.NET (Core and Framework)

public class Data
{
    private List<int> a;

    public Data()
    {
      a = new List<int>();
    }

    public Data(int[] nums)
    {
       a = new List<int>();
       // add to a
    }

    public static Data Parse(string nums)
    {
       // say nums = "1,2,3
       string[] _nums = nums.Split(",".ToCharArray());
       List<int> iList = new List<int>();
       foreach(string s in nums)
          iList.Add(int32.Parse(s));
       return new Data(iList.ToArray());
    }
}

public BitmapImage TheImage
{
  get
  {
    return LoadImageFromSource();
  }
}

private BitmapImage LoadImageFromSource()
{
  BitmapImage image = new BitmapImage();

  try
  {
    image.BeginInit();
    image.CacheOption = BitmapCacheOption.OnLoad;
    image.CreateOptions = BitmapCreateOptions.IgnoreImageCache;
    image.UriSource = new Uri( FullPath, UriKind.Absolute );
    image.EndInit();
  }
  catch{
    return DependencyProperty.UnsetValue;
  }
  return image;
}

Naerling wrote:

I don't really think my six months of experience have anything to do with it