Passing the ID of the gridview's selected record to another page using querystring

[Xorxness]

I have a gridview with selection enabled, I also added a button under it that is supposed to take the user to another page with a formview waiting to display the selected record's complete information. How do i pass the ID as a query string and use it in the sqldatasource in the other page?My gridview has\[code\]IDName\[/code\]The formview will show\[code\]IDNameDescriptionUploaderAudienceCategory\[/code\]