IDTSEvents.OnQueryCancel Method

Статья
12/15/2008

Called at any juncture in task processing where it is feasible to cancel execution. This event is raised by tasks and containers to determine whether they should stop running.

Пространство имен: Microsoft.SqlServer.Dts.Runtime
Сборка: Microsoft.SqlServer.ManagedDTS (in microsoft.sqlserver.manageddts.dll)

Синтаксис

'Декларация
Function OnQueryCancel As Boolean

bool OnQueryCancel ()

bool OnQueryCancel ()

boolean OnQueryCancel ()

function OnQueryCancel () : boolean

Возвращаемое значение

A Boolean that indicates if the task should stop running.

Замечания

This event is called by the task to determine if the package wishes the task to cease executing. Because the package gives control to the task to execute and does not terminate tasks randomly, there needs to be a juncture at which the package may inform the task that it is attempting to shut down. If the value is true, the task should shut down and a cancelled message is returned from the Execute method of the task. If the value is false, the task continues to run as usual.

Синхронизация потоков

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.

Платформы

Платформы разработки

Список поддерживаемых платформ см. в разделе Hardware and Software Requirements for Installing SQL Server 2005.

Целевые платформы

Список поддерживаемых платформ см. в разделе Hardware and Software Requirements for Installing SQL Server 2005.

См. также

Справочник

IDTSEvents Interface
IDTSEvents Members
Microsoft.SqlServer.Dts.Runtime Namespace

Поделиться через