PipelineBuffer.GetBlobLength Method

Gets the number of bytes contained in a binary large object (BLOB) PipelineBuffer column. This method is not CLS-compliant.

Espace de noms: Microsoft.SqlServer.Dts.Pipeline
Assembly: Microsoft.SqlServer.PipelineHost (in microsoft.sqlserver.pipelinehost.dll)

Syntaxe

'Déclaration
<CLSCompliantAttribute(False)> _
Public Function GetBlobLength ( _
    columnIndex As Integer _
) As UInteger

[CLSCompliantAttribute(false)] 
public uint GetBlobLength (
    int columnIndex
)

[CLSCompliantAttribute(false)] 
public:
unsigned int GetBlobLength (
    int columnIndex
)

/** @attribute CLSCompliantAttribute(false) */ 
public UInt32 GetBlobLength (
    int columnIndex
)

CLSCompliantAttribute(false) 
public function GetBlobLength (
    columnIndex : int
) : uint

Paramètres

columnIndex
The index of the column containing the BLOB.

Valeur de retour

The number of bytes in the binary large object.

Notes

The GetBlobLength method is used to determine the number of bytes contained in a PipelineBuffer column containing a BLOB data type, such as a DT_IMAGE. This method is typically called prior to a call to the GetBlobData method. The third parameter to GetBlobData is the number of bytes to retrieve from the BLOB. You call GetBlobLength prior to GetBlobData when you want to retrieve all the bytes in a BLOB PipelineBuffer column.

Sécurité des threads

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.

Plateformes

Plateformes de développement

Pour obtenir la liste des plateformes prises en charge, consultez Configuration matérielle et logicielle requise pour l'installation de SQL Server 2005.

Plateformes cibles