ToUnderscoreCase / ToHyphenCase

gistfile1.cs

        /// <summary>
        /// Converts PascalCase and camelCase to underscore_case. Leaves underscore_case unaffected.
        /// </summary>
        /// <param name="s">the string to convert</param>
        /// <returns>the underscore_cased string</returns>
        internal static string ToUnderscoreCase(this string s)
        {
            return Regex.Replace(s, @"(\p{Ll})(\p{Lu})", "$1_$2").ToLower();
        }

        /// <summary>
        /// Converts PascalCase and camelCase to hyphen-case. Leaves hyphen-case unaffected.
        /// </summary>
        /// <param name="s">the string to convert</param>
        /// <returns>the hyphen-cased string</returns>
        internal static string ToHyphenCase(this string s)
        {
            return Regex.Replace(s, @"(\p{Ll})(\p{Lu})", "$1-$2").ToLower();
        }