ToCamelCase & ToCamelCase2

ToCamelCase.cs

        /// <summary>
        /// Converts dash/underscore delimited words into camel casing.
        /// The first word within the output should be capitalized only if the original word was capitalized.
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static string ToCamelCase(string str)
        {
            StringBuilder sb = new StringBuilder();
            string tempStr = str;
            char lastChar = 'a';
            foreach (char character in str)
            {
                if (character == '-' || character == '_')
                {

                }
                else
                {
                    if (lastChar == '_' || lastChar == '-')
                    {
                        sb.Append(character.ToString().ToUpper());
                    }
                    else
                    {
                        sb.Append(character);
                    }
                }
                lastChar = character;
            }
            return sb.ToString();
        }

ToCamelCase2.cs

        /// <summary>
        /// Same as ToCamelCase, just in one line.
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static string ToCamelCase2(string str)
        {
            return Regex.Replace(str, @"[_-](\w)", m => m.Groups[1].Value.ToUpper());
        }