How to write server side code in client side in vs 2010?

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ASP.NET

Hi I am write server side code in client side using "<% %>" this block in VS 2012,if i use break point i can trace break point and each line i can trace,

But same code with same block "<% %>"if i write in vs2010 ,i cant use break point and also i cant use alert also ,bcz this is server side code and also it show warring msg,in open and end tag it show warring msg like "Expected expression"

Here i attach both vs 2012 and 2010 screenshot in client side which i write server side code.if we see screenshot can find different between 2012 and 2010

http://prntscr.com/6q6gcq[^]

http://prntscr.com/6q6gf3[^]

First link is vs 2012 and second link is 2010,my problem is i cant use breakpoint in vs2010,bcz i need to trace each line value,but one thing it not show any error.


What open and close tag need to use in vs2010 for server side code in client side.

Regards

Araind