byte array to bitmap image

bytetobitmap.cs

// assume 'img' is a byte[]
BitmapImage bmp = new BitmapImage();

using (var ras = new InMemoryRandomAccessStream())
{
    var strm = ras.GetOutputStreamAt(0).AsStreamForWrite();

    strm.Write(img, 0, img.Length);
                
    bmp.SetSourceAsync(ras);
}