PipelineComponent.MapInputColumn 方法

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

此 API 不符合 CLS 標準。 

命名空間：  Microsoft.SqlServer.Dts.Pipeline
組件：  Microsoft.SqlServer.PipelineHost (在 Microsoft.SqlServer.PipelineHost.dll 中)

語法

'宣告
<CLSCompliantAttribute(False)> _
Public Overridable Function MapInputColumn ( _
    iInputID As Integer, _
    iInputColumnID As Integer, _
    iExternalMetadataColumnID As Integer _
) As IDTSExternalMetadataColumn100
'用途
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

參數

• iInputID
  型別：System.Int32
  The ID of the IDTSInput100 object.

• iInputColumnID
  型別：System.Int32
  The ID of the IDTSInputColumn100 object.

• iExternalMetadataColumnID
  型別：System.Int32
  The ID of the IDTSExternalMetadataColumn100 object.

傳回值

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

備註

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 實作外部中繼資料.

請參閱

參考

PipelineComponent 類別

Microsoft.SqlServer.Dts.Pipeline 命名空間