problem with System.Drawing.Image and binary writing to pagecontents

 Hello, i have problem with displaying manipulated image on page content,
my code looks like 
public void resizeImages(string bmapPath)
        {
           
           
            System.Drawing.Image img = System.Drawing.Image.FromFile(bmapPath);
            System.Drawing.Image img2 = new System.Drawing.Bitmap(img.Width/ 2, img.Height/ 2);
            System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(img2);
            //System.Drawing.Image img2 = img.GetThumbnailImage(img.Width / 2, img.Height / 2, new System.Drawing.Image.GetThumbnailImageAbort(Dum ...