bytearray - error in my byte[] to WPF BitmapImage conversion?

Question

I'm saving a BitmapImage to a byte[] for saving in a DB. I'm pretty sure the data is being saved and retrieved accurately so it's not an issue there.

On my byte[] to BitmapImage conversion I keep getting an exception of "System.NotSupportedException: No imaging component suitable to complete this operation was found."

Can anyone see what I'm doing wrong with my two functions here?

  private Byte[] convertBitmapImageToBytestream(BitmapImage bi)
  {
     int height = bi.PixelHeight;
     int width = bi.PixelWidth;
     int stride = width * ((bi.Format.BitsPerPixel + 7) / 8);

     Byte[] bits = new Byte[height * stride];
     bi.CopyPixels(bits, stride, 0);

     return bits;
  }

  public BitmapImage convertByteToBitmapImage(Byte[] bytes)
  {
     MemoryStream stream = new MemoryStream(bytes);
     stream.Position = 0;
     BitmapImage bi = new BitmapImage();
     bi.BeginInit();
     bi.StreamSource = stream;
     bi.EndInit();
     return bi;
  }

Answer 1

Does this StackOverflow question helps?

byte[] to BitmapImage in silverlight

EDIT:

Try this, not sure it will work:

public BitmapImage convertByteToBitmapImage(Byte[] bytes)
{
    MemoryStream stream = new MemoryStream(bytes);
    stream.Position = 0;
    BitmapImage bi = new BitmapImage();
    bi.BeginInit();
    bi.CacheOption = BitmapCacheOption.OnLoad;
    bi.DecodePixelWidth = ??; // Width of the image
    bi.StreamSource = stream;
    bi.EndInit();
    return bi;
}

UPDATE 2:

I found these:

Load a byte[] into an Image at Runtime

BitmapImage from byte[] on a non UIThread

Apart from that, I don't know.