Partilhar via


Enumeração DTSUsageType

Indicates how an IDTSInputColumn100 object is used by a component.

Namespace:  Microsoft.SqlServer.Dts.Pipeline.Wrapper
Assembly:  Microsoft.SqlServer.DTSPipelineWrap (em Microsoft.SqlServer.DTSPipelineWrap.dll)

Sintaxe

'Declaração
Public Enumeration DTSUsageType
'Uso
Dim instance As DTSUsageType
public enum DTSUsageType
public enum class DTSUsageType
type DTSUsageType
public enum DTSUsageType

Membros

Nome do membro Descrição
UT_READONLY The component will read the values of an input column, but will not modify them.
UT_READWRITE The component will read and write to the column data.
UT_IGNORED The column is ignored by the component.

Comentários

This enumeration contains values that indicate how a component will use an IDTSInputColumn100 object.

Components validate that each column in their IDTSInputColumnCollection100 has its UsageType property set correctly.

For example, if a component needs read/write permission to an input column and the column's UsageType property is set to UT_READONLY, it should post a DTS_E_CANTSETUSAGETYPE message and return a failure result from Validate.