i tried so hard on it and didn't faund any useful thing
I guess we'll just have to agree to disagree. You were shown that there are different pages for the different framework versions, but you couldn't bother reading and comparing them yourself: You just said that you were using a 3.0 method when you weren't, so someone had to go show you.
6 minutes later you asked for someone to tell you how to do it.
I guess you and I just have different views of what "tried so hard" means.
Anyway, I'm bowing out of this thread now. As I said, this is not my area of expertise. I was simply trying to point you in the right direction of where to do your own research so you could see what methods were available to you under 3.0
I wish you the best of luck with your experimentation. When you have code that comes from the 3.0 framework, but still need some help please don't hesitate to show
the code that you have written along with the details of errors so that someone with more experience in this area can guide you.