Error C2871: "ADODB": namespace with this name does not exist (Error C2871: "ADODB": namespace with this name does not exist)

1.WINDOWS. H already included. MFC apps must not #include <windows.h>

I just added the #import "C:\Program Files\Common Files\system\ado\msado15.dll" no_namespace rename ("EOF", " Adoeof ")

In the <StdAfx.h> file. When the import sentence is add in the head of file,the error occured. If I moved it to the tail of the file,everything is OK. I don ' t know why.

Stdafx.h:include file for standard system include files,

or project specific include files that is used frequently, but

is changed infrequently

//

#import "C:\Program Files\Common Files\system\ado\msado15.dll" no_namespace rename ("EOF", "adoeof") //// Error

#if!defined (Afx_stdafx_h__c914c8d4_56eb_44cd_ae77_600c6d941ba2__included_)

#define Afx_stdafx_h__c914c8d4_56eb_44cd_ae77_600c6d941ba2__included_

#if _msc_ver > 1000

#pragma once

#endif//_msc_ver > 1000

#define VC_EXTRALEAN//Exclude rarely-used stuff from Windows headers

#include <afxwin.h> //MFC core and standard components

#include <afxext.h> //MFC extensions

#include <afxdisp.h> //MFC Automation classes

#include <afxdtctl.h>//MFC support for Internet Explorer 4 Common Controls

#ifndef _afx_no_afxcmn_support

#include <afxcmn.h>//MFC support for Windows Common Controls

#endif//_afx_no_afxcmn_support

#import "C:\Program Files\Common Files\system\ado\msado15.dll" no_namespace rename ("EOF", "adoeof") ////is OK

{{Afx_insert_location}}

Microsoft Visual C + + would insert additional declarations immediately before the previous line.

#endif//!defined (AFX_STDAFX_H__C914C8D4_56EB_44CD_AE77_600C6D941BA2__INCLUDED_)

2error C2011: ' DataTypeEnum ': ' enum ' type redefinition workaround2009-06-26 17:36

1>------Started Build: Project: Iotser, configuration: Debug Win32------ 1> is compiling ... 1>iotser.cpp 1>f:\c++ PRO\IOCPTSER\DEBUG\MSADO15.TLH (228): Error C2011: "LockTypeEnum": "Enum" type redefined 1>C:\Program Files\Microsoft Sdks\windows\v6.0a\include\dbdaoint.h (109): See Declaration of "LockTypeEnum" 1>f:\c++ PRO\IOCPTSER\DEBUG\MSADO15.TLH (276): Error C2011: "DataTypeEnum": "Enum" type redefined 1> C:\Program Files\Microsoft Sdks\windows\v6.0a\include\dbdaoint.h (138): See Declaration of "DataTypeEnum" 1>f:\c++ PRO\IOCPTSER\DEBUG\MSADO15.TLH (321): Error C2011: "FieldAttributeEnum": "Enum" type redefined 1>C:\Program Files\Microsoft Sdks\windows\v6.0a\include\dbdaoint.h (127): See Declaration of "FieldAttributeEnum" 1>f:\c++ PRO\IOCPTSER\DEBUG\MSADO15.TLH (343): Error C2011: "EditModeEnum": "Enum" type redefined 1> C:\Program Files\Microsoft Sdks\windows\v6.0a\include\dbdaoint.h (83): See Declaration of "EditModeEnum" 1>f:\c++ PRO\IOCPTSER\DEBUG\MSADO15.TLH (352): Error C2011: "RecordStatusEnum": "Enum" type redefined 1>C:\Program Files\Microsoft Sdks\windows\v6.0a\include\dbdaoint.h (341): See Declaration of "RecordStatusEnum" 1>f:\c++ PRO\IOCPTSER\DEBUG\MSADO15.TLH (616): Error C2011: "ParameterDirectionEnum": "Enum" type redefined 1> C:\Program Files\Microsoft Sdks\windows\v6.0a\include\dbdaoint.h (326): See Declaration of "ParameterDirectionEnum" 1>f:\c++ pro\iocptser\iocptser.cpp: Error C2871: "ADODB": namespace with this name does not exist 1> build log saved in "File://f:\c++ pro\iocptser\debug\buildlog.htm" 1>iocptser-7 a bug, 0 warnings ========== Generation: Success 0, failure 1, latest 0, skip 0 ========== Later, the search on csdn found that there are two ways to solve this problem. 1) #pragma warning (disable:4146) #import "C:\Program Files\Common Files\system\ado\msado15.dll" named_guids rename ("EOF", "adoeof"), rename ("BOF", " Adobof ") #pragma warning (default:4146) using namespace ADODB; 2) #pragma warning (disable:4146) #import "C:\Program Files\Common Files\system\ado\msado15.dll" \ No_namespace \ Rename ("EOF", "adoeof") Rename ("DataTypeEnum", "adodatatypeenum") \ Rename ("FieldAttributeEnum", "Adofielattributeenum") Rename ("EditModeEnum", "adoeditmodeenum") \ Rename ("LockTypeEnum", "Adolocktypeenum") Rename ("RecordStatusEnum", "adorecordstatusenum") \ Rename ("ParameterDirectionEnum", "Adoparameterdirectionenum")

Error C2871: "ADODB": namespace with this name does not exist (Error C2871: "ADODB": namespace with this name does not exist)