Web Services

In .NET, web services can be created and managed by ASP.NET. By using web services in ASP.NET, we can easily create and host various types of services on the internet, such as banking services, e-commerce services, or weather information services.

Technologies required to create web services in .NET

WSDL (Web Services Description Language): WSDL provides a description of the features of web services using XML.

WSDL is used to tell what a web service does and how it can be accessed.

UDDI (Universal Description, Discovery, and Integration): UDDI is a directory service that helps in discovering web services.

Various web services can be registered in UDDI, so that consumers can discover and use them.

XML (Extensible Markup Language): XML is used to transport data, and it is a standardized language that makes data structured and understandable.

Web services in .NET run on the HTTP protocol and exchange data between a server and a client through various components. The way it works is as follows:

ASP.NET is used to create a web service in .NET. A simple example of a web service is given below, in which a calculator service has been created that adds two numbers.

using System.Web.Services;

[WebService(Namespace = "http://www.example.com/")]

[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

public class CalculatorService : WebService

{

    [WebMethod]

    public int Add(int a, int b)

    {

        return a + b;

    }

}