collections-visual-c-syntax-index-with-sharpimport.md

title	Collections (Visual C++ Syntax Index with #import) | Microsoft Docs
ms.prod	sql
ms.prod_service	connectivity
ms.technology	connectivity
ms.custom
ms.date	01/19/2017
ms.reviewer
ms.topic	conceptual
apitype	COM
dev_langs	C++
helpviewer_keywords	syntax indexes [ADO], ADO for Visual C++ syntax with #import collections [ADO], ADO for Visual C++ syntax with #import ADO for Visual C++ syntax with #import [ADO] #import [ADO]
ms.assetid	36fbca8e-1884-44b5-806b-d15e30f42fe6
author	MightyPen
ms.author	genemi

Collections (Visual C++ Syntax Index with #import)

It is useful to know that collections inherit certain common methods and properties.

All collections inherit the Count property and Refresh method, and all collections add the Item property. The Errors collection adds the Clear method. The Parameters collection inherits the Append and Delete methods, while the Fields collection adds the Append, Delete, and Update methods.

Properties Collection

Methods

HRESULT Refresh( );  

Properties

long GetCount( ); __declspec(property(get=GetCount)) long Count;  
PropertyPtr GetItem( const _variant_t & Index ); __declspec(property(get=GetItem)) PropertyPtr Item[];  

Errors Collection

Methods

HRESULT Clear( );  
HRESULT Refresh( );  

Properties

long GetCount( ); __declspec(property(get=GetCount)) long Count;  
PropertyPtr GetItem( const _variant_t & Index ); __declspec(property(get=GetItem)) PropertyPtr Item[];  

Parameters Collection

Methods

HRESULT Append( IDispatch * Object );  
HRESULT Delete( const _variant_t & Index );  
HRESULT Refresh( );  

Properties

long GetCount( ); __declspec(property(get=GetCount)) long Count;  
PropertyPtr GetItem( const _variant_t & Index ); __declspec(property(get=GetItem)) PropertyPtr Item[];  

Fields Collection

Methods

HRESULT Append( _bstr_t Name, enum DataTypeEnum Type, long DefinedSize, enum FieldAttributeEnum Attrib, const _variant_t & FieldValue = vtMissing );  
HRESULT Delete( const _variant_t & Index );  
HRESULT Refresh( );  
HRESULT Update( );  

Properties

long GetCount( ); __declspec(property(get=GetCount)) long Count;  
PropertyPtr GetItem( const _variant_t & Index ); __declspec(property(get=GetItem)) PropertyPtr Item[];  

See Also

Errors Collection (ADO)
Fields Collection (ADO)
Parameters Collection (ADO)
Properties Collection (ADO)