Called after PrepareForExecute, and before PrimeOutput and ProcessInput. The developer can supply code that executes once before the component performs its main processing.
命名空間: Microsoft.SqlServer.Dts.Pipeline.Wrapper
組件: Microsoft.SqlServer.DTSPipelineWrap (in microsoft.sqlserver.dtspipelinewrap.dll)
語法
'宣告
<DispIdAttribute(13)> _
Sub PreExecute
[DispIdAttribute(13)]
void PreExecute ()
[DispIdAttribute(13)]
void PreExecute ()
/** @attribute DispIdAttribute(13) */
void PreExecute ()
DispIdAttribute(13)
function PreExecute ()
備註
Component developers should factor as much functionality into PreExecute as possible because it is called only once per component execution, unlike ProcessInput, which is called once for each input buffer. Components should locate the indexes of their input and output columns in the IDTSBuffer90 by calling the FindColumnByLineageID method of the BufferManager.
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
IDTSRuntimeComponent90 Interface
IDTSRuntimeComponent90 Members
Microsoft.SqlServer.Dts.Pipeline.Wrapper Namespace