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  HRESULT hr=pApp->m_pRecordset->Open(sql.AllocSysString(),pApp->m_pConnection.GetInterfacePtr(),adOpenDynamic,adLockOptimistic,adCmdText);
        if(!SUCCEEDED(hr))
{
  AfxMessageBox("´³ö´í");
  return false;
}

      if(pApp->m_pRecordset!=NULL)
{
  pApp->m_pRecordset->Close();

        }

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  ÓÉÓڼǼ¼¯ÊÇÔÚ³ÌÐòÆô¶¯Ê±::CoInitialize(NULL);
HRESULT hr;
try
{
hr = m_pConnection.CreateInstance("ADODB.Connection");//´´½¨Connection¶ÔÏó
if(SUCCEEDED(hr))
{
hr = m_pConnection->Open(
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=m_data.mdb",
"","",adModeUnknown);


}
}
catch(_com_error e)/
{
CString errormessage;

AfxMessageBox(errormessage
return FALSE;
}
m_pRecordset.CreateIns


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