Remove the special Character from string AND Get first four characer from string.

Remove the special Character from string. AND Get first four characer from string.

        public string RemoveSpecialChars(string str)
        {
            string[] chars = new string[] { ",", ".", "/", "!", "@", "#", "$", "%", "^", "&", "*", "'", "\"", ";", "_", "(", ")", ":", "|", "[", "]", "=", "==" };
            for (int i = 0; i < chars.Length; i++)
            {
                if (str.Contains(chars[i]))
                {
                    str = str.Replace(chars[i], "");
                }
            }
            return str;
        }

Get first four characer from string.

        public string GetFirstFourCharacters(string s)
        {
            return (s.Length < 4) ? s : s.Substring(0, 4);
        }