1. Creating,Publishing,Testing and Describing a Web Service
Publishing a web service
Making a web service available to receive client requests
Consuming a Web Service
using a web service from a client application
has two parts
1. object of a proxy class for interacting with web service
2. client application that consumes web service by invoking methods on the object of proxy class
Service Provider or Publisher
This is the provider of the web service. The service provider implements the service and makes it available on the Internet or intranet.

2. Service Requestor or Consumer
This is any consumer of the web service. The requestor utilizes an existing web service by opening a network connection and sending an XML request.
WebService language = "C#" class = "FirstService" %>
using System;
using System.Web.Services;
using System.Xml.Serialization;
[WebService(Namespace="
public class FirstService : WebService {
[WebMethod]
public int Add(int a, int b)
return a + b; }
public String SayHello()
return "Hello World"; }