RE: Problems with namespaces
- From: stcheng@xxxxxxxxxxxxxxxxxxxx (Steven Cheng[MSFT])
- Date: Wed, 02 Jan 2008 10:01:05 GMT
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\viewkind4\uc1\pard\lang2052\f0\fs20 Hi Simon,
\par
\par From your description, you're consuming a .NET webservice in an client app. The webservice has some certain custom data classes which will be shared in both client and service project. However, when you try building the solution, you found that the client app report error about the custom class object(type/namespace mismatch), correct?
\par
\par Based on my experience, this is an expected behavior when your webservice method use a custom class(an this class has also been shared in client project). Because for webservice, the client-side proxy will also generate a delegate class type (together with the proxy class), therefore, the generated webproxy class will use that delegate class type by default( that is the "nsProgram.wsWeb.Data" in your case). And if you try passing the originally defined class type( that is "nsProgram.Data" in your case), it will report type mismatch error.
\par
\par To resolve this , you can consider the following means:
\par
\par 1. Just let client application use the generated proxy class type instead of the originally server-side type
\par
\par 2. You can manually modify the generated proxy class(modify the Reference.cs file ...) and change those "delegate class" to your own class type. However, this update will be erased whenever you update the webreference. To further overcome this problem, you can use partial class feature to put your own customized proxy code logic:
\par
\par #How to customize the Web Service proxy generated by wsdl.exe (or add web references)
\par http://blogs.msdn.com/maximelamure/archive/2007/08/31/how-to-customize-the-web-service-proxy-generated-by-wsdl-exe-or-add-web-references.aspx
\par
\par Sincerely,
\par
\par Steven Cheng
\par
\par Microsoft MSDN Online Support Lead
\par
\par
\par
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\par \pard\li720 --------------------
\par From: "Simon" <none@xxxxxxxx>
\par Subject: Problems with namespaces
\par Date: Wed, 2 Jan 2008 08:54:55 +0100
\par
\par I have problem with namespaces. I have a program that consumes the web
\par service and has for instance names space nsProgram. In this program I have
\par defined several classes that I use for storing and handling internal
\par information. Than I have web service, that also uses the same classes (I
\par included the file as linked external resource). I included this web service
\par as web reference and used name wsWeb.
\par
\par When I am trying to call the web service with parameter that is my class
\par (for instance Data) I can declare this Data class in my main program without
\par any problem, but compiler reports an error:
\par Error 1 The best overloaded method match for
\par 'nsProgram.wsWeb.WebData.Test('nsProgram.wsWeb.Header)' has some invalid
\par arguments
\par Error 2 Argument '1': cannot convert from 'nsProgram.Data' to
\par 'nsProgram.wsWeb.Data'
\par
\par Why is the wsWeb also included for all data types? How can I get around
\par that?
\par
\par Thank you
\par
\par Simon
\par
\par \pard
\par
\par }
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