getting a XML output from a WebMethod function -- dotnet distributed apps

Luxspes [MCP]
11/22/2005 8:47:30 PM

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Haven't heard of that... the DataSet "is" XML...

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Perhaps Public function(args) as String ? (XML... is finally a string of
characters...)

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AFAIK it is not possible to return an object of type "XML" you have to
return a DataSet... or a string, or an integer... or any other
serializable object...

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For what exactly do you want to use the webservice? (interop with what?)

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Paul Gielens
11/27/2005 12:00:00 AM

Hi Ross,

Actually... imagine the following service operation:

[WebMethod]
public DataSet FindCustomerOrder(string customerId) {}

With an ASP.NET Web Services you can create a full-blown web service by
decorating an arbitrary method with the WebMethod attribute. The .NET Web
Services infrastructure will then serialize the resulting DataSet to an XML
message and pass it on the wire. The consumer of your service (non .NET
consumer) receives the XML message as plain text. In case you use the Web
Service wizard in Visual Studio.NET it will autogenerate a proxy which lets
you believe objects are passed across the wire but underneath the
infrastructure takes care of serializing/deserialising your objects
instances to XML messages and visa versa. I would certainly advise you to
read up on ASP.NET Web Service internals to get a complete picture
(http://msdn.microsoft.com/webservices/).

Whether or not it is the right thing to use .NET specific objects in your
web services is another discussion.

Best regards,
Paul Gielens

Visit my blog @ http://weblogs.asp.net/pgielens/
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dotnet distributed apps : getting a XML output from a WebMethod function