从完整目录路径中删除一个目录

Question

I have a directory path of C:\\Subdir1\\Subdir2\\Subdir3\\filename.xml .

I need to first check if the file, filename.xml exists in the root of "Subdir2" (one level back) before looking in "Subdir3" . How can I easly parse this with Path.GetPathRoot(filename) ?

IE

First see if this is true:

C:\\Subdir1\\Subdir2\\filename.xml

If not true, then default to C:\\Subdir1\\SubDir2\\Subdir3\\filename.xml for the file.

Answer 1

Directory.GetParent(dir).FullName

Answer 2

试试这个Directory.GetParent和System.IO.File.Exists