刚开始学使用datagrid，写了下面的代码：
    HRESULT hRet;
    try    {
        hRet = m_connect.CreateInstance("ADODB.Connection");
        if (SUCCEEDED(hRet))
        {
            hRet = m_connect->Open("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=note.mdb", "", "", adModeUnknown);
        }
    }
    catch (_com_error e)    {
        CString errormessage;
        errormessage.Format("连接数据库失败!\r\n 错误信息:%s", (char*)e.Description());
        AfxMessageBox(errormessage);
        PostQuitMessage(1);
    }    

    m_record.CreateInstance("ADODB.Recordset");
    m_record->Open("SELECT * FROM test", _variant_t((IDispatch*)m_connect, true),adOpenStatic, adLockOptimistic, adCmdText);

    m_dbGrid.SetCaption(_T("单击列头进行排序"));
    m_dbGrid.SetRefDataSource((LPUNKNOWN)m_record);
//    m_dbGrid.Refresh();

结果什么都没显示出来。。。为什么读不出数据呀？？高手帮帮忙啊....