I am trying to configure out how yo use the httpclient object. Do I need to create Webservice Proxy?

Here is my C# sample, note that this is a working version, I have changed the username and password so that they do not expose to public;



using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.ServiceModel;

using System.ServiceModel.Channels;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

//using WindowsFormsApplication2.cy.com.cosine.dev;

namespace WindowsFormsApplication2

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }



        private void button1_Click(object sender, EventArgs e)

        {

            //token variable to be used in soap header

            string token = "";

            //API key to be used in soap header

            string API_KEY = "HANIAPIKEY";

            //My webService client

            AmanUnionWebService.AmanUnionServiceClient client = new AmanUnionWebService.AmanUnionServiceClient();

            try

            {

                using (new OperationContextScope(client.InnerChannel))

                {



                    

                    //add a soap header for API Key

                    MessageHeader ApiMessageHeader = MessageHeader.CreateHeader("API_KEY", "http://tempuri.org", API_KEY);

                    System.ServiceModel.OperationContext.Current.OutgoingMessageHeaders.Add(ApiMessageHeader);





                    string userName = "username";

                    string passWord = "Pssw.";

                    string Provider = "Provider";

                    //calls the authenticate user

                    //if the authentication is successful it will assign the token variable the appropriate value                   

                    client.AUEAuthenticateUser(userName, passWord, Provider, ref token);

                   

                    //add a soap header for authentication key

                    //I add my token to the soap header

                    MessageHeader AuthMessageHeader = MessageHeader.CreateHeader("AUTH_TOKEN", "http://tempuri.org", token);

                    System.ServiceModel.OperationContext.Current.OutgoingMessageHeaders.Add(AuthMessageHeader);

                    label1.Text = null;

                    DateTime date = DateTime.Today;

                    DataSet companySearchResults = client.AUEGetSearchResults("SAL", "LE", -1 );

                    if (companySearchResults.Tables.Count > 0)

                    {

                        dataGridView1.DataSource = companySearchResults.Tables[0];

                        dataGridView1.Refresh();                   

                    }



 



                }

            }

            catch (Exception ex)

            {

                var message = ex.InnerException.Message;

                label1.Text = message;

                

            }



        }



       

    }

}