//</snippet1> private void AuthenticateWithUserName() { //<snippet2> CalculatorClient client = new CalculatorClient("default"); //</snippet2> //<snippet3> client.ClientCredentials.UserName.Password = ReturnPassword(); //</snippet3> //<snippet4> client.ClientCredentials.UserName.UserName = ReturnUsername(); //</snippet4> //<snippet5> double value1 = client.Add(100, 15.99); //</snippet5> //<snippet6> client.Close(); //</snippet6> }