How to create and consume simple WCF service in C#.NET
Create and consume simple WCF service in C#.NET
In this example we will learn how to create and consume WCF
service in C#.NET client. The acronym WCF stands for Windows Communication
Foundation. It’s a architectural style to exchange data across two applications.
The beauty of any service is that any client can able to consume it. It might
be any client written by C# or other (probably Java/PHP etc) programming
In this article we will implement one simple WCF service and
we will consume it by one console application. Let’s create the calculator application
step by step.
Step 1:- Create one WCF application in Visual Studio
Once we create any WCF service template, we will find one
interface and one class which implement the interface.
Here is our interface
You can use the "Rename" command on the "Refactor" menu to
change the interface name "ICalculator" in both code and config file
public interface ICalculator
string Calculate(int price, int Qty);
We have placed the ServiceContract attributes over
interface. It implies that this is our interface and it’s going to expose to
outer world and the function Calculate is specified as OperationContract which
means that it’s out function which will be called by external client.
Step 2:- Implement interface to class
Now, we have to implement this interface to class. Have a
look on below code
public class Calculator : ICalculator
public string Calculate(int price, int Qty)
return Convert.ToString(price * Qty);
This is very simple class where we have implemented the
interface. Now, the client can call this service by using the object of
Hence we have finished the server creation part. If we want
to check the service we can see it in browser. Just run the WCF application and
we will find that service is running in browser, if everything is OK.
Here is output of service application.
OK, It’s running fine . We can go to next step .
Step 3:- consume service by client.
In this step we have to consume WCF service by client. We
will create one small console application to do same. Let’s create one console
application and add service reference.
Go to Add Service reference
option and discover the service. We will get below screen.
Once you press OK ,it will add proxy in our client to
consume service. And we will see that the service reference has added in our
Step 4:- Call to service
This is the last step of application. Here we will consume
static void Main(string args)
PriceCalculator.CalculatorClient O = new CalculatorClient();
Console.WriteLine("Price is :- " + O.Calculate(100 ,10));
The consumption part is very simple. Just
we have created the object of service class and like normal function invocation
we are calling service method.
The output is here.
In this tutorial we have learned how to create and consume WCF service in C#.NET application. Hope you have understood the concept.