PipelineComponent.MapInputColumn Method (Int32, Int32, Int32)

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Applies To: SQL Server 2016 Preview

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

Namespace:   Microsoft.SqlServer.Dts.Pipeline
Assembly:  Microsoft.SqlServer.PipelineHost (in Microsoft.SqlServer.PipelineHost.dll)

Syntax

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

public:
[CLSCompliantAttribute(false)]
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

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

Parameters

Return Value

Type: Microsoft.SqlServer.Dts.Pipeline.Wrapper.IDTSExternalMetadataColumn100

The IDTSExternalMetadataColumn100 object that the input column is mapped to.

Remarks

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 Implementing External Metadata.

See Also

PipelineComponent Class
Microsoft.SqlServer.Dts.Pipeline Namespace

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