In automation, apart from having a normal web interface, it is important to be able to provide interoperable interfaces for control. One of the simplest methods to achieve this is through web services. This section shows you how to add support to an application for web services that support both SOAP and REST.
A web services resource is a special type of synchronous web resource. Instead of you parsing a query string or decode data in the response, the web service engine does that for you. All you need to do is create methods as you normally do, perhaps with some added documentation, and the web service engine will publish these methods using both SOAP and REST. Before we define our web service, we need the references to System.Web and System.Web.Services in our application. We also need to add a namespace reference to our application:
using System.Web.Services;
We will define a web service resource by creating a class that...