How to rename a fileInfo by adding \\?\ prefix to avoid System.IO.PathTooLongException?

Question

I'm looking for a way to avoid System.IO.PathTooLongException. I read that I could put \\?\ in front of a long path.

The problem is that I have FileInfo objects and I ask me how to add the \\?\ path prefix to my FileInfo paths without writting useless code.

Note that I have folders with several thousand of files to copy and I don't want that my application takes a lot of useless time during his process.

Thanks.

DirectoryInfo dir = new DirectoryInfo(sourceDirName);
FileInfo[] files = dir.GetFiles(Constants.ALL_FILES, SearchOption.AllDirectories);

foreach (FileInfo file in files)
{
    file.CopyTo(destAbsolutePath);
}