# Using .Net SOAP service

**URL:** <https://www.ruby-forum.com/t/using-net-soap-service/110938>\
**Category:** Ruby\
**Created:** [August 1, 2007, 7:01am UTC](https://www.ruby-forum.com/t/using-net-soap-service/110938 "2007-08-01T07:01:24Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Hasham](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/2bfe46/32.png) [@Hasham](https://www.ruby-forum.com/u/Hasham)\
**Post date:** [August 1, 2007, 7:01am UTC](https://www.ruby-forum.com/t/using-net-soap-service/110938/1 "2007-08-01T07:01:24Z")

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Hi,

I am getting this error while trying to access .NET based SOAP Web  
service

#SOAP::Mapping::Object:0xb7c86218:  
System.Web.Services.Protocols.SoapException: Server was unable to  
process request. —\> System.NullReferenceException: Object reference  
not set to an instance of an object. (SOAP::FaultError)

My code to access this service is:

require ‘soap/wsdlDriver’  
wsdl = '[HugeDomains.com](http://www.dotnetsite.com/MyService/Service.asmx?WSDL)  
driver = SOAP::WSDLDriverFactory.new(wsdl).create\_rpc\_driver  
puts driver.GetVals(‘136’)

I have tried many things but still i am not able to get this code  
working. Please tell what should i do to get this working

---

<div class="post-metadata">

**Author:** ![Hasham](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/2bfe46/32.png) [@Hasham](https://www.ruby-forum.com/u/Hasham)\
**Post date:** [August 1, 2007, 7:26am UTC](https://www.ruby-forum.com/t/using-net-soap-service/110938/2 "2007-08-01T07:26:26Z")

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Try putting the ‘136’ in a SOAP::SOAPString or SOAP::SOAPInt:

p driver.GetVals(SOAP::SOAPString.new(“136”))  
or  
p driver.GetVals(SOAP::SOAPInt.new(136))

If that doesn’t work, i try using the wsdl2ruby generator to create  
the class stubs. It will create a class for each parameter. In your  
case, it will be something like:

p driver.GetVals( GetVals.new(SOAPString.new(“136”)))

-Ben

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<div class="post-metadata">

**Author:** ![Hasham](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/2bfe46/32.png) [@Hasham](https://www.ruby-forum.com/u/Hasham)\
**Post date:** [August 1, 2007, 2:41pm UTC](https://www.ruby-forum.com/t/using-net-soap-service/110938/3 "2007-08-01T14:41:23Z")

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Thanks Ben,

I finally figured out the problem i had to pass arguments as hash like  
this:

puts driver.GetVals(:parameter =\> “136”)

---

<div class="post-metadata">

**Author:** ![Hasham](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/2bfe46/32.png) [@Hasham](https://www.ruby-forum.com/u/Hasham)\
**Post date:** [August 2, 2007, 3:22am UTC](https://www.ruby-forum.com/t/using-net-soap-service/110938/4 "2007-08-02T03:22:46Z")

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Hi,

Thanks Ben for answering.

Hasham wrote:

> I finally figured out the problem i had to pass arguments as hash like  
> this:
> 
> puts driver.GetVals(:parameter =\> “136”)

FYI: Generating stub files with wsdl2ruby.rb against a WSDL could help  
to understand what arguments you should pass.

% wsdl2ruby.rb --wsdl Foo.wsdl --type client --force

Regards,  
// NaHi

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