复制大文件时表单应用程序“无响应”？

I've got a file organizer application I'm working on. The files are regularly 500MB to 2GB. Everything works fine, but it is extremely annoying that the application "Stops Responding." What I'd like to do is a byte by byte or meg by meg copy with some Application.DoEvents() in there after each read/write action. Something along these lines, I don't know what the actual classes to use would be so I'm just going to make some stuff up :)I've got a file organizer application I'm worki