WebService SoapHeader 无法接收到验证信息

[梅子]

public class SMSSoapHeader : SoapHeader
{
    private string strUserName = string.Empty;
    private string strPassWord = string.Empty;

    public SMSSoapHeader()
    {
        //
        //TODO: 在此处添加构造函数逻辑
        //
    }

    public SMSSoapHeader(string strUserName, string strPassWord)
    {
        this.strUserName = strUserName;
        this.strPassWord = strPassWord;
    }

    #region 构造 用户名|密码
    /// <summary>  
    /// 用户名  
    /// </summary>  
    public string UserName
    {
        get { return strUserName; }
        set { strUserName = value; }
    }
    /// <summary>  
    /// 密码  
    /// </summary>  
    public string PassWord
    {
        get { return strPassWord; }
        set { strPassWord = value; }
    }
    #endregion

    #region 检测是否正确登录
    /// <summary>  
    /// 检测是否正确登录  
    /// </summary>  
    /// <returns></returns>  
    public bool CheckLogin()
    {
        if(strUserName == "11" && strPassWord == "11")
        {
            return true;
        }
        else
        {
            return false;
        }
    }

    #endregion  
}

====================

public class SMSService : System.Web.Services.WebService {
  public SMSSoapHeader myHeader = new SMSSoapHeader();

    public SMSService () {  
    }

    [SoapHeader("myHeader")]
    [WebMethod(Description="余额查询")]
    public string MoneyQuery()
    {
        //判断用户合法性
    string strCheckLogin = CheckLogin();
        if (strCheckLogin != "0")
        {
            return strCheckLogin;
        }

        IDictionary<string, string> strParameter = new Dictionary<string, string>();
        strParameter.Add("username", apiSMSUser);
        strParameter.Add("password", apiSMSPwd);
        string result = getReturnData(apiSMSMoneyUrl, strParameter);
        return result;
    }
#region 判断用户是否合法
   public string CheckLogin()
    {
        try
        {
            if (myHeader.CheckLogin())
            {
                return "0";
            }
            else
            {
                return "无效的身份验证，请重试！";
            }
        }
        catch (Exception ex)
        {
            return "程序发生错误，请重新验证身份。错误信息：" + ex.Message;
        }
    }
    #endregion
}

==========

public partial class _Default : System.Web.UI.Page
{
        private string apiSMSUser = ConfigurationManager.AppSettings["SMSAccount"].ToString().Trim();           //账号
    private string apiSMSPwd = ConfigurationManager.AppSettings["SMSPwd"].ToString().Trim();                //密码
    private localhost.SMSService sms = null;

    protected void Page_Load(object sender, EventArgs e)
    {
        sms = new localhost.SMSService();
        //身份验证
        localhost.SMSSoapHeader smsHeader = new localhost.SMSSoapHeader
        {
            UserName = apiSMSUser,
            PassWord = apiSMSPwd
        };
        sms.SMSSoapHeaderValue = smsHeader;
    }
protected void Button1_Click(object sender, EventArgs e)
    {
        string result = sms.MoneyQuery();
        this.lblResult.Text = result;
    }
}

以上Webservice的请求，返回到SMSService.MoneyQuery的时候SMSSoapHeader 总是为空，好像是被new了一下。但是我不知道具体问题到底出在哪？求大神指点

[梅子]

难道是让我无满意结贴么？

[serf]

是不是要在servicecontract标注sessionmode，否则会重建的。类似于JAVAEE，是无状态的。

[梅子]

我也不知道怎么解决的，代码重新贴一下就好了