Zoom_in.cs

private void zoomIn(PictureBox picImp) {
  y = new System.Drawing.Bitmap(2 * (x.Width), 2 * (x.Height));
  for (int i = 0; i <= x.Width - 1; i++) {
    for (int j = 0; j <= x.Height - 1; j++) {
      z = x.GetPixel(i, j);
      y.SetPixel(i * 2, j * 2, z);
      y.SetPixel(i * 2 + 1, j * 2, z);
      y.SetPixel(i * 2, j * 2 + 1, z);
      y.SetPixel(i * 2 + 1, j * 2 + 1, z);
    }
  }
  Message.setMessage(PicSave.savechange(picImp, y), "ZoomIn");
}