Click on a 1 dynamic button 2

Question

Click on a 1 dynamic button 2 dynamic button created ,again click on a 2 dynamic button 3 dynamic button created ,again click on 3 dynamic button 4 ...and so on ,now my question is that how i will get that particular button i click..
or i click on a dynamic 3 button then how only 3 dynamic button event fired...in ASP.net
pleaseeeee helpp.............urgent..........