连接数据库打开有问题！

wasdfgh951 2014-05-19 04:59:35

在StdAfx.h中加上
#import "C:\Program Files\Common Files\System\ado\msado15.dll" no_namespace rename("EOF","rsEOF")

CoInitialize(NULL);

_ConnectionPtr pConn(__uuidof(Connection));

_RecordsetPtr pRst(__uuidof(Recordset));

_CommandPtr pCmd(__uuidof(Command));

pConn->ConnectionString="Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial
Catalog=student4;Data Source=HAO-PC\SQLEXPRESS"；//打开时出现错误。这个连接字符串是从ADO获得（出现下面的错误大家帮忙看看）

pConn->Open("","","",adConnectUnspecified);

pCmd->put_ActiveConnection_variant_t((IDispatch*)pConn));

pCmd->CommandText="select * from student4";

pRst=pCmd->Execute(NULL,NULL,adCmdText);

while(!pRst->rsEOF)
{
((CListBox*)GetDlgItem(IDC_LIST1))->AddString(
(_bstr_t)pRst->GetCollect("au_lname"));
pRst->MoveNext();
}

pRst->Close();
pConn->Close();
pCmd.Release();
pRst.Release();
pConn.Release();
CoUninitialize();

还没走到open时就出现：
Loaded 'ntdll.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\kernel32.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\KernelBase.dll', no matching symbolic information found.
Loaded symbols for 'C:\Windows\System32\MFC42D.DLL'
Loaded symbols for 'C:\Windows\System32\MSVCRTD.DLL'
Loaded 'C:\Windows\System32\gdi32.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\user32.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\lpk.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\usp10.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\msvcrt.dll', no matching symbolic information found.
Loaded symbols for 'C:\Windows\System32\MFCO42D.DLL'
Loaded 'C:\Windows\System32\ole32.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\rpcrt4.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\oleaut32.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\imm32.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\msctf.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\MFC42LOC.DLL', no matching symbolic information found.
Loaded 'C:\Windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_5.82.7601.18201_none_ec80f00e8593ece5\comctl32.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\advapi32.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\sechost.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\uxtheme.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\dwmapi.dll', no matching symbolic information found.
Loaded 'C:\Windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.17514_none_41e6975e2bd6f2b2\comctl32.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\shlwapi.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\cryptbase.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\clbcatq.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\MSADODC.OCX', no matching symbolic information found.
Loaded 'C:\Windows\System32\sxs.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\olepro32.dll', no matching symbolic information found.
Loaded 'C:\Users\hao\AppData\Roaming\TaobaoProtect\TaobaoProtectSE.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\psapi.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\shell32.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\version.dll', no matching symbolic information found.
Loaded 'C:\Windows\System32\profapi.dll', no matching symbolic information found.

不知道为什么！

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