通过

IDTSRuntimeComponent90.PreExecute Method

  • 项目

Called after PrepareForExecute, and before PrimeOutput and ProcessInput. The developer can supply code that executes once before the component performs its main processing.

命名空间: Microsoft.SqlServer.Dts.Pipeline.Wrapper
程序集: Microsoft.SqlServer.DTSPipelineWrap (in microsoft.sqlserver.dtspipelinewrap.dll)

语法

声明
<DispIdAttribute(13)> _
Sub PreExecute

[DispIdAttribute(13)] 
void PreExecute ()

[DispIdAttribute(13)] 
void PreExecute ()

/** @attribute DispIdAttribute(13) */ 
void PreExecute ()

DispIdAttribute(13) 
function PreExecute ()

备注

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.

线程安全

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

开发平台

有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。

目标平台

有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。

请参阅

参考

IDTSRuntimeComponent90 Interface
IDTSRuntimeComponent90 Members
Microsoft.SqlServer.Dts.Pipeline.Wrapper Namespace