; set; }
        public int?      Depth       { get; set; }
        public int?      SquareWave  { get; set; }
        public int?      WhiteNoise  { get; set; }
        public int?      Type        { get; set; }

        [NotMapped]
        public string IntroducedView => Introduced?.ToShortDateString() ?? "Unknown";
    }
}