calling web service using current users credentials
<p>I have a web service which is on another server than my web server and that service requires a domain user to function. we have NTLM authentication  and my application is a web part. whenever the user enters information and clicks submit the web service is called and it does its job. Can someone please tell me how can I call the web service while passing the users credentials to it.I need to have the credentials of the currently logged in user so that it can authenticate against the web service.</p>

<p>Also i tried the below thing but its not working</p>

<p>I tried  to use <code>CredentialCache.DefaultNetworkCredentials</code> to pass to a
web service. From reading the help this should return the current user domain, username and password.</p>

<p><code>DefaultNetworkCredentials</code> is actually returning blank values e.g</p>

<pre><code>DefaultNetworkCredentials.Domain = ""
</code></pre>
