Background:
I am creating a webservices site which will provide many types of simple services over SOAP and possibly other protocols too. The goal is to make it easy to do for example conversions, RSS parsing, spam checks and many other types of work. The site will be targeted mostly at beginner developers.
My Problem:
I have never developed any C#, or .NET for that matter. I did hack some VB6 many years ago but that's it. Now I need some examples of doing RPC calls over SOAP in C#. I have tried to search the web, and Stack Overflow, to find this but didn't find many resources, and I have no idea how to rank the resources (which are old? which are incorrect? etc).
I have created a simple example service, which is called like this in PHP:
<?php
$client = new SoapClient('http://webservi.se/year'); //URL to the WSDL
echo $client->getCurrentYear(); //This method returns an integer, called "year"
?>
I now want to call this method as easily as possible in C#. All references and examples are very welcome. Where do I begin? Which classes/modules/whatever can I utilize?
The solution does not have to involve SOAP at all if there are better communication frameworks (the back end is meant to be extensible), but note that the server side is implemented in PHP on Unix so proprietary solutions from Microsoft are out of the question on the server side.
Note that I need this so I can write documentation possible for J. Random Web Developer to follow (even if they are on shared web hosting). I therefore think the best approach should be to do this in code only, but even other ways of doing this are of course welcome.
This question is related to
c#
wcf
soap
soap-client
Take a look at "using WCF Services with PHP". It explains the basics of what you need.
As a theory summary:
WCF or Windows Communication Foundation is a technology that allow to define services abstracted from the way - the underlying communication method - they'll be invoked.
The idea is that you define a contract about what the service does and what the service offers and also define another contract about which communication method is used to actually consume the service, be it TCP, HTTP or SOAP.
You have the first part of the article here, explaining how to create a very basic WCF Service.
More resources:
Aslo take a look to NuSOAP. If you now NuSphere this is a toolkit to let you connect from PHP to an WCF service.
Here you can find a nice tutorial for calling a NuSOAP-based web-service from a .NET client application. But IMO, you should also consider the WSO2 Web Services Framework for PHP (WSO2 WSF/PHP) for servicing. See WSO2 Web Services Framework for PHP 2.0 Significantly Enhances Industry’s Only PHP Library for Creating Both SOAP and REST Services. There is also a webminar about it.
Now, in .NET world I also encourage the use of WCF, taking into account the interoperability issues. An interoperability example can be found here, but this example uses a PHP-client + WCF-service instead of the opposite. Feel free to implement the PHP-service & WFC-client.
There are some WCF's related open source projects on codeplex.com that I found very productive. These projects are very useful to design & implement Win Forms and Windows Presentation Foundation applications: Smart Client, Web Client and Mobile Client. They can be used in combination with WCF to wisely call any kind of Web services.
Generally speaking, the patterns & practices team summarize good practices & designs in various open source projects that dealing with the .NET platform, specially for the web. So I think it's a good starting point for any design decision related to .NET clients.
If you can get it to run in a browser then something as simple as this would work
var webRequest = WebRequest.Create(@"http://webservi.se/year/getCurrentYear");
using (var response = webRequest.GetResponse())
{
using (var rd = new StreamReader(response.GetResponseStream()))
{
var soapResult = rd.ReadToEnd();
}
}
I have done quite a bit of what you're talking about, and SOAP interoperability between platforms has one cardinal rule: CONTRACT FIRST. Do not derive your WSDL from code and then try to generate a client on a different platform. Anything more than "Hello World" type functions will very likely fail to generate code, fail to talk at runtime or (my favorite) fail to properly send or receive all of the data without raising an error.
That said, WSDL is complicated, nasty stuff and I avoid writing it from scratch whenever possible. Here are some guidelines for reliable interop of services (using Web References, WCF, Axis2/Java, WS02, Ruby, Python, whatever):
</rant>
:)
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.
The simplest way is to generate proxy classes in C# application (this process is called adding service reference).
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.
I'm using http://www.dneonline.com/calculator.asmx?WSDL as an example
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.
Go to your C# source code and add the following
using WindowsFormsApplication1.ServiceReference1
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.
You're looking in the wrong place. You should look up Windows Communication Framework.
WCF is used both on the client and on the server.
Source: Stackoverflow.com