Webservice开发、引用

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

        public MySoapHeader() { }

        public MySoapHeader(string username, string password)
        {
            this.strUserName = username;
            this.strPassWord = password;
        }

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

        #endregion

        #region 检测是否正确登录
        /// 
  
        /// 检测是否正确登录  
        ///   
        ///   
        public bool ValideUser(out string  msg )
        {
            msg = "";
            if (strUserName == "admin" && strPassWord == "123456")   //在这里设置身份验证的账号和密码
            {
                return true;
            }
            else
            {
                msg = "您无权调用次服务，请联系管理员！";
                return false;
            }
        }

        #endregion
    }

 　　　　public MySoapHeader header = new MySoapHeader (); ////定义用户身份验证类变量header

        [System.Web.Services.Protocols.SoapHeader("header")] 
        [WebMethod]     
        public string GetUserName(string userID)
        {
            string msg = "";
            if (!header.ValideUser(out msg))   //验证
            {
                return msg;
            }

            var data = new DALwbstest.UuserOP().GetUser(userID);
            if (data != null)
            {
                return data.UsernameCN;
            }
            else
            {
                return "没有此人";
            }

        }

         　　WebReference.Npomwbs webClient = new Npomwbs();           
            MySoapHeader head = new MySoapHeader ();
            head.UserName = "admin"; 　　　　　　　　　　　　　　//在webservice里设置的账号和密码
            head.PassWord = "123456";
            webClient.MySoapHeaderValue = head;

            string name = webClient.GetUserName(txtID.Text);    //调用需要验证的方法

 　　　　　　WebReference.Npomwbs webClient = new Npomwbs();
            webClient.Credentials = new System.Net.NetworkCredential("admin","123456"); //这里就是你刚填写的账号和密码

            string name = webClient.GetUserName(txtID.Text); // 调用方法