static class BitmapExtensions static IEnumerable Point GenerateIndexes

static class BitmapExtensions
{
	static IEnumerable <Point> GenerateIndexes (this Bitmap inst)
	{
		for (int y = 0; y < inst.Height; y++)
			for (int x = 0; x < inst.Width; x++)
				yield return new Point (x, y);
	}
	
	public static Color [] DumpPixels (this Bitmap inst)
	{
		IEnumerable <Point> points = inst.GenerateIndexes ();
		return points.Select (point => inst.GetPixel (point.X, point.Y)).ToArray ();
	}
	
	public static void LoadPixels (this Bitmap inst, Color [] dump)
	{
		foreach (Point point in inst.GenerateIndexes ())
			inst.SetPixel (point.X, point.Y, dump [point.X + point.Y]);
	}
}

static class Program
{
	public static void Main ()
	{
		Bitmap bmp = new Bitmap (@"/home/red-agent/Downloads/shit.JPG");
		
		Color [] dump = bmp.DumpPixels ();
		bmp.LoadPixels (dump);
		
		Console.WriteLine (bmp.Size);
	}
}