HttpWebRequest SOAPAction url/command

[observ]

Hi,

I have an issue, with not being able to set the the correct header

here is the operation from the WSDL:

- <wsdl:operation name="findRegistrationByID" parameterOrder="registrationID">
  <wsdl:input message="impl:findRegistrationByIDRequest" name="findRegistrationByIDRequest" /> 
  <wsdl:output message="impl:findRegistrationByIDResponse" name="findRegistrationByIDResponse" /> 
  </wsdl:operation>

This is also from WSDL:

- <wsdl:operation name="findRegistrationByID">
  <wsdlsoap:operation soapAction="urn://url/findRegistrationByID" /> 
- <wsdl:input name="findRegistrationByIDRequest">
  <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="urn://url/" use="encoded" /> 
  </wsdl:input>
- <wsdl:output name="findRegistrationByIDResponse">
  <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="urn://url/" use="encoded" /> 
  </wsdl:output>
  </wsdl:operation>

here is my code:
Case 1:

req.Headers.Add("SOAPAction:", "urn://url/findRegistrationByID");

Error: Invalid HTTP Header characters. Parameter name:name
Case 2:

req.Headers.Add("SOAPAction", "urn://url/findRegistrationByID");

Error: This property is not implemented by this class.
Case 3:

req.Headers.Add("SOAPAction");

Error: Specified value does not have a ':' separator. Parameter name: header
Case 4:

req.Headers.Add("SOAPAction:");

Error: This property is not implemented by this class.
Case 5:
Without header
Error: The remote server returned an error: (500) Internal Server Error.

I don't have access to the server logs, and the SOAP request is built correctly. Can you point me in the right direction?

[thines01]

Using the regular Web Services construction is not an option?

[observ]

I want to go this road :)

[thines01]

Can you make another app that uses WS and just compare how it does the soap header?

[observ]

Sorry, i can't seem to be able to create the request using an Web Reference. This is why i am trying with this method.