How to get the relative filename to a specific directory?

Question

I have a method which is doing a file copy. The 'root' is specified by the user on the command line, which I sanitize with Path.GetFullPath(input).

I need to get the path of the file relative to that root, so the following cases would return:

Root        FilePath                    Return
y:\         y:\temp\filename1.txt       temp\filename1.txt
y:\dir1     y:\dir1\dir2\filename2.txt  dir2\filename2.txt

Answer 1

You can write

var relative = new Uri(rootPath).MakeRelativeUri(new Uri(filePath));

http://msdn.microsoft.com/en-us/library/system.uri.makerelativeuri.aspx