ADO公共类

最新推荐文章于 2023-07-16 21:27:08 发布

wklnewlife

最新推荐文章于 2023-07-16 21:27:08 发布

阅读量720

点赞数

CC 4.0 BY-SA版权

分类专栏： C/C++ 文章标签： null security interface file system class

本文链接：https://blog.youkuaiyun.com/qncj666/article/details/7611324

C/C++ 专栏收录该内容

47 篇文章

订阅专栏

// ADOConn.h: interface for the ADOConn class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_ADOCONN_H__5FB9A9B2_8D94_44F7_A2DA_1F37A4F33D10__INCLUDED_)
#define AFX_ADOCONN_H__5FB9A9B2_8D94_44F7_A2DA_1F37A4F33D10__INCLUDED_

#import "C:\Program Files\Common Files\System\ado\msado15.dll" no_namespace rename("EOF","adoEOF")rename("BOF","adoBOF")
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

class ADOConn  
{
public:
    _ConnectionPtr m_pConnection;
	_RecordsetPtr m_pRecordset;
public:
	_RecordsetPtr& GetRecordSet(_bstr_t bstrSQL);
	ADOConn();
	virtual ~ADOConn();

	void OnInitADOConn();
    BOOL ExecuteSQL(_bstr_t bstrSQL);
	void ExitConnect();
};

#endif // !defined(AFX_ADOCONN_H__5FB9A9B2_8D94_44F7_A2DA_1F37A4F33D10__INCLUDED_)

// ADOConn.cpp: implementation of the ADOConn class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "SuperMarket.h"
#include "ADOConn.h"

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

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

ADOConn::ADOConn()
{

}

ADOConn::~ADOConn()
{

}

void ADOConn::OnInitADOConn()
{
	try
	{
       m_pConnection.CreateInstance("ADODB.Connection");
	   _bstr_t strConnect="Provider=MSDAORA.1;Password=sxm;User ID=mr;Data Source=mrsoft_sxm;Persist Security Info=True";
	   m_pConnection->Open(strConnect,"","",adModeUnknown);
	}
	catch(_com_error e)
	{
		AfxMessageBox(e.Description());
	}
}

BOOL ADOConn::ExecuteSQL(_bstr_t bstrSQL)
{
	try
	{
        if(m_pConnection==NULL)
	     	OnInitADOConn();
        m_pConnection->Execute(bstrSQL,NULL,adCmdText);
		return true;
	}
	catch(_com_error e)
	{
		e.Description();
		return false;
	}
}

void ADOConn::ExitConnect()
{
    if(m_pRecordset != NULL)
		m_pRecordset->Close();
	m_pConnection->Close();
}

_RecordsetPtr& ADOConn::GetRecordSet(_bstr_t bstrSQL)
{
	try
	{
		if(m_pConnection==NULL)
              OnInitADOConn();
		m_pRecordset.CreateInstance(__uuidof(Recordset));
        m_pRecordset->Open(bstrSQL,m_pConnection.GetInterfacePtr(),adOpenDynamic,adLockOptimistic,adCmdText);
	}
    catch(_com_error e)
	{
		e.Description();
	}
	return m_pRecordset;
}

void CUserdlg::AddToList()
{
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	CString sql;
	sql.Format("select NAME from TB_USER ");
	m_AdoConn.m_pRecordset = m_AdoConn.GetRecordSet((_bstr_t)sql);
	int i = 0;
	while(!m_AdoConn.m_pRecordset->adoEOF)
	{
		m_List.InsertItem(i,(char*)(_bstr_t)m_AdoConn.m_pRecordset->GetCollect("NAME"),0);
		m_AdoConn.m_pRecordset->MoveNext();
		i++;
	}
	m_AdoConn.ExitConnect();
}