How to specify credential in C# when calling a web service?

Hi, I'm using VS2013, and C#
I added a JAVA SOAP web service by going to Add Service Reference, Advanced, Add Web Reference.  It asked for log in credential and I provided it, this web services doesn't authenticate using Windows credential.  It's another set of userid and password I have.

The problem in my C# code right now is when I run the code to call the api, it gives me 401 error saying I'm not authorized.  Am I to supply credential again in my C# code?  How to do that?  Thank you.
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Franck GaspozSoftware Architect, Technical ExpertCommented:
using namespace System.Net, you will found a class named NetworkCredential
you have to instantiate an object of these class providing the good credential informations for your web service, thus pass the object to the web service client object.
if your client web service object is named W for instance, the code should like as following :

W.Credentials = new NetworkCredential("username","password");

thus call the wished method on the W object

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lapuccaAuthor Commented:
This 3rd party vendor Api doesn't use Windows credential.  The Network credential, isn't that just for Windows authentication?

AFter I created this credential, how to I send it to the JAVA SOAP api that I'm calling?  

Thank you.
lapuccaAuthor Commented:
Okay, that same credential without adding he 3rd parameter of domain would seem to work because I no longer gets the 401 error. Of course, now I get a brand new error, but that would be another question.  Thank you.
Franck GaspozSoftware Architect, Technical ExpertCommented:
You're welcome
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