Windows Communication Foundation (WCF) programming using Visual Studio
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The document describes how to create a simple WCF service in Visual Studio 2013 to perform mathematical calculations. It involves creating a WCF service application project, adding a WCF service item, implementing methods to add and subtract two numbers, building and running the service, and then consuming the service methods from an ASP.NET web form to display the results of calculations entered by the user at runtime.
Windows Communication Foundation (WCF) programming using Visual Studio
- 1. Windows Communication Foundation (WCF) using Visual Studio 2013 Now, let us see how to create simple WCF to do simple mathematical calculations. I am using Visual Studio 2013 to create this project. 1. Invoke Visual Studio 2. Select New Project 3. Under Installed templates, choose Web → WCF → WCF Service Application 4. Give a name to this project. I have named this project as mathematics 5. Press OK button 6. Now, from Solution Explorer window, delete IService1.cs and Service1.cs files. See the below picture. 7. Now, Right click on your project – Mathematics 8. Select Add → New Item →WCF Service 9. Give some name to this service. I have names it as maths. Notice that Imaths.cs and maths.cs files created automatically and you can see them from the Solution Explorer window. 10. Now open Imaths.cs file by double clicking on it 11. Look for void DoWork() method. Remove this method and add two methods add and sub to return addition and subtraction of two numbers as shown (see the next page) Delete these files
- 2. 12. Now, open maths.cs file double clicking on that file 13. Remove method public void DoWork() method. In its place add the code as shown below:
- 3. 14. Like asmx web services, here too you can build this code and test by selecting Build → Build Solution option. Try it yourself an check whether system displays any error messages or not. 15. You can also run these programs by clicking on Start button. Try it yourself. Consuming WCF methods from Now, let us see how to consume the above created methods from a web page. 1. Click on Project – Mathematics. 2. Select Add → New Item → Web Form. Give some name to this webform. I named it as calculate 3. Change to Design mode 4. Add a Button to this form. 5. Double Click on the button 6. In the Button_click event, add the following codes. 7. Now, run the web page to display the sum and difference of 200 and 100. Try it yourself: - Instead of passing hard coded values 200 and 100, please add two textboxes in the webform so that users can enter two numerical values at runtime. - BK Dharmaraju, Bangalore, India – has around 30 years of experience in the field of IT.