Candor.StringExtensions.ToProperNameCase C# (CSharp) Method

        public static string ToProperNameCase(this string text)
        {
            if (string.IsNullOrEmpty(text))
                return String.Empty;
            text = text.Replace("_", " ");
            var newText = new StringBuilder(text.Length * 2);
            var prevTriggerCaseUpper = true;
            var allLetters = true;
            foreach (var curr in text)
            {
                if (prevTriggerCaseUpper && char.IsLetter(curr))
                    newText.Append(char.ToUpper(curr));
                else
                    newText.Append(char.ToLower(curr));

                allLetters = (allLetters && char.IsLetter(curr));
                prevTriggerCaseUpper = (char.IsWhiteSpace(curr) || curr == '-' || curr == '_' || (char.IsNumber(curr) && prevTriggerCaseUpper));
            }

            if (allLetters && text.ToUpper() == text)
                return text; //acronym

            return newText.ToString();
        }