FileSystemWatcher的VS轮询来监视文件更改 [英] FileSystemWatcher vs polling to watch for file changes

问题描述

我需要设置的手表在一个目录中创建文件的应用程序，无论是本地或网络驱动器上。

I need to setup an application that watches for files being created in a directory, both locally or on a network drive.

请问 FileSystemWatcher的或定时轮询将是最好的选择。我已经使用在过去这两种方法，但是没有广泛。

Would the FileSystemWatcher or polling on a timer would be the best option. I have used both methods in the past, but not extensively.

哪些问题（性能，可靠性等）与有两种方法？

What issues (performance, reliability etc.) are there with either method?

推荐答案

我已经看到了文件系统观察生产和测试环境失败。现在我认为这是一种方便，但我不认为这是可靠的。我的格局已经观看与文件系统观察变化，但偶尔轮询赶上丢失的文件变化。

I have seen the file system watcher fail in production and test environments. I now consider it a convenience, but I do not consider it reliable. My pattern has been to watch for changes with the files system watcher, but poll occasionally to catch missing file changes.

编辑：如果你有一个UI，你也可以给你的用户刷新更改，而不是投票的能力。我会用一个文件系统观察结合起来这一点。

If you have a UI, you can also give your user the ability to "refresh" for changes instead of polling. I would combine this with a file system watcher.

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