using System;using System.Data;using System.Configuration;using System.Runtime.InteropServices;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.Services;using System.Web.Services.Protocols;/// <summary>///klmywgSoapHeader 的摘要说明/// </summary>public class klmywgSoapHeader:SoapHeader{    public string UserName;    public string PassWord;    private string m_UserName;    private string m_PassWord;    [DllImport("DataEncrypt.dll")]    public static extern string DESEncrypt(string Value, string Key);    [DllImport("DataEncrypt.dll")]    public static extern string DESUnEncrypt(string Value, string Key);    string key;    public klmywgSoapHeader()    {        key = ConfigurationManager.AppSettings["key"].ToString();        m_UserName = ConfigurationManager.AppSettings["WebServiceUsername"].ToString();        m_PassWord = ConfigurationManager.AppSettings["WebServicePassword"].ToString();        m_PassWord = DESUnEncrypt(m_PassWord, key);            }    public string Validate()    {        PassWord = DESUnEncrypt(PassWord,key);        if (m_UserName == UserName && m_PassWord == PassWord)        {            return "true";        }        else        {            return "do not have permission";        }    }}

using System;using System.Web;using System.Web.Services;using System.Web.Services.Protocols;[WebService(Namespace = "http://tempuri.org/")][WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]// 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。// [System.Web.Script.Services.ScriptService]public class Service : System.Web.Services.WebService{    public klmywgSoapHeader header = new klmywgSoapHeader();    public Service () {        //如果使用设计的组件，请取消注释以下行         //InitializeComponent();     }    [WebMethod]    [SoapHeader("header")]    public string HelloWorld() {       string result= header.Validate();       if (result == "true")       {           return "Hello World";       }       else           return result;    }    }

using System;using System.Configuration;using System.Data;using System.Linq;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Xml.Linq;public partial class _Default : System.Web.UI.Page {    localhost.klmywgSoapHeader header = new localhost.klmywgSoapHeader();    localhost.Service service = new localhost.Service();        protected void Page_Load(object sender, EventArgs e)    {        header.UserName = ConfigurationSettings.AppSettings["WebServiceUsername"].ToString();        header.PassWord = ConfigurationSettings.AppSettings["WebServicePassword"].ToString();        service.klmywgSoapHeaderValue = header;        string result = service.HelloWorld();        Response.Write(result);    }}