如何获取Access2000中所有表的名称,以下是实现功能的代码:
void OpenSchemaX(TCHAR *TableName) { HRESULT hr = S_OK; ::CoInitialize(NULL); //初始化Com IADORecordBinding *picRs = NULL; _RecordsetPtr pRstSchema("ADODB.Recordset"); _ConnectionPtr pConnection("ADODB.Connection" ); pConnection->ConnectionString = TableName; pConnection->Provider = "Microsoft.Jet.OLEDB.4.0"; try { pConnection->Open(pConnection->ConnectionString, "", "", adModeUnknown); pRstSchema->QueryInterface( __uuidof(IADORecordBinding), (LPVOID*)&picRs); pRstSchema = pConnection->OpenSchema(adSchemaTables); //枚举表的名称处理 while(!(pRstSchema->EndOfFile)) { CString strTableType; _bstr_t table_name = pRstSchema->Fields-> GetItem("TABLE_NAME")->Value;//获取表的名称 _bstr_t table_type = pRstSchema->Fields-> GetItem("TABLE_TYPE")->Value;//获取表的类型 strTableType.Format("%s",(LPCSTR) table_type); if(!lstrcmp(strTableType,_T("TABLE"))) { m_strList.AddString((LPCSTR) table_name); //添加表的名称 } pRstSchema->MoveNext(); } // Clean up objects before exit. pRstSchema->Close(); pConnection->Close(); } catch (_com_error &e) { // Notify the user of errors if any. // Pass a connection pointer accessed from the Connection. PrintProviderError(pConnection); PrintComError(e); } CoUninitialize(); } void PrintProviderError(_ConnectionPtr pConnection) { ErrorPtr pErr = NULL; if( (pConnection->Errors->Count) > 0) { long nCount = pConnection->Errors->Count; // Collection ranges from 0 to nCount -1. for(long i = 0;i < nCount;i++) { pErr = pConnection->Errors->GetItem(i); CString strError; strError.Format("Error number: %xt%s", pErr->Number, pErr->Description); AfxMessageBox(strError); } } } void PrintComError(_com_error &e) { _bstr_t bstrSource(e.Source()); _bstr_t bstrDescription(e.Description()); // Print COM errors. CString strError; strError.Format("Error number: Description = %stCode meaning = %s",(LPCSTR) bstrDescription, e.ErrorMessage()); AfxMessageBox(strError); } |
调用方法:
CString strFileName; TCHAR FileName[MAX_PATH]; TCHAR bigBuff[2048] = _T(""); // maximum common dialog buffer size TCHAR szFilter[] = _T("Text Files (*.mdb)|*.mdb|All Files (*.*)|*.* "); CFileDialog dlg(TRUE, NULL, NULL, OFN_HIDEREADONLY | OFN_ALLOWMULTISELECT, szFilter); // Modify OPENFILENAME members directly to point to bigBuff dlg.m_ofn.lpstrFile = bigBuff; dlg.m_ofn.nMaxFile = sizeof(bigBuff); if(IDOK == dlg.DoModal() ) { strFileName = dlg.GetPathName(); lstrcpy(FileName,strFileName); OpenSchemaX(FileName); } |