void CADOExample1Dlg::OnBtnQuery()
{
  // TODO: Add your control notification handler code here
  CoInitialize(NULL);
  _ConnectionPtr pConn(__uuidof(Connection));
  _RecordsetPtr pRst(__uuidof(Recordset));
  pConn->ConnectionString = "Provider=SQLOLEDB.1;Password=123456;Persist Security Info=True;User ID=sa;Initial Catalog=db_test;Data Source=.";
  pConn->Open("","","",adConnectUnspecified);
  pRst = pConn->Execute("select * from tb_image",NULL,adCmdText);
  while(!pRst->rsEOF)
  {
    ((CListBox*)GetDlgItem(IDC_LIST1))->AddString(
      (_bstr_t)pRst->GetCollect("imageID"));
    pRst->MoveNext();
  }
  pRst->Close();
  pConn->Close();
  pRst.Release();
  pConn.Release();
  CoUninitialize();
}