Hi Moondady,
Welcome to the ASPNET newsgroup.
From your description, I understand you've developed an ASP.NET webservice
which is consumed by a winform client application. Both ones are
constructed under .net framework 1.1. Recently, you upgrade the webservice
from ASP.NET 1.1 to ASP.NET 2.0, after that the 1.1 winform client broke
and reported the "Server did not recognize the value of HTTP Header
SOAPAction" error ,correct?
Based on my experience, since http SoapAction headeris used to identify the
webmethod of a certain webservice, the problem is likely due to the client
application is sending an unexpected SoapAction header to the service. And
in ASP.NET webservice, the SoapAction header will be determined by both the
service's namespace and the Action property set on the WebMethod attribute.
#WebServiceAttribute.Namespace Property
http://msdn2.microsoft.com/en-us/lib...ebserviceattri
bute.namespace(VS.80).aspx
#SoapDocumentMethodAttribute.Action Property
http://msdn2.microsoft.com/en-us/lib...rotocols.soapd
ocumentmethodattribute.action.aspx
Have you explicitly set this property for your webservice and the
webmethod? Also, for general troubleshooting, you can create a .net 2.0
webservice proxy to see whether it can work correctly. If it works, you can
compare the 2.0 client's generated proxy code with 1.1 client's code or you
can use some trace tools to capture the raw SOAP xml message sent by
different clients to find the difference between them.
Hope this helps.
Regards,
Steven Cheng
Microsoft Online Community Support
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