XMLTask.SuspendExecution 方法
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
指示可执行文件需要挂起。 运行时引擎调用此方法。
public:
virtual void SuspendExecution();public void SuspendExecution ();abstract member SuspendExecution : unit -> unit
override this.SuspendExecution : unit -> unitPublic Sub SuspendExecution ()实现
示例
下面的代码示例是自定义任务的重写方法的示例 SuspendExecution 。
public void SuspendExecution()
{
lock (this)
{
// If a suspend is required, do it.
if (m_suspendRequired != 0)
ChangeEvent(m_canExecute, false);
}
// The application cannot return from Suspend until the task
// is suspended.
// This can happen in one of two ways:
// 1) The m_suspended event occurs, indicating that the
// execute thread has suspended, or
// 2) the canExecute flag is set, indicating that a suspend is
// no longer required.
WaitHandle [] suspendOperationComplete = {m_suspended, m_canExecute};
WaitHandle.WaitAny(suspendOperationComplete);
}
Public Sub SuspendExecution()
lock (Me)
{
If m_suspendRequired <> 0 Then
ChangeEvent(m_canExecute, False)
End If
}
' The application cannot return from Suspend until the task
' is suspended. This can happen in one of two ways:
' 1) The m_suspended event occurs, indicating that the
' execute thread has suspended, or
' 2) the canExecute flag is set, indicating that a suspend is
' no longer required.
Dim suspendOperationComplete As WaitHandle() = {m_suspended, m_canExecute}
WaitHandle.WaitAny(suspendOperationComplete)
注解
此方法可用于 XMLTask ，而不考虑 OperationType 值。
此方法不在代码中使用。 它在遇到断点时由运行时调用。
但是， IDTSSuspend 如果编写公开断点的多线程自定义任务，则需要提供此方法的代码，该方法是从类继承的。 如果你的任务是单线程的，这意味着你 Execute 在自定义任务中的实现不会启动新线程，则无需实现此接口。 有关编写自定义任务的详细信息，请参阅 开发自定义任务。