BulkInsertTask.SuspendRequired 属性

public:
 property bool SuspendRequired { bool get(); void set(bool value); };

public bool SuspendRequired { get; set; }

member this.SuspendRequired : bool with get, set

Public Property SuspendRequired As Boolean

属性值

如果任务在遇到断点时会暂停，则为真。

实现

示例

以下代码示例是自定义任务被覆盖 SuspendRequired 属性的一个示例。

public bool SuspendRequired   
{  
     get  
    {   
        // m_suspendRequired is an Private integer declared in the custom task.   
        return m_suspendRequired != 0;   
    }  

    set  
    {  
    // This lock is also taken by Suspend().  Since it is possible for the package to be   
    // suspended and resumed in quick succession, this property "put" might happen   
    // before the actual Suspend() call.  Without the lock, the Suspend() might reset   
    // the canExecute event after we set it to abort the suspension.   
         lock (this)   
    {  
        Interlocked.Exchange(ref m_suspendRequired, value ? 1 : 0);   
            if (!value)   
                ResumeExecution();   
    }  
}  

Public ReadOnly Property SuspendRequired() As Boolean  
    Get   
        ' m_suspendRequired is an Private integer declared in the custom task.   
        Return m_suspendRequired <> 0  
     End Get  

Public WriteOnly Property SuspendRequired() As Boolean  
    Set (ByVal Value As Boolean)   
        ' This lock is also taken by Suspend().  Since it is possible for the package to be   
        ' suspended and resumed in quick succession, this property "put" might happen   
       ' before the actual Suspend() call.  Without the lock, the Suspend() might reset  
       ' the canExecute event after it is set to abort the suspension.   
         lock (Me)  
         {  
               Interlocked.Exchange(m_suspendRequired, value ? 1 : 0)   
                     If Not value Then  
                       ResumeExecution()  
                     End If  
             }  
         End Set  
End Property  

注解

该属性在代码中没有设置。 当遇到断点时，任务和容器的运行时会设置它。

不过，如果你写了一个多线程自定义任务来暴露断点，你需要为这个方法提供代码，这个方法是从 IDTSSuspend 类继承下来的。 如果你的任务是单线程的，也就是说你自定义任务中的实现 Execute 不会启动新线程，那么你就不需要实现这个接口。 关于编写自定义任务的更多信息，请参见 “开发自定义任务”。