Creating the Service
To create this service, open Visual Studio .NET and select New Project from the Start window. This will bring up the New Project dialog box shown in Figure 7.1.
Figure 7.1 Creating the new XML Web service project.
Select Visual Basic Projects and choose Web Service. Name the service FourFunctionCalc and set its location to the server that will host the service. In my example, this is simply http://Localhost.