Convert System.Drawing.Image to format(.jpeg .gif) whitout saving

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开发者_运维问答 permisssion on it. c# code.

You have to save it somewhere. You could use a MemoryStream, and use one of the Save overloads that accepts a stream.