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Simon Fell writes: Sjoerd's example doesn't specify the namespace URI, come on guys post some thing that's (a) equivilent to the other examples, (b) is callable by the sample client code. Some of those lines of overhead are nothing to do with web services but just the fact that C# is a OO language.
Dave does have a point. In a very real sense, the only logic in this example is:
"Hello " + name
One could imagine a system in which this information, placed in a file named "/webservice/Hello/sayHello" would do everything necessary to be callable by the sample client code.