YuriyGuts.RegexBuilder.RegexNodeCharacterSet.InitializeCharactersFromString C# (CSharp) Method

        private void InitializeCharactersFromString(string value)
        {
            if (value == null)
            {
                throw new ArgumentNullException("value", "CharacterListExpression cannot be null");
            }
            characterListExpression = RegexStringEscaper.Escape(value, false);
            characters = characterListExpression.ToCharArray();
        }