Add SOAP WSSE Header to Web Link

Question

Add SOAP WSSE Header to Web Link

I am trying to add a WSSE SOAP header to my service call, but most examples focus on WCF. I do not use WCF. I added a web link (WSDL).

I tried various methods without success, for example: override the GetWebRequest method:

    protected override System.Net.WebRequest GetWebRequest(Uri uri)
    {
        string user = "username";
        string pwd = "password";

        System.Net.WebRequest request = base.GetWebRequest(uri);

        string auth = string.Format("Basic {0}", Convert.ToBase64String(System.Text.Encoding.Default.GetBytes(string.Format("{0}:{1}", user, pwd))));
        request.PreAuthenticate = true;
        request.AuthenticationLevel = System.Net.Security.AuthenticationLevel.MutualAuthRequested;
        request.Headers.Add(HttpRequestHeader.Authorization, auth);

        return request;
    }

The WSSE security header should look something like this:

<Security xmlns="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">
         <UsernameToken>
            <Username>username</Username>
            <Password>password</Password>
         </UsernameToken>
      </Security>