This event is often used to stop the canceling operation 此事件通常用于停止取消操作。
Control returns after an update , insert , or cancel operation 控件在更新、插入或取消操作后返回到该模式。
Since bandeddatacallback may be called every few seconds , the application should indicate to the user that the cancel operation is in progress 因为每隔几秒钟就可能调用bandeddatacallback ,所以应用程序应指示用户取消操作正在进行中。
Finally , you could easily imagine extending the scope of this example to allow requesters to submit detailed status queries on long - running operations or even to cancel operations that are in progress 最后,您很容易想到扩展此示例的范围,允许请求者发送详细状态请求到长时间操作甚至允许取消进行中的操作。
This allows you to provide an event - handling method that performs a custom routine , such as stopping the cancel operation if it would put the row in an undesired state , whenever this event occurs 允许您提供以下事件处理方法,即只要发生此事件就执行一个自定义例程,如:如果取消操作将行置于不希望有的状态,则停止该操作。