利用WSDL文档在.NET平台下的WebService调用的例子

HttpWebRequest httpRequest;
            try
            {
            
                httpRequest=(HttpWebRequest)WebRequest.Create(this.cbox_url.Text);

            }
            catch(SystemException se)
            {
                MessageBox.Show(this,se.Message,"Read WSDL Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
                return;
            }
            httpRequest.Method="GET";
            HttpWebResponse httpResponse;
            try
            {
            
                httpResponse=(HttpWebResponse)httpRequest.GetResponse();
            }
            catch(SystemException se)
            {    
                MessageBox.Show(this,se.Message,"Read WSDL Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
                return;
            }
            ServiceDescription wsdl;
            try
            {
                wsdl=ServiceDescription.Read(httpResponse.GetResponseStream());
            }
            catch(SystemException se)
            {
                MessageBox.Show(this,se.Message,"Read WSDL Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
                return;
            }
            finally
            {
                httpResponse.Close();

            }
            //First Step:  View "Service" 元素，第一步，检查service元素
            int servicesCount=wsdl.Services.Count;
            ServicesDescription[] sd=new ServicesDescription[servicesCount]; //这个类是用来封装所有的信息的
            FunctionDescription fd=null;
            Service service=null;
            //Port portGet=null;//这里的端口就是协议,httpGet,httpPost,soap
            
            
            if (this.cbox_ReqType.SelectedItem.ToString()=="Soap") 
            {
                this.ActionType=SOAP;
                this.AddressBindingString="SoapAddressBinding";
                for(int i=0;i<servicesCount;i++)
                {
                    service=wsdl.Services[i];
                    sd[i]=new ServicesDescription();
                    sd[i].ServiceName=service.Name;
                    try
                    {
                        for(int j=0;j<service.Ports[service.Name+this.ActionType].Extensions.Count;j++)
                        {
                            if (service.Ports[service.Name+this.ActionType].Extensions[j] is SoapAddressBinding)
                            {                                                                                        
                                sd[i].ServiceAddress=((SoapAddressBinding)service.Ports[service.Name+this.ActionType].Extensions[j]).Location;
                                break;
                            }
                        }
                    }
                    catch(SystemException se)
                    {
                        MessageBox.Show(se.Message);
                    }
                    //服务为,服务地址,服务的协议,服务提供的方法,服务方法要传递的参数
                    //获取,port所对应binding
                    System.Web.Services.Description.Binding bindGet=wsdl.Bindings[service.Ports[service.Name+this.ActionType].Binding.Name];
                    //OperationBinding function=null;
                    for(int k=0;k<bindGet.Operations.Count;k++)
                    {
                        fd=new FunctionDescription(bindGet.Operations[k].Name);
                        fd.FunctionAddress=sd[i].ServiceAddress+"/"+bindGet.Operations[k].Name;
                        sd[i].Functions.Add(fd);
                    }
                    PortType ptGet=wsdl.PortTypes[bindGet.Type.Name];
                    Operation op=null;
                    System.Web.Services.Description.Message msg=null;
                    for(int temp=0;temp<ptGet.Operations.Count;temp++)
                    {
                        ArrayList msgList=new ArrayList();
                        for(int pp=0;pp<ptGet.Operations[temp].Messages.Count;pp++)
                        {
                            
                            if(ptGet.Operations[temp].Messages[pp] is OperationInput)
                            {
                                msgList.Add(wsdl.Messages[ptGet.Operations[temp].Messages[pp].Message.Name]);

                            }

                        }
                        string res="";
                        res+="方法："+ptGet.Operations[temp].Name+"的参数说明如下：\n";
                        res+="输入的参数个数为："+msgList.Count+"个；\n他们分别为：\n";

                        for(int iii=0;iii<msgList.Count;iii++)
                        {
                            msg=(System.Web.Services.Description.Message)msgList[iii];
                            for(int jj=0;jj<msg.Parts.Count;jj++)
                            {
                                if(msg.Parts[jj].Element.IsEmpty)
                                {
                                    res+="参数的类型为："+stringSpilt(msg.Parts[jj].Type.ToString())+"  参数名称为："+msg.Parts[jj].Name;
                                    res+="\t\r\n";
                                }
                                else
                                {
                                    res+="参数的类型为："+stringSpilt(msg.Parts[jj].Element.ToString())+"  参数名称为："+msg.Parts[jj].Name;
                                    res+="\t\r\n";

                                }
                            }
                            
                        }
                        MessageBox.Show(res,"Information",MessageBoxButtons.OK,MessageBoxIcon.Information);
                    }
                    
                }
            }

        以上就是核心的代码，主要是利用.NET自动生成的WSDL文档格式的特点，对文档进行解析，同时得到Web服务中所有函数的元数据信息，以便进一步对其进行调用。
        在调用时，我这里使用的是HTTP POST协议。
        具体的大家有看不太懂得可以给我留言
        本人是出学，请大家指教