IDTSBuffer90.GetBLOBLength Method

Gets the number of bytes contained in a column in an IDTSBuffer90.

Espace de noms: Microsoft.SqlServer.Dts.Pipeline.Wrapper
Assembly: Microsoft.SqlServer.DTSPipelineWrap (in microsoft.sqlserver.dtspipelinewrap.dll)

Syntaxe

'Déclaration
Sub GetBLOBLength ( _
    <InAttribute> hRow As Integer, _
    <InAttribute> hCol As Integer, _
    <OutAttribute> ByRef pdwBytes As UInteger _
)

void GetBLOBLength (
    [InAttribute] int hRow,
    [InAttribute] int hCol,
    out uint pdwBytes
)

void GetBLOBLength (
    [InAttribute] int hRow, 
    [InAttribute] int hCol, 
    [OutAttribute] unsigned int% pdwBytes
)

void GetBLOBLength (
    /** @attribute InAttribute() */ int hRow, 
    /** @attribute InAttribute() */ int hCol, 
    /** @attribute OutAttribute() */ /** @ref */ UInt32 pdwBytes
)

JScript ne prend pas en charge le passage d'arguments de type valeur par référence.

Paramètres

• hRow
  The handle of the row.

• hCol
  The handle of the column in the row.

• pdwBytes
  An out parameter that contains the number of bytes in the row.

Notes

The GetBLOBLength method is used to determine the number of bytes in a column that contains a binary large object (BLOB) data type, such as a DT_IMAGE. This method is typically called before a call to the GetBLOBData method. The third parameter to GetBLOBData is the number of bytes to retrieve from the BLOB. You call this method before calling GetBLOBData to retrieve all the bytes in a BLOB 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

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

Voir aussi

Référence

IDTSBuffer90 Interface
IDTSBuffer90 Members
Microsoft.SqlServer.Dts.Pipeline.Wrapper Namespace