How do you attach a debugger to a Web service?

Question

I am using a Web service. Can anybody tell me how to debug through it?

Answer 1

If you have control over the webservice, it's as simple as adding it to your solution, running it from localhost (or a server you have the proper credentials for) and then stepping into it through the IDE.

If you don't have control over it, you're out of luck and at the mercy of whomever is providing it.