步驟1：

在StdAfx.h的#include語句之后添加

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

步驟2：

添加文件ADOConn.h

// 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_ #include <icrsint.h> #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 > 1000class 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_)

步驟3：

添加文件ADOConn.cpp

// 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() {::CoInitialize(NULL);// 此句很重要，不要遺漏try{m_pConnection.CreateInstance("ADODB.Connection");CString path = AfxGetApp()->m_lpCmdLine;if (path.IsEmpty()){m_pConnection->Open(_bstr_t(_T("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=fctest.mdb;Persist Security Info=False")),"","",adOpenUnspecified);}else{int pos = path.ReverseFind('\\');path = path.Left(pos); //注：fctest.mdb是我的本地數據庫名 CString mdbPath = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+ path +"\\fctest.mdb;Persist Security Info=False";m_pConnection->Open((_bstr_t)mdbPath,"","",adOpenUnspecified);}}catch(_com_error e){ AfxMessageBox(e.Description());return;} }//執行SQL語句 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(); AfxMessageBox(e.Description());return FALSE;} }//取消和數據庫的鏈接 void ADOConn::ExitConnect() {if(m_pRecordset != NULL)m_pRecordset->Close();m_pConnection->Close();::CoUninitialize();// 此句很重要，不要遺漏 }//讀取數據集 _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; }

使用方法：

dialog中有IDC_LIST1的list。

查詢：

ADOConn ado;ado.OnInitADOConn();CListCtrl* pListCtrl = (CListCtrl*)GetDlgItem(IDC_LIST1);pListCtrl->DeleteAllItems();int n = 0;CString sql;sql.Format("select * from test where id > 0");ado.m_pRecordset = ado.GetRecordSet((_bstr_t)sql);//讀取數據集while(!ado.m_pRecordset->adoEOF){CString i1,i2,i3,i4;i1 = (char*)(_bstr_t)ado.m_pRecordset->GetCollect("id");i2 = (char*)(_bstr_t)ado.m_pRecordset->GetCollect("name");i3 = (char*)(_bstr_t)ado.m_pRecordset->GetCollect("age");i4 = (char*)(_bstr_t)ado.m_pRecordset->GetCollect("zhiye");pListCtrl->InsertItem(n,i1);pListCtrl->SetItemText(n,1,i2);pListCtrl->SetItemText(n,2,i3);pListCtrl->SetItemText(n,3,i4);n++;ado.m_pRecordset->MoveNext();}ado.ExitConnect();

增加：

ADOConn ado;ado.OnInitADOConn();CString sql;sql.Format("insert into test(id,name,age,zhiye) values (%d,'%s',%d,'%s')",5,"老潘",23,"打手");ado.ExecuteSQL((_bstr_t)sql);ado.ExitConnect();

刪除：

ADOConn ado;ado.OnInitADOConn();CString sql;sql.Format("delete from test where id = 5");ado.ExecuteSQL((_bstr_t)sql);ado.ExitConnect();

修改：

ADOConn ado;ado.OnInitADOConn();CString sql;sql.Format("update test set name = '%s' where name = '%s' ","潘把子","老潘");ado.ExecuteSQL((_bstr_t)sql);ado.ExitConnect();

常見問題：

1.win7下編譯，xp下不能使用，會報錯

解決辦法：注意到代碼里有

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

實際上win7和win xp的msado15.dll是不一樣的，向下兼容，并且看到有人說win xp下的msado15.dll也不盡相同。如果想在win7下編譯，并且能在xp下運行，可以拷貝

win XP中C:\Program Files\Common Files\System\路徑下的ado文件夾到win7相同路徑下（注意保存原來的win7 ado文件夾），這樣在win7下編譯的程序在win xp下也可以運行。win7 及 win XP下的ado文件夾見附件。

2.初始化失敗，調試時發現_ConnectionPtr 指針為空

原因：當時沒有加::CoInitialize(NULL);及::CoUninitialize();語句。

示例源碼下載：

鏈接: https://pan.baidu.com/s/1cde7h0 密碼: 1xu8

xp ADO下載：

鏈接: https://pan.baidu.com/s/1sljv6ax 密碼: pcn9

win7 ADO下載：

鏈接: https://pan.baidu.com/s/1cbI4t4 密碼: ne39

轉載于:https://www.cnblogs.com/vipwtl/p/7771044.html

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