how record distance "system.drawing.image"

i am now minute component stores meta information around 140,000 ish images stored within leave settlement library being changed cloud storage. i am controlling following jpg data...

system.drawing.image settlement = system.drawing.image.fromfile("filepath");

im definitely new settlement plan nonetheless glorious removing rudimentary values width, height, aspect ratio etc nonetheless i can't work out collect physical record distance jpg spoken bytes. any assistance many appreciated.

thanks

final fortitude including an md5 crush settlement after comparison

system.drawing.image settlement = system.drawing.image.fromfile(filepath);

if (image != null)
{
  int extent = image.width;
  int tallness = image.height;
  decimal aspectratio = extent > tallness ? decimal.divide(width, height) : decimal.divide(height, width);  
  int filesize = (int)new system.io.fileinfo(filepath).length;

  controlling (system.io.memorystream tide = new system.io.memorystream(filesize))
  {
    image.save(stream, system.drawing.imaging.imageformat.jpeg);
    byte[] imagebytes = stream.getbuffer();
    system.security.cryptography.md5cryptoserviceprovider provider = new system.security.cryptography.md5cryptoserviceprovider();
    byte[] crush = provider.computehash(imagebytes);

    system.text.stringbuilder hashbuilder = new system.text.stringbuilder();

    (int i = 0; i < hash.length; i++)
    {
      hashbuilder.append(hash[i].tostring("x2"));
    }

    twine md5 = hashbuilder.tostring();
  }

  image.dispose();

}