Convert System.Drawing.Image to format(.jpeg .gif) whitout saving
<p>I need to convert a  System.Drawing.Image object to gif whitout saving it to a file(that means i can't use  the save function). (bitearray or base64) sow i can send it to a web service.  the code is on a server and i don't have write permisssion on it. c# code.</p>
