Adding scripting support to your application is one of the most valuable things you can do for your client, letting them add value to your software, and keep it current over time with little or no overhead from the developers. Your users will be able to modify behavior at runtime, change business rules as the market changes and fix subtle bugs as they appear until better fixes come along in the form of compiled code. It is one of the most powerful techniques today employed my many varied business applications. But guess what? Its not very easy to do in .Net. In this article Ill show you how you can use some of the techniques of the past mixed with the .Net framework to add that scripting ability to managed applications, with a touch on a subject that was never considered for scripting: WebServices , including asynchronous calls to them.