SOAP client in .NET – references or examples? [closed]

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Prerequisites: You already have the service and published WSDL file, and you want to call your web service from C# client application.

There are 2 main way of doing this:

A) ASP.NET services, which is old way of doing SOA
B) WCF, as John suggested, which is the latest framework from MS and provides many protocols, including open and MS proprietary ones.

Adding a service reference step by step

The simplest way is to generate proxy classes in C# application (this process is called adding service reference).

  1. Open your project (or create a new one) in visual studio
  2. Right click on the project (on the project and not the solution) in Solution Explorer and click Add Service Reference

  3. A dialog should appear shown in screenshot below. Enter the url of your wsdl file and hit Ok. Note that if you’ll receive error message after hitting ok, try removing ?wsdl part from url.

    add service reference dialog

    I’m using http://www.dneonline.com/calculator.asmx?WSDL as an example

  4. Expand Service References in Solution Explorer and double click CalculatorServiceReference (or whatever you named the named the service in the previous step).

    You should see generated proxy class name and namespace.

    In my case, the namespace is SoapClient.CalculatorServiceReference, the name of proxy class is CalculatorSoapClient. As I said above, class names may vary in your case.

    service reference proxy calss

  5. Go to your C# source code and add the following 

    using WindowsFormsApplication1.ServiceReference1

  6. Now you can call the service this way. 

    Service1Client service = new Service1Client();
int year = service.getCurrentYear();

Hope this helps. If you encounter any problems, let us know.

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