Does File.Copy prevent another app from writing to the file?

Question

I want to copy some text files, that are written by another app, but I don't want to do anything to prevent the other app. from writing to these files.

I am using File.Copy, from the System.IO namespace, C#, .Net Framework 2.0.

I checked MSDN's documentation, but nothing is specifically stated about the method that File.Copy uses. Is it a wrapper to an unmanaged API call?

Does File.Copy lock, or block the file being copied in any way?

Thanks in advance for any info about this.

Answer 1

If the other app creates its files by specifying FileShare.None, you will receive an UnauthorizedAccessException. So I imagine that you just have to process this specific exception in your app.