C#发送SOAP消息调用WebService丢失参数的问题

举个简单的例子说明一下我的问题：
服务器端有WebService方法如下：
 [WebMethod]
    public string Hello(string name)
    {
        return name + " Say Hello World";
    }-------------------------------------------------------------------------------------------------
创建Soap消息方法：
private byte[] BuildSoap()
        {
            //获取Web服务的命名空间
            string service_nc;
            if (txtNsOfService.Text != null && txtNsOfService.Text.Length > 0)
                service_nc = txtNsOfService.Text;
            else
                service_nc = @"http://tempuri.org";            //创建只包含EnVelop元素的XML文档
            XmlDocument doc = new XmlDocument();
            string xmlStr = "<?xml version='1.0' encoding='utf-8'?>" +
                        "<soap:Envelope " +
                        "xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' " +
                        "xmlns:xsd='http://www.w3.org/2001/XMLSchema' " +
                        "xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/'>" +
                        "</soap:Envelope>";
            doc.LoadXml(xmlStr);
                      //"xmlns:soap='http://schemas.xmlsoap.org/soap/envelope'>"  //soap 1.1            //获取文档顶级Envelope元素
            XmlElement envelope = doc.DocumentElement;            ///////////////////////////////////////////////
            //创建并添加Header元素
            if (lbxHeaderBlocks.Items.Count > 0)
            {
                XmlElement header = doc.CreateElement("soap", "Header", "http://schemas.xmlsoap.org/soap/envelope/");
                foreach (object obj in lbxHeaderBlocks.Items)
                {
                    HeaderBlock hb = (HeaderBlock)obj;
                    //创建报头元素
                    XmlElement block = doc.CreateElement(hb.Prefix, hb.Name, hb.Namespace);
                    if (hb.Actor != null)
                        block.SetAttribute("soap:actor", hb.Actor);
                    if (hb.MustUnderstand)
                        block.SetAttribute("soap:mustUnderstand", "true");
                    block.InnerXml = hb.Content;                    //把报头条目添加到Header元素中
                    header.AppendChild(block); 
                }                //把Header元素添加到Envelope元素中
                envelope.AppendChild(header);
            }            /////////////////////////////////////////////////////
            //创建并添加body元素            if (txtMethodName.Text != null && txtMethodName.Text.Length > 0)
            {
                XmlElement body = doc.CreateElement("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope/");                //向body元素中添加表示方法的结构元素
                //创建方法结构元素
                XmlElement method=doc.CreateElement(txtMethodName.Text,service_nc);
                //向方法结构元素中添加表示参数的元素
                foreach (string p in lbxParams.Items)
                {
                    XmlElement elem = doc.CreateElement(p.Substring(0, p.IndexOf(":")),service_nc);
                    elem.InnerText = p.Substring(p.IndexOf(":") + 1);
                    method.AppendChild(elem);
                }
                //把方法元素添加到Body元素中
                body.AppendChild(method);
                //把Body元素添加到Envelope元素中
                envelope.AppendChild(body);
            }            //把xml文档中的内容保存到byte数组中并返回                    
            return Encoding.UTF8.GetBytes(doc.OuterXml);
        }
-------------------------------------------------------------------------------------------------
窗体加入发送Soap消息 按钮事件：
private void btnSendMessage_Click(object sender, EventArgs e)
        {
            Uri theURL;
            HttpWebRequest httpRequest;
            try
            {
                theURL = new Uri(txtURI.Text);
            }
            catch (UriFormatException ex)
            {
                MessageBox.Show(this, ex.Message);
                txtURI.Focus();
                return;
            }            //以指定的URL创建请求对象
            httpRequest = (HttpWebRequest)WebRequest.Create(theURL);            //构造HTTP POST 消息，并把SOAP消息放到它的消息主体中
            try
            {
                //根据用户的输入设置请求对象的标题字段
                //httpRequest.ContentType = "application/soap+xml; charset=utf-8";
                httpRequest.ContentType = "text/xml; charset=utf-8";                //添加SOAP Action 字段
                string action;
                if (txtNsOfService.Text != null && txtNsOfService.Text.Length > 0)
                    action = txtNsOfService.Text;
                else
                    action = "http://tempuri.org";                //1.1 写
                httpRequest.Headers.Add("SOAPAction", action + "/" + txtMethodName.Text);
                //                //设置请求方法
                httpRequest.Method = "POST";
                //根据用户的输入构造SOAP封装，并把它保存到HTTP请求消息的流中
                byte[] req_soap = this.BuildSoap();
                //设置HTTP请求消息的ContentLength字段
                httpRequest.ContentLength = req_soap.GetLength(0);
                Stream rs = httpRequest.GetRequestStream();
                rs.Write(req_soap, 0, (int)(httpRequest.ContentLength));
                rs.Close();
                
