如何检查文件锁？ [英] How to check for file lock?

问题描述

有没有什么办法来检查，而无需使用try / catch块的文件是否被锁定？

Is there any way to check whether a file is locked without using a try/catch block?

现在，我知道的唯一途径是刚刚打开该文件并捕获任何 System.IO.IOException 。

Right now, the only way I know of is to just open the file and catch any System.IO.IOException.

推荐答案

没有，遗憾的是，如果你仔细想想，这些信息将变得毫无价值无论如何，因为该文件可能被锁定在第二天第二（阅读：短的时间跨度）

No, unfortunately, and if you think about it, that information would be worthless anyway since the file could become locked the very next second (read: short timespan).

为什么要特别指出的是，你需要知道，如果该文件被锁定呢？明知可能给我们提供好的建议一些其他的方式。

Why specifically do you need to know if the file is locked anyway? Knowing that might give us some other way of giving you good advice.

如果您的code是这样的：

If your code would look like this:

if not locked then
    open and update file

随后两线之间，另一个进程可以很容易地锁定文件，让你同样的问题，你试图避免首先：例外

Then between the two lines, another process could easily lock the file, giving you the same problem you were trying to avoid to begin with: exceptions.

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