dbconnection.cpp

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// DBConnection.cpp: implementation of the CDBConnection class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "DBConnection.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CDBConnection::CDBConnection()
{
	//创建连接对象
	m_pConn.CreateInstance("ADODB.Connection");
	m_Actived = FALSE;
}

CDBConnection::~CDBConnection()
{
	//释放连接对象
	m_pConn.Release();
}

BOOL CDBConnection::Open(CString CnnStr)
{
	try
	{
		m_pConn->Open(_bstr_t(CnnStr), "", "", adConnectUnspecified);

		m_Actived = TRUE;

		return TRUE;
	}
	catch(_com_error &e)
	{
		return FALSE;
	}
}

void CDBConnection::Close()
{
	if (m_Actived)
	{
		m_pConn->Close();
		m_Actived = FALSE;
	}
}