c#文件系统监视程序，如何知道文件完全复制到监视文件夹中。

I am developing a .net application, where I am using FileSystemWatcher class and attached its Created event on a folder. I have to do action on this event (i.e. copy file to some other location). When I am putting a large size into the attached watch folder the event raised immediately even the file copy process still not completed. I don’t want to check this by file.open method. I am developing a .net application, where I am