vc2008 call webservice

using  System;
using  System.Collections.Generic;
using  System.Linq;
using  System.Web;
using  System.Web.Services;
using  System.Web.Services.Protocols;

namespace  Soap
{
    [WebService(Namespace  =   " http://Fantasy/WebServiceDemo/ " )]
    [System.Web.Services.Protocols.SoapRpcService]
     public   class  Service : System.Web.Services.WebService
    {
         public  Service()
        {

        }

        [WebMethod]

         public   int  AddNumbers( int  NumberOne,  int  NumberTwo)
        {

             return  NumberOne  +  NumberTwo;

        }
       
    }
}

#include  " stdafx.h "
#include  < stdio.h >
#include  < stdlib.h >

// 先导入msxml4.dll，再导入mssoap30.dll
#import  " msxml4.dll "  
#import  " C:/Program Files/Common Files/MSSoap/Binaries/mssoap30.dll "  /
    exclude( " IStream " ,  " IErrorInfo " ,  " ISequentialStream " ,  " _LARGE_INTEGER " , /
     " _ULARGE_INTEGER " ,  " tagSTATSTG " ,  " _FILETIME " )
using   namespace  MSXML2;
using   namespace  MSSOAPLib30; 

void  Add2( int  No1, int  No2)

{
     // char *_itoa( int value, char *string, int radix );

     char  str1[ 10 ],str2[ 10 ];

    itoa(No1,str1, 10 ); itoa(No2,str2, 10 );

    ISoapSerializerPtr Serializer;

    ISoapReaderPtr Reader;

    ISoapConnectorPtr Connector;    

     //  Connect to the service.

    Connector.CreateInstance(__uuidof(HttpConnector30));   

    Connector -> Property[ " EndPointURL " ]  =   " http://localhost:3542/Service.asmx " ;   
    Connector -> Connect();

     //  Begin the message.

    Connector -> Property[ " SoapAction " ]  =   " http://Fantasy/WebServiceDemo/Sub " ;

    Connector -> BeginMessage();      

     //  Create the SoapSerializer object.

    Serializer.CreateInstance(__uuidof(SoapSerializer30));

     //  Connect the serializer object to the input stream of the connector object.

    Serializer -> Init(_variant_t((IUnknown * )Connector -> InputStream));

     //  Build the SOAP Message.

    Serializer -> StartEnvelope( "" , "" , "" );

     // 这里可以添加SoapHeader验证代码：

     /*

    Serializer->StartHeader("");

    Serializer->StartHeaderElement("MyHeader"," http://Fantasy/WebServiceDemo/ ",0,"","NONE","");   

    Serializer->StartElement("UserName","","","");//填充参数2则出错。

    Serializer->WriteString(_bstr_t(userName));

     */

    Serializer -> StartBody( "" );   

     // Serializer->StartElement("AddNumbers"," http://Fantasy/WebServiceDemo/ ","","");
    Serializer -> StartElement( " Sub " , " http://Fantasy/WebServiceDemo/ " , "" , "" );

     // (第三个参数可有可无，若加上第二个参数出错！？)

    Serializer -> StartElement( " NumberOne " , "" , "" , "" ); //  NumberOne=

    Serializer -> WriteString((_bstr_t)str1);

    Serializer -> EndElement();      

    Serializer -> StartElement( " NumberTwo " , "" , "" , "" ); //  NumberOne= 

    Serializer -> WriteString((_bstr_t)str2);

    Serializer -> EndElement();

    Serializer -> EndElement();  

     //

    Serializer -> EndBody();

    Serializer -> EndEnvelope();

     //  Send the message to the XML Web service.   

    Connector -> EndMessage();   

     //  Read the response. 

    Reader.CreateInstance(__uuidof(SoapReader30));    

     //  Connect the reader to the output stream of the connector object.  

    Reader -> Load(_variant_t((IUnknown * )Connector -> OutputStream),  "" );    

     //  Display the result.

    printf( " Answer = %s/n " , ( const   char * )Reader -> RpcResult -> text);  

}

int  main()

{   

    CoInitialize(NULL);   

    Add2( 12 , 24 );  

    CoUninitialize();

     return   0 ;

}