C++讀取Sql Server

// ReadSqlConsole.cpp: 主項目文件。

#include "stdafx.h"
#include <iostream>
#include<iostream>
#include<iomanip>//for setw()
#include"windows.h"

#import "C:\Program Files\Common Files\System\ado\msado15.dll" no_namespace rename("EOF","EndOfFile")

using namespace System;
using namespace std;

int main(array<System::String ^> ^args)
{
    ::CoInitialize(NULL);

    //類型在msado15.dll中已定義
    _RecordsetPtr m_pRecordset("ADODB.Recordset");
    _ConnectionPtr m_pConnection("ADODB.Connection");

    _bstr_t bstrSQL("select * from er_order where pactnumber like '13010000%' order by pactnumber"); //對應的sql語句

    try
    {
        clog << "正在連接資料庫..." << endl;
        m_pConnection.CreateInstance("ADODB.Connection");//創建Connection對象
        //設置連接字元串，必須是BSTR型或者_bstr_t類型
        _bstr_t strConnect = "Provider=SQLOLEDB; Server=【資料庫實例】;Database=【資料庫名】; uid=【資料庫用戶】; pwd=【密碼】;";
        m_pConnection->Open(strConnect, "", "", adModeUnknown);//伺服器連接

        if (m_pConnection == NULL)
        {
            std::cerr << "Lind data ERROR!\n";
        }

        m_pRecordset.CreateInstance(__uuidof(Recordset));//創建記錄集對象

        //取得表中的記錄
        m_pRecordset->Open(bstrSQL, m_pConnection.GetInterfacePtr(), adOpenDynamic, adLockOptimistic, adCmdText);

        _variant_t PactNumber, OrigCount;//對應庫中的欄位

        cout << "--------------合同清單--------------" << endl;
        while (!m_pRecordset->EndOfFile)
        {
            PactNumber = m_pRecordset->GetCollect("Pactnumber");
            OrigCount = m_pRecordset->GetCollect("Origcount");
            cout << "合同號:" << setw(10) << (char*)(_bstr_t)PactNumber;
            cout << "   簽單額:" << setw(7) << (char*)(_bstr_t)OrigCount << endl;

            m_pRecordset->MoveNext();//下一條記錄
        }
        m_pRecordset->Close();//關閉記錄集
    }

    catch (_com_error e)//捕捉異常
    {
        cerr << "\nERROR:" << (char*)e.Description();
    }

    if (m_pConnection->State)
    {
        m_pConnection->Close();
    }

    ::CoUninitialize();

    Console::ReadLine();
    
    return 0;
}