PipelineBuffer.IsNull Method

Artículo
12/15/2008

Checks to see if the data in a buffer column is null.

Espacio de nombres: Microsoft.SqlServer.Dts.Pipeline
Ensamblado: Microsoft.SqlServer.PipelineHost (in microsoft.sqlserver.pipelinehost.dll)

Sintaxis

'Declaración
Public Function IsNull ( _
    columnIndex As Integer _
) As Boolean

public bool IsNull (
    int columnIndex
)

public:
bool IsNull (
    int columnIndex
)

public boolean IsNull (
    int columnIndex
)

public function IsNull (
    columnIndex : int
) : boolean

Parámetros

columnIndex
The index of the column in the buffer row.

Valor devuelto

true if the column contains null; otherwise, false.

Notas

It is recommended that you call the IsNull method prior to calling a data type accessor method, such as GetBoolean, because the PipelineBuffer will produce a ColumnIsNullException if the column is null.

Seguridad para subprocesos

Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Plataformas

Plataformas de desarrollo

Para obtener una lista de las plataformas compatibles, vea Requisitos de hardware y software para instalar SQL Server 2005.

Plataformas de destino