Xmlrpc C# Client To Python Client - Method Does Not Exists

I've searched the web and seen the following question: XML-RPC C# and Python RPC Server I'm trying for a while to do the same, but I fail. I get the exception 'Method 'HelloWorld'

Solution 1:

I found the problem:

1. Syntax problem server.register_function("HelloWorld", HelloWorld) should be server.register_function(HelloWorld, "HelloWorld").

2. This change also didn't work, so I changed the function name form helloWorld to hello and it worked(!)