page is not connected to code behind file!

To whom it may concern:

I'm developing the site using your codes and I found that the page is not connected to code behind file, which means when I change something is code-behind, it won't reflect to the page. I'm using Visual Studio Express 2008, 3.5

thank you,

Please ensure that you recompiled the solution (any change to the code behind will require a recompile)

thanx...
I did recompile of course. but still didn't affect

Check that the namespace is reference the correct unit of work, else it will not work. Other wise, do a Clean Solution, and rebuild should it still not work Past the code of the ASPX and  the Cs file so we can see

thanks, Sean:

I've tried, and it's not the issue. but wired thing is when I change the setting to CV 2.0 instead of 3.5, it works fine. but it complains about asp.ListView, but I think 1.3.0 need to use 3.5, correct?

Yes, it looks like it, I have open Mine in VS2010 Beta. If there was any Older reference, I would have upgraded them. So yes, everything works 100% with 3.5.