Create WCF Web Service in Visual Studio

Windows Communication Foundation (WCF) web services can be created in Visual Studio. Note these web services replace the old asmx web services.

To create a web service in Visual Studio do the following.

Create a new project in Visual Studio and select WCF Service Application:

This creates the solution:

Delete the existing Service1.svc and IService1.cs and add a new WCF Service:

This will create these 2 files again. Note the file contains the ServiceContract and the OperationContract:

The DoWork method is created as a shell:

We will implement a Hello World web service. Change DoWork() to return a string “Hello World”:

Press F5 and Invoke. The string Hello World is returned:

To test consuming and invoking this through code, let’s create a new console app and add it to the solution:

Select Add Service Reference:

Click Discover to pick up the service created:

Add the following code. Add a using statement for the web service, and create an instance of ServiceClient. Display the Hello World output in the console.

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Carl de Souza Enterprise Architect at Microsoft · AI Technology Expert