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c# - Adding SOAP headers to ASMX service requests

We were given a set of ASMX services to consume. We have no say in how these services are implemented. We have generated a number of proxies with wsdl.exe tool but for some reason unknown to me, these generated proxies don't have any means for including custom SOAP headers.

Basically, I need a way to add custom header data to various service calls.

I am aware of existence of SoapExtension class but unfortunately we're not allowed to use that due to supposed performance issues.

Are there any alternative ways of customizing/adding header data in SOAP requests?

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you can use SoapHeader / SoapUnknownHeader to extend the generated proxy for this:

EDIT - as per comments:

To include a custom namespace see the sample code here.


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