            }
            catch(Exception ex)
            {
                MessageBox.Show(this, ex.Message + "\n堆栈内容:" + ex.StackTrace, "消息发送错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }            //显示HTTP请求消息的内容
            DispRequest(httpRequest);                       ////////////////////////////////////////////
            //从请求对象中获取响应对象            HttpWebResponse httpResponse;
            bool err = false;
            try
            {
                httpResponse = (HttpWebResponse)httpRequest.GetResponse();
                lblResult.ForeColor = Color.Green;
            }
             catch (WebException ex)
            {
                MessageBox.Show(this, ex.Message + "\n堆栈内容:" + ex.StackTrace, "响应错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                httpResponse = (HttpWebResponse)ex.Response;
                err = true;
                lblResult.ForeColor = Color.Red;
            }            //获取响应消息主体的内容
            string body = this.GetResponseBody(httpResponse);
            lblResult.Text = this.GetResult(body, err);            //显示响应消息的内容
            DispResponse(httpResponse, body);  
        }我编译成功后输入参数 name="Tom"服务器只返回了结果 " Say Hello World" 。于是用网卡拦截器截获消息：这是请求：
Content-Type: text/xml; charset=utf-8
SOAPAction: http://tempuri.org/Hello
Host: 133.124.46.19
Content-Length: 306
Expect: 100-continue
Connection: Keep-Alive<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
  <Hello xmlns="http://tempuri.org">
    <name>Tom</name>
  </Hello>
</soap:Body>
</soap:Envelope>这是响应：
HTTP/1.1 200 OK
Server: Microsoft-IIS/5.1
Date: Mon, 14 Sep 2009 00:47:52 GMT
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private, max-age=0
Content-Type: text/xml; charset=utf-8
Content-Length: 343<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
 <HelloResponse xmlns="http://tempuri.org/">
  <HelloResult> Say Hello World</HelloResult>
 </HelloResponse>
</soap:Body>
</soap:Envelope>
经过多次实验，只要是带参数的webService方法，参数都丢失，希望高手帮助解决一下！！不胜感激！！

解决方案 »

  1.   

    大家谁能给看看啊
    第一个方法，其实就是返回的这个soap的二进制数组
    <?xml version="1.0" encoding="utf-8"?> 
    <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 
    <soap:Body> 
      <Hello xmlns="http://tempuri.org"> 
        <name>Tom </name> 
      </Hello> 
    </soap:Body> 
    </soap:Envelope>
    ---------------这里------------
     byte[] req_soap = this.BuildSoap(); 
     //设置HTTP请求消息的ContentLength字段 
     httpRequest.ContentLength = req_soap.GetLength(0); 
     Stream rs = httpRequest.GetRequestStream(); 
     rs.Write(req_soap, 0, (int)(httpRequest.ContentLength)); 
     rs.Close(); 主要是把soap 绑定到httpRequest 上面了
      

  2.   

    http://topic.csdn.net/u/20120816/09/1f5070a1-7627-45aa-ae98-491a6275d558.html
    高手,请帮忙解决下!