Append soap header in asp.net web service

Web Service :

using System;
using System.Collections;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Xml.Linq;

/// <summary>
/// WebService 的摘要描述
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// 若要允許使用 ASP.NET AJAX 從指令碼呼叫此 Web 服務，請取消註解下一行。
// [System.Web.Script.Services.ScriptService]
public class WebService : System.Web.Services.WebService
{

    public WebService()
    {
        //如果使用設計的元件，請取消註解下行程式碼 
        //InitializeComponent(); 
    }

    public AuthHeader authHeader;

    [WebMethod]
    [SoapHeader("authHeader")]
    public string Concat(string key, string value)
    {
        if (IsValidToken1())
            return string.Format("({0},{1})", key, value);
        else
            throw new Exception("Not valid token1");
    }

    private bool IsValidToken1()
    {
        //if (authHeader.Token1 == "") ;
        return true;
    }

}

/// <summary>
/// 定義自行加入的header認證
/// </summary>
public class AuthHeader : SoapHeader
{
    private string _Token1;

    public string Token1
    {
        get { return _Token1; }
        set { _Token1 = value; }
    }
}

Web Service client :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication
{
    class CallWebService
    {
        /// <summary>
        /// .net framework 2.0
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        /// <returns></returns>
        public static string Call20(string key, string value)
        {
            ConsoleApplication.WSforTest.AuthHeader authHeader = new ConsoleApplication.WSforTest.AuthHeader();
            authHeader.Token1 = "TestToken1";

            ConsoleApplication.WSforTest.WebServiceForTest wsTest = new ConsoleApplication.WSforTest.WebServiceForTest();
            wsTest.AuthHeaderValue = authHeader;
            return wsTest.Concat(key, value);
        }

        /// <summary>
        /// .net framework 3.5
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        /// <returns></returns>
        public static string Call35(string key, string value)
        {
            ConsoleApplication.WSforTest35.AuthHeader authHeader = new ConsoleApplication.WSforTest35.AuthHeader();
            authHeader.Token1 = "TestToken1";

            ConsoleApplication.WSforTest35.WebServiceForTestSoapClient client = new ConsoleApplication.WSforTest35.WebServiceForTestSoapClient();
            return client.Concat(authHeader, key, value);
        }
    }
}