Creating Basic WCF web service using C# .Net

We can create WCF Web service for communicating the Any Application with different resources from internet protocols .A web service is a web application which is basically a class consisting of methods that could be used by other applications. It also follows a code-behind architecture such as the ASP.NET web pages, although it does not have a user interface.

This is the most important thing about the  of Web Services. Web Services typically work outside of private networks, offering developers a non-proprietary route to their solutions. Services developed are likely, therefore, to have a longer life-span, offering better return on investment of the developed service. Web Services also let developers use their preferred programming languages. In addition, thanks to the use of standards-based communications methods, Web Services are virtually platform-independent

Web Services provide not a component-based model of application development, but the closest thing possible to zero-coding deployment of such services. This makes it easy to reuse Web Service components as appropriate in other services. It also makes it easy to deploy legacy code as a Web Service.

Web Services allow the business logic of many different systems to be exposed over the Web. This gives your applications the freedom to chose the Web Services that they need. Instead of re-inventing the wheel for each client, you need only include additional application-specific business logic on the client-side. This allows you to develop services and/or client-side code using the languages and tools that you want.

Web Services provide not a component-based model of application development, but the closest thing possible to zero-coding deployment of such services. This makes it easy to reuse Web Service components as appropriate in other services. It also makes it easy to deploy legacy code as a Web Service.

There are following easy steps to create a basic wcf web service through in C# in visual studio 2017

File => New Project 

Visual C# => WCF =>WCF Service Library

Click OK

Visual Studio automatically generate an interface and Class 

Remove all Codes that Visual Studio generate automatically and ADD four Arithmetic Operation Method only signature not full body in interface

Implement the interfaces method in Service1 Class

After Implementing Interface your Class would be like this

Now define functionalities of Methods

 Now Build and run the project Test Client Should show like this

Clikc on AddNumbers give parameter of values a and b click invoke

Now your web service has been created in the next article we are going to show you how to host web service and consuming web service.. Thank you :)