Writing GPS data in a simple image file WITH NO PREVIOUS GPS data in it

-> C#

I want to write (and read afterward) a GPS data in an image with no GPS data already present in it!

I know this question is everywhere on internet but they didn't tell you how to write specifically in an image with EMPTY GPS information.

If you are looking forward to ask me if a write any code or tried my self, then honestly, i am trying since 5 days to do this.I tried approx. all EXIF libraries available online on codeproject.com etc. I tried using property. I tried almost everything but didn't get it. They all told you to update it, not create it.