SOAP WSDL GET_FILE INTERGRATION with .NET Core C# Application

Does anybody how to set up a proxy/webservice in .NET....we are getting anonymous authentication error even though we do path user id/password in request header....

Below are URI we are using and c# code...

URI:  "Uri": "http://picmscnt02/idcws/GenericSoapPort?WSDL",

                var generic = new RollsRoycePortal.Generic();

                var service = new RollsRoycePortal.Service();

                var serviceDocument = new RollsRoycePortal.ServiceDocument();

                var user = new RollsRoycePortal.Container();

                string userName = "webIntranet", userPassword = "intranetweb1";

                // set properties for the request

                generic.webKey = "cs";

                service.IdcService = "GET_FILE";

                var field0 = new Field();

                field0.name = "dID";

                field0.Value = "3538866";

                var field1 = new Field();

                field1.name = "RevisionSelectionMethod";

                field1.Value = "LatestReleased";