IDTSBuffer90.GetBLOBLength Method

  • 發行項

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

命名空間: Microsoft.SqlServer.Dts.Pipeline.Wrapper
組件: Microsoft.SqlServer.DTSPipelineWrap (in microsoft.sqlserver.dtspipelinewrap.dll)

語法

'宣告
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 不支援以傳址方式傳遞值類型的引數。

參數

  • 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.

備註

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.

執行緒安全性

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.

平台

開發平台

如需受支援的平台清單，請參閱＜安裝 SQL Server 2005 的硬體和軟體需求＞。

目標平台

如需受支援的平台清單，請參閱＜安裝 SQL Server 2005 的硬體和軟體需求＞。

請參閱

參考

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