我用ado写了个基于对话框的程序，出现error runtime. 谢谢！！！

StdAfx.h 加入：#import "c:\Program Files\Common Files\System\ado\msado15.dll" no_namespace rename("EOF","ADOEOF")我的程序代码：BOOL CAdo_test3Dlg::OnInitDialog()
{
CDialog::OnInitDialog(); 。。省略 // TODO: Add extra initialization here
if (FAILED(::CoInitialize(NULL)))   // initialize COM
             return FALSE;
_RecordsetPtr pRs = NULL;  //declare recordset point
pRs.CreateInstance(_uuidof(Recordset));
      //connect
// _bstr_t strCnn("Provider=SQLOLEBD.1; User ID=sa; Initial   Catalog=Traffic; Data Source=CWJ");
CString sConn = "Provider=SQLOLEBD.1; User ID=sa; Initial Catalog=Traffic; Data Source=CWJ";
_bstr_t strCnn(sConn);
     // open the recordset
pRs->Open("select * from operator",strCnn,adOpenDynamic,adLockReadOnly,adCmdText); 
COleVariant value;  //declare the value 
while (!pRs->ADOEOF)
{
value = pRs->GetFields()->GetItem("name")->GetValue();
m_ctrComb.AddString(CString(value.bstrVal));
pRs->MoveNext();
}
pRs->Close();
::CoUninitialize();  //release the COM
return TRUE;  // return TRUE  unless you set the focus to a control
}编译无错，运行弹出对话框：Microsoft vc++ runtime libary
error runtime
program:D\works\ado_test3\debug\ado_test3.ext
This application has requested the  Runtime to terminate it in a unusual way.Please contact the application's support team for more information.