Статья
04/01/2012

Метод MapInputColumn

Establishes a relationship between an input column and a corresponding external metadata column.

Этот API-интерфейс несовместим с CLS.

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

Синтаксис

'Декларация
<CLSCompliantAttribute(False)> _
Public Overridable Function MapInputColumn ( _
    iInputID As Integer, _
    iInputColumnID As Integer, _
    iExternalMetadataColumnID As Integer _
) As IDTSExternalMetadataColumn100
'Применение
Dim instance As PipelineComponent
Dim iInputID As Integer
Dim iInputColumnID As Integer
Dim iExternalMetadataColumnID As Integer
Dim returnValue As IDTSExternalMetadataColumn100

returnValue = instance.MapInputColumn(iInputID, _
    iInputColumnID, iExternalMetadataColumnID)

[CLSCompliantAttribute(false)]
public virtual IDTSExternalMetadataColumn100 MapInputColumn(
    int iInputID,
    int iInputColumnID,
    int iExternalMetadataColumnID
)

[CLSCompliantAttribute(false)]
public:
virtual IDTSExternalMetadataColumn100^ MapInputColumn(
    int iInputID, 
    int iInputColumnID, 
    int iExternalMetadataColumnID
)

[<CLSCompliantAttribute(false)>]
abstract MapInputColumn : 
        iInputID:int * 
        iInputColumnID:int * 
        iExternalMetadataColumnID:int -> IDTSExternalMetadataColumn100 
[<CLSCompliantAttribute(false)>]
override MapInputColumn : 
        iInputID:int * 
        iInputColumnID:int * 
        iExternalMetadataColumnID:int -> IDTSExternalMetadataColumn100

public function MapInputColumn(
    iInputID : int, 
    iInputColumnID : int, 
    iExternalMetadataColumnID : int
) : IDTSExternalMetadataColumn100

Параметры

iInputID
Тип: System. . :: . .Int32
The ID of the IDTSInput100 object.

iInputColumnID
Тип: System. . :: . .Int32
The ID of the IDTSInputColumn100 object.

iExternalMetadataColumnID
Тип: System. . :: . .Int32
The ID of the IDTSExternalMetadataColumn100 object.

Возвращаемое значение

Тип: Microsoft.SqlServer.Dts.Pipeline.Wrapper. . :: . .IDTSExternalMetadataColumn100
The IDTSExternalMetadataColumn100 object that the input column is mapped to.

Замечания

This method is called to map an input column to a column in the ExternalMetadataColumnCollection of the input. When you are developing a custom data flow component, you override this method, to ensure that the input column and the output column match, and that you want to allow the mapping to occur.

For more information about working with external metadata columns, see Реализация внешних метаданных.

См. также

Справочник

PipelineComponent Класс

Пространство имен Microsoft.SqlServer.Dts.Pipeline

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