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CAccessDB m_DBOperation;

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m_DBOperation.Init(sFilename, sPassword);
m_DBOperation.UnInit();


void CAccessDB::Init(CString sFileName, CString sPassword)
{
    ......
    ......
    CString strConnect("");
    CString strRead("");
    strConnect.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=%s;Jet OLEDB:Database Password=%s", sFileName, sPassward);
    strRead.Format("Delete from DAY_NOTE where ID=1 or ID=2");
    bstr_t bstrConnet = strConnect.AllocSysString();
    bstr_t bstrRead = strRead.AllocSysString();
    try
{
        m_csOperation.Lock();
        m_pConnection.CreateInstance(__uuidof(Connection));
        m_pConnection->Open(bstrConnet, "", "", -1);
        m_pRecordSet.CreateInstance(__uuidof(Recordset));
        m_pRecordSet->Open(bstrRead, m_pConnection.GetInterfacePtr(), adOpenDynamic, adLockOptimistic, adCmdText);
        m_csOperation.Unlock();
}
catch(_com_error e)
{
        m_csOperation.


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CoInitialize(NULL);
  _ConnectionPtr pConn(__uuidof(Connection)); 
_RecordsetPtr pRst(__uuidof(Recordset));
pConn->ConnectionString="Provider ......
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