taotesea

Open Excel file,Error _ConnectionPtr m_adoConn; _RecordsetPtr m_adoRec; ::CoInitialize(NULL); m_adoConn.CreateInstance(__uuidof(Connection)); m_adoConn->Open("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\\1.xls;Extended Properties=Excel 8.0;IMEX=1;","","",adModeUnknown); stop this function: inline HRESULT Connection15::Open ( _bstr_t ConnectionString, _bstr_t UserID, _bstr_t Password, long Options ) { HRESULT _hr = raw_Open(ConnectionString, UserID, Password, Options); if (FAILED(_hr)) _com_issue_errorex(_hr, this, __uuidof(this)); return _hr; } why error thank:)

Open CSV File ,error Code _ConnectionPtr m_adoConn; _RecordsetPtr m_adoRec; ::CoInitialize(NULL); m_adoConn.CreateInstance(__uuidof(Connection)); m_adoConn->Open("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\\1.csv;Extended Properties=csv;HDR=Yes;FMT=Delimited","","",adModeUnknown); m_adoRec.CreateInstance (__uuidof(Recordset)); m_adoConn->CursorLocation = adUseClient; m_adoRec->Open("select * from c:\\1.csv",m_adoConn.GetInterfacePtr(),adOpenDynamic,adLockOptimistic,adCmdText); error message: Unknown error 0x800A0E7D thank :)