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public static void Capitalize()
{
    TextInfo oTextInfo = CultureInfo.CurrentCulture.TextInfo;
    StringBuilder oSb = new StringBuilder();
    string Folder;

    var DirectoryToCapitalize =
       (from p in Directory.GetDirectories(@"C:\MyFiles", "*.*", SearchOption.AllDirectories)
        let directories = p.Substring(p.LastIndexOf("\\") + 1)
        let words = directories.Split(' ')                    
        from word in words                   
        where word.Length > 0 && char.IsLower(word[0])
        group word by p into groupedChanges                
        select new
        {
            Folder = groupedChanges.Key,
            Words = (   from p in groupedChanges
                        where groupedChanges.Key.IndexOf("\\" + p) > 0
                        select "\\" + p)
                        .Union( from p in groupedChanges
                                where groupedChanges.Key.IndexOf(" " + p) > 0
                                select " " + p)            
        });
    
    foreach (var GroupItem in DirectoryToCapitalize)
    {
        Folder = GroupItem.Folder;

        foreach (var Word in GroupItem.Words)
            Folder = Folder.Replace(Word, oTextInfo.ToTitleCase(Word));

        oSb.AppendLine(GroupItem.Folder); // Original path
        oSb.AppendLine(Folder); // New path

        // Can't rename C:\MyFiles\test to C:\MyFiles\Test
        // We need to rename the folder with a temp name and rename it back with capitalized words
        //Directory.Move(Folder, Folder + "1");
        //Directory.Move(Folder + "1", Folder);
    }

    Console.WriteLine(oSb.ToString());
}