IDTSRuntimeComponent90.PreExecute Method

Articolo
12/15/2008

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

Spazio dei nomi: Microsoft.SqlServer.Dts.Pipeline.Wrapper
Assembly : Microsoft.SqlServer.DTSPipelineWrap (in microsoft.sqlserver.dtspipelinewrap.dll)

Sintassi

'Dichiarazione
<DispIdAttribute(13)> _
Sub PreExecute

[DispIdAttribute(13)] 
void PreExecute ()

[DispIdAttribute(13)] 
void PreExecute ()

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

DispIdAttribute(13) 
function PreExecute ()

Osservazioni

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.

Thread Safety

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.

Piattaforme

Piattaforme di sviluppo

Per un elenco delle piattaforme supportate, vedere Requisiti hardware e software per l'Installazione di SQL Server 2005.

Piattaforme di destinazione

Per un elenco delle piattaforme supportate, vedere Requisiti hardware e software per l'Installazione di SQL Server 2005.

Vedere anche

Riferimento

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

Condividi tramite