在C＃中调试Web服务代理类

In my project I have created a web application which has a web service. In the same solution I have added another web application. I am consuming the web service from this application. I have added a web reference using add web reference using web reference option. I want to debug the proxy class generated(when i add a web reference). I put a debugger in the proxy class but it did not work.Then I copied the proxy class and created the a new class in client web app with same same and same content and deleted the web reference. But still I am not able to debug the proxy class. How can i debug the proxy class? Please help.In my project I have created a web application