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filepath - How can one get an absolute or normalized file path in .NET?

How can one with minimal effort (using some already existing facility, if possible) convert paths like c:aaabb..ccc to c:aaaccc?

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I would write it like this:

public static string NormalizePath(string path)
{
    return Path.GetFullPath(new Uri(path).LocalPath)
               .TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar)
               .ToUpperInvariant();
}

This should handle few scenarios like

  1. uri and potential escaped characters in it, like

    file:///C:/Test%20Project.exe -> C:TEST PROJECT.EXE

  2. path segments specified by dots to denote current or parent directory

    c:aaabb..ccc -> C:AAACCC

  3. tilde shortened (long) paths

    C:Progra~1 -> C:PROGRAM FILES

  4. inconsistent directory delimiter character

    C:/Documentsabc.txt -> C:DOCUMENTSABC.TXT

Other than those, it can ignore case, trailing directory delimiter character etc.


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