How to get relative path from absolute path

Question

There\'s a part in my apps that displays the file path loaded by the user through OpenFileDialog. It\'s taking up too much space to display the whole path, but I don\'t want

Answer 1

If you know that toPath is contained by fromPath then you can keep it simple. I'll leave out the asserts for brevity.

public static string MakeRelativePath(string fromPath, string toPath)
{
    // use Path.GetFullPath to canonicalise the paths (deal with multiple directory seperators, etc)
    return Path.GetFullPath(toPath).Substring(Path.GetFullPath(fromPath).Length + 1);
}