How Do I: Use a Web Service that is in Another Project?
You can create a Service control for a web service in a different project in the same way that you create Service control for any other web service. You must obtain either a WSDL or a CTRL file for the web service you want to call.
To learn more about how to obtain CTRL files and WSDL files, see CTRL Files: Implementing Controls and WSDL Files.
Once you have obtained a CTRL or WSDL file, you must move it into the project from which you will be using it. For more information, see How Do I: Move or Copy a Web Service from One Project to Another?
For a WSDL file you add to the project directory, a Service control may be generated in the normal way.
To learn more about creating and using Service controls, see Creating a New Service Control.