How to use collection in loop

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C#

C#4.0

Hi all, In Update method I had int count, let say count == 4, then i am using for loop to get id, version and set. In this case Id,version and set values getting only the last value, but how to get the all the values

public void Updates(AUnit _aUnit, int Id)
    {
        ImageDetails _details = new ImageDetails(_aUnit, Id);

        int count = (int) _aUnit.ReadBits(8);
        for (int i = 0; i < (int) count; i++)
        {
            _details.ID = (int) _aUnit.ReadBits(8);
            _details.Version = (int) _aUnit.ReadBits(8);
            _details.set = (int) _aUnit.ReadBits(24);
        }

        _details.Rset = _aUnit.Buffer.Skip(10).Take(_details.set).ToArray();

        //MemoryStream ms = new MemoryStream(_details.PortrateImages.First());
        //Image image = Image.FromStream(ms);
        //Bitmap bmp = new Bitmap(image);

        _details.UpdateTime = DateTime.Now.ToString("h:mm:ss tt");
        newData.Add(_details);
    }
public class ImageDetails
  {
    public ImageDetails(AUnit _au, int carouselId)
    {            
        carId = carouselId;
        _AUnit = _au;         

        _updateTime = "";
    }
    private string _updateTime;
    public int ID { get; set; }
    public int Version { get; set; }
    public int set { get; set; }
    public int carId { get; set; }
    public byte[] Rset { get; set; }
    public AUnit _AUnit { get; set; }
    public byte[] bytes { get; set; }
    public List<byte[]> dataArray = new List<byte[]>();

    public string UpdateTime
    {
        get { return _updateTime; }
        set { _updateTime = value; }
    }

    public List<byte[]> PImages
    {
        get
        {
            List<byte[]> Plogos = new List<byte[]>();
            if (carId == 2)
            {
                Plogos.Add(Rset);
            }
            return Plogos;
        }

    }
    public List<byte[]> LImages
    {
        get
        {
            List<byte[]> Llogos = new List<byte[]>();
            if (carId == 1)
            {
                Llogos.Add(Rset);
            }

            return Llogos;
        }

    }
}

What I have tried:

I tried but i feel its wrong and not working, Created a seperate list for id, version and set, eg: _details.imageList.Add(logoHeader.LogoID);