查找AD用戶

建立了一個測試的域,域內有用戶6000,但是使用下面的代碼段(從CSDN上面找到後修改出來的)列出所有的用戶時出錯了,只能顯示出前面1000個用戶. long GetUserInfoList(LPOLESTR pszServer,LPUSERINFO &lpUserInfo,DWORD &dwUserCount) { IADs *pADs = NULL; IDirectorySearch *pSearchBase = NULL; OLECHAR szPath[MAX_PATH+1]; VARIANT var; //for my purpose to pass the result out of the program DWORD dwSizeofArray =200; DWORD dwSizeIncrease =200; LPOLESTR szAccountName =NULL; LPOLESTR szName =NULL; lpUserInfo = new UserInfo[dwSizeofArray]; wcscpy(szPath,L"LDAP://"); if(pszServer!=NULL && wcslen(pszServer)) wcscpy(&(szPath[wcslen(szPath)]),pszServer); else wcscpy(&(szPath[wcslen(szPath)]),L"rootDSE"); CoInitialize(NULL); HRESULT hr = ADsOpenObject(szPath,// L"LDAP://rootDSE", NULL,NULL, ADS_SECURE_AUTHENTICATION, // Use Secure Authentication. IID_IADs,(void**)&pADs); if(!SUCCEEDED(hr) || pADs == NULL) { return E_FAIL; } VariantInit(&var); hr = pADs->Get(L"defaultNamingContext",&var); if (!SUCCEEDED(hr)) { pADs->Release(); return E_FAIL; } wcscpy(szPath,L"LDAP://"); wcscat(szPath,var.bstrVal); VariantClear(&var); if (pADs) { pADs->Release(); pADs = NULL; } // Bind to the root of the current domain. hr = ADsOpenObject( szPath,NULL,NULL, ADS_SECURE_AUTHENTICATION, // Use Secure Authentication. IID_IDirectorySearch, (void**)&pSearchBase); if (!SUCCEEDED(hr)) { return E_FAIL; } HRESULT hrObj = E_FAIL; hr = E_FAIL; if ((!pSearchBase)) { return E_FAIL; } //Create search filter OLECHAR pszSearchFilter[MAX_PATH+1]; OLECHAR szADsPath[MAX_PATH+1]; wcscpy(pszSearchFilter, L"(&(objectCategory=person)(objectClass=user))"); //Search entire subtree from root. ADS_SEARCHPREF_INFO SearchPrefs; SearchPrefs.dwSearchPref = ADS_SEARCHPREF_SEARCH_SCOPE; SearchPrefs.vValue.dwType = ADSTYPE_INTEGER; SearchPrefs.vValue.Integer = ADS_SCOPE_SUBTREE; DWORD dwNumPrefs = 1; // COL for iterations ADS_SEARCH_COLUMN col; // Handle used for searching ADS_SEARCH_HANDLE hSearch; // Set the search preference hr = pSearchBase->SetSearchPreference( &SearchPrefs, dwNumPrefs); if (FAILED(hr)) { pSearchBase->Release(); return hr; } // Set attributes to return CONST DWORD dwAttrNameSize = 1; LPOLESTR pszAttribute[dwAttrNameSize] = {L"ADsPath"}; // Execute the search hr = pSearchBase->ExecuteSearch(pszSearchFilter, pszAttribute, dwAttrNameSize, &hSearch); // INT iGroupCount = cNewGroupList.GetCount(); if (!SUCCEEDED(hr)) { pSearchBase->Release(); return S_OK; } VARIANT varName; BSTR bstrName = NULL; OLECHAR *szComputerDisplayName; OLECHAR *szComputerSAMName ; OLECHAR *szComputerPrincipalName; //this parameter not used yet DWORD dwCount =0; while( pSearchBase->GetNextRow( hSearch) != S_ADS_NOMORE_ROWS ) { szComputerDisplayName =new OLECHAR[MAX_PATH+1]; szComputerSAMName =new OLECHAR[MAX_PATH+1]; szComputerPrincipalName =new OLECHAR[MAX_PATH+1]; for (DWORD x = 0; x < dwAttrNameSize; x++) { // Get the data for this column hr = pSearchBase->GetColumn( hSearch, pszAttribute[x], &col ); if ( !SUCCEEDED(hr) ) {//在第1000個時程序在這裏出錯了. pSearchBase->CloseSearchHandle(hSearch); pSearchBase->Release(); return E_FAIL; } 

看了MSDN是要設置頁面的大小，上面說的很明白，總算理解了這個參數的意義了。      
  ADS_SEARCHPREF_INFO   SearchPrefs[2];  
   
  SearchPrefs[0].dwSearchPref   =   ADS_SEARCHPREF_PAGESIZE;  
  SearchPrefs[0].vValue.dwType   =   ADSTYPE_INTEGER;  
  SearchPrefs[0].vValue.Integer   =   100;  
   
  SearchPrefs[1].dwSearchPref   =   ADS_SEARCHPREF_SEARCH_SCOPE;  
  SearchPrefs[1].vValue.dwType   =   ADSTYPE_INTEGER;  
  SearchPrefs[1].vValue.Integer   =   ADS_SCOPE_SUBTREE;