本文給出了一個在C++中調用C# WEB Service的例子，如果有什么錯誤，請指出。

首先把c#的webservice給出來：

namespace SecurityWebService
{
    public struct SecurityInfo 
     { 
          public string Code; 
          public string CompanyName; 
          public double Price; 
     } 
      public class Service1 : System.Web.Services.WebService
     {
          private SecurityInfo Security;

          public Service1() 
          { 
               Security.Code = ""; 
               Security.CompanyName = ""; 
               Security.Price = 0; 
          }

          private void AssignValues(string Code) 
          { 
               Security.Code = Code; 
               Security.CompanyName = Code + " Pty Ltd"; 
               Random RandomNumber = new System.Random(); 
               Security.Price = double.Parse(new System.Random(RandomNumber.Next(1,10)).NextDouble().ToString("##.##")); 
          }

          [WebMethod(Description="dgdfgfdgdfgfdg",EnableSession=false)] 
          public SecurityInfo GetSecurityInfo(string Code) 
          { 
               AssignValues(Code); 
               SecurityInfo SecurityDetails = new SecurityInfo(); 
               SecurityDetails.Code = Security.Code; 
               SecurityDetails.CompanyName = Security.CompanyName; 
               SecurityDetails.Price = Security.Price; 
               return SecurityDetails; 
          }     
     }

然后新建個vs.net項目，在該項目里添加上面的webservice，名字空間就默然為localhost.

然后在cpp文件中添加#include "localhost.h"; using namespace localhost;

最后可以在.h文件文件加上點擊事件：

private: System::Void button1_Click(System::Object *  sender, System::EventArgs *  e)
        { 
              localhost::Service1 * jj = new localhost::Service1; 
              localhost::SecurityInfo *cc = jj->GetSecurityInfo("111");
              textBox1->Text = cc->Code;
              textBox2->Text = cc->CompanyName;
              textBox3->Text = Convert::ToString(cc->Price);
    }

運行后會出現 請求因 HTTP 狀態 401 失敗：Access Denied 的錯誤。

最后我在iis信息服務器上把匿名訪問和允許iis控制密碼給勾上以后就好用了，究竟為什么，希望路過者給出建議？