Compartilhar via

  • Artigo

Método SetNull

Makes the value of the specified column nullNothingnullptrunituma referência nula (Nothing no Visual Basic).

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

Sintaxe

'Declaração
Protected Sub SetNull ( _
    ColumnIndex As Integer _
)
'Uso
Dim ColumnIndex As Integer

Me.SetNull(ColumnIndex)

protected void SetNull(
    int ColumnIndex
)

protected:
void SetNull(
    int ColumnIndex
)

member SetNull : 
        ColumnIndex:int -> unit 

protected function SetNull(
    ColumnIndex : int
)

Parâmetros

Comentários

The Script component developer does not use the ScriptBuffer class directly, but indirectly, through the derived classes in the BufferWrapper project item that represent the component's input and outputs.

The developer does not have to use the SetNull method, because the derived classes contain a <ColumnX>_IsNull property for each column that you can use to specify a null value.

Exemplos

The following sample code from the autogenerated BufferWrapper project item demonstrates how the Script component uses the SetNull method.

    Public WriteOnly Property [city_IsNull] As Boolean
        Set
            SetNull(1)
        End Set

End Property