Relative path in c#

Question

I was looking for a way to get a relative directory and file path (both) either directly or from a full path. It seems I cannot find a satisfying answer... and I googled a lot.

The problem is that I need to upload files on FTP and i need the format "Hostftp:port/"+"Directory/subdirectory" to create the ftp request

Example

myftp:8008/Users
myftp:8008/Users/Data
myftp:8008/Users/Data/Anagraphics
myftp:8008/Work

etc etc.

I pick the files from my computer so they are like

C:\users\MyPc\UsersData\Users
C:\users\MyPc\UsersData\Users\Data
C:\users\MyPc\UsersData\Users\Data\Anagraphics
C:\users\MyPc\UsersData\Work

I want them listed like

Users
Users\Data
Users\Data\Anagraphics
Work

so I can concatenate the string and make

myftp:8008/Users
myftp:8008/Users/Data
myftp:8008/Users/Data/Anagraphics
myftp:8008/Work

How to do it???

It is not very clear what you are asking. Please edit you question to provide more clear examples, and improve your formatting so it can easily be read and understood — musefan, Sep 05 '13 at 10:16

score 1 · Accepted Answer · edited May 23 '17 at 12:05

List<string> paths = new List<string>()
{
    @"C:\users\MyPc\UsersData\Users",
    @"C:\users\MyPc\UsersData\Users\Data",
    @"C:\users\MyPc\UsersData\Users\Data\Anagraphics",
    @"C:\users\MyPc\UsersData\Work"
};

var MatchingChars =
  from len in Enumerable.Range(0, paths.Min(s => s.Length)).Reverse()
  let possibleMatch = paths.First().Substring(0, len)
  where paths.All(f => f.StartsWith(possibleMatch))
  select possibleMatch;

var LongestDir = Path.GetDirectoryName(MatchingChars.First());
var ftpPaths = paths.Select(p=>Path.Combine("myftp:8008",p.Substring(LongestDir.Length +1)).Replace(@"\", "/"));

ftpPaths :

myftp:8008/Users 
myftp:8008/Users/Data 
myftp:8008/Users/Data/Anagraphics 
myftp:8008/Work

To Find the common file path from list of paths I used one of answer of this SO Question

Relative path in c#

1 Answers1