Hello Jeff,

I looked into this a bit and came up with the following two methods. I
hope you still find them useful. I've added quite a lot of comments to
make things clear.

    public static string MyGetCasedFolderPath(string origPath) {
        DirectoryInfo origInfo = new DirectoryInfo(origPath);

        // This shouldn't really be there, as it doesn't have
        // anything to do with the purpose the name of this
        // method communicates.

        if (!origInfo.Exists)
            return null;

        return MyGetCasedFolderPath(origInfo).FullName;
    }

    public static DirectoryInfo MyGetCasedFolderPath(DirectoryInfo info) {
        string prefix;
        if (info.Parent == null)
            // Always upper case the drive letter
            return new DirectoryInfo(info.FullName.ToUpper( ));
        else
            prefix = MyGetCasedFolderPath(info.Parent).FullName;

        // We use a search expression, which reduces the number of items
        // that are being found, while still returning the correctly cased name.
        // I'm making the assumption here that this is more efficient than
        // comparing:
        // if (dirInfo.Name.Equals(info.Name,
StringComparison.CurrentCultureIgnoreCase))
        // It would probably be useful to test whether this assumption is true.
        foreach (DirectoryInfo dirInfo in info.Parent.GetDirectories(info.Name,
SearchOption.TopDirectoryOnly))
            return new DirectoryInfo(Path.Combine(prefix, dirInfo.Name));

        // If we get here, there's something wrong
        throw new Exception(String.Format("DirectoryInfo {0} doesn't exist in
its own parent.", info.FullName));
    }

               Oliver Sturm