Интерфейс IDTSExternalMetadataColumnCollection100

Contains a collection of IDTSExternalMetadataColumn100 objects that represent the columns of an external data source.

Пространство имен:  Microsoft.SqlServer.Dts.Pipeline.Wrapper
Сборка:  Microsoft.SqlServer.DTSPipelineWrap (в Microsoft.SqlServer.DTSPipelineWrap.dll)

Синтаксис

'Декларация
<GuidAttribute("E472B6AE-202C-4C67-8F44-7D7EE3807A44")> _
Public Interface IDTSExternalMetadataColumnCollection100 _
    Inherits IEnumerable
'Применение
Dim instance As IDTSExternalMetadataColumnCollection100
[GuidAttribute("E472B6AE-202C-4C67-8F44-7D7EE3807A44")]
public interface IDTSExternalMetadataColumnCollection100 : IEnumerable
[GuidAttribute(L"E472B6AE-202C-4C67-8F44-7D7EE3807A44")]
public interface class IDTSExternalMetadataColumnCollection100 : IEnumerable
[<GuidAttribute("E472B6AE-202C-4C67-8F44-7D7EE3807A44")>]
type IDTSExternalMetadataColumnCollection100 =  
    interface
        interface IEnumerable
    end
public interface IDTSExternalMetadataColumnCollection100 extends IEnumerable

Тип IDTSExternalMetadataColumnCollection100 обеспечивает доступ к следующим элементам.

Свойства

  Имя Описание
Открытое свойство Count Gets the number of elements contained in an IDTSExternalMetadataColumnCollection100.
Открытое свойство IsUsed Gets or sets a value that indicates whether the collection is populated by the component.
Открытое свойство Item Gets the IDTSExternalMetadataColumn100 object specified by the Index parameter.

В начало

Методы

  Имя Описание
Открытый метод FindObjectByID Locates an object in the collection by its ID.
Открытый метод FindObjectIndexByID Locates the index of an object in the collection by its ID.
Открытый метод GetEnumerator() () () () (Производный от IEnumerable.)
Открытый метод GetEnumerator() () () () Returns an enumerator that can iterate through an IDTSExternalMetadataColumnCollection100.
Открытый метод GetObjectByID Gets an IDTSExternalMetadataColumn100 object that has the specified ID.
Открытый метод GetObjectIndexByID Gets the index of an IDTSExternalMetadataColumn100 object that has the specified ID.
Открытый метод New Creates a new IDTSExternalMetadataColumn100 object and adds it to the end of a collection.
Открытый метод NewAt Creates a new IDTSExternalMetadataColumn100 at the specified location in a collection.
Открытый метод RemoveAll Deletes each IDTSExternalMetadataColumn100 object in a collection.
Открытый метод RemoveObjectByID Removes an IDTSExternalMetadataColumn100 object that has the specified ID.
Открытый метод RemoveObjectByIndex Removes an IDTSExternalMetadataColumn100 object at the specified index.
Открытый метод SetIndex Changes the location in the collection of an IDTSExternalMetadataColumn100 object.

В начало

Замечания

A data flow component populates and uses this collection to validate the columns in its IDTSInputColumnCollection100 or IDTSOutputColumnCollection100 when the ValidateExternalMetadata property is false or when the SSIS Designer is in offline mode.

The collection typically represents the columns of an external data source used by a source or destination component. Use of the collection allows the component to perform validation without an expensive, time-consuming round trip to the source itself.

For more information about implementing external metadata columns in components see Реализация внешних метаданных.