Specifies whether or not an exception is thrown when the user cancels the operation ：指定是否在用户取消操作时引发异常。默认值为uicanceloption . throwexception
If you do not wish this exception to be thrown when the user cancels the operation , set the enumeration value to 如果您不希望当用户取消操作时引发此异常，请将枚举值设置为
Event to receive notification before a new browser window is opened , allowing you to cancel the action if necessary 事件以在打开新浏览器窗口前接收通知，从而允许您在必要时取消操作。
To receive notification when the e - mail has been sent or the operation has been canceled , add an event handler to the 若要在已发送电子邮件或已取消操作时收到通知，请将一个事件处理程序添加到
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。
You can use these events to execute code before the data operation occurs , including canceling the operation , and after the data operation has taken place 可以使用这些事件在数据操作发生之前执行代码（包括取消操作）和之后执行代码。
The parameters allow you to overwrite existing files , rename the file , show the progress of the operation , and allow the user to cancel the operation 方法复制文件。使用参数可以改写现有文件、重命名文件、显示操作的进度并允许用户取消操作。
Is not specified and the user performing the operation does not own the specified table or view , sql server 2005 returns an error message , and the operation is canceled ，并且执行该操作的用户没有指定的表或视图，则sql server 2005将返回错误消息，同时取消操作。
Its parameters provide the ability to overwrite existing files , rename the file , show the progress of the operation , and allow the user to cancel the operation 方法可以复制文件。该方法的参数提供了各种功能，用于改写现有文件、重命名文件、显示操作进度以及允许用户取消操作。
For example , you might create a splash screen or a startup dialog box saying that the application will access personal information , and have the user choose to continue or cancel 例如，可以创建一个启动屏幕或启动对话框，告诉用户应用程序将访问个人信息，并让用户选择是继续操作还是取消操作。
