Please dont post the same question to multiple forums. This is considered rude here. http://www.codeproject.com/Questions/83785/how-could-we-know-that-a-method-is-executing-a-cer.aspx[^] Follow it in one place. BTW: you edited your question in Q&A and the tag there suggests a windows application now... over here it looks like a web app(based on forum)... you should edit your question in Q&A and update it what you are looking for.
You can not do this because you used three tire architecture ,so you have to maintained that properly .If it is not maintained three tire,that time you can