来自:https://stackoverflow.com/questions/8311805/bitmapsource-copypixels-byte-bitmapsource-how-to-do-this-simple
private byte[] BitmapSourceToArray(BitmapSource bitmapSource)
{
// Stride = (width) x (bytes per pixel)
int stride = (int)bitmapSource.PixelWidth * ((bitmapSource.Format.BitsPerPixel + 7) / 8);
byte[] pixels = new byte[(int)bitmapSource.PixelHeight * stride];
bitmapSource.CopyPixels(pixels, stride, 0);
return pixels;
}
private BitmapSource BitmapSourceFromArray(byte[] pixels, int width, int height)
{
WriteableBitmap bitmap = new WriteableBitmap(width, height, 96, 96, PixelFormats.Bgra32, null);
bitmap.WritePixels(new Int32Rect(0, 0, width, height), pixels, width * ((bitmap.Format.BitsPerPixel + 7) / 8), 0);
return bitmap;
}