C # regex get json string keys

            // define regular expressions parsed content between [and], including [and]
            // pay attention to this. *? Written, additional question marks are as short as possible match, which is very important, otherwise most long match
            string patttern = @ "([) *.? (])";

 

            // parsed [and] between the content stored in the match
            Match match = Regex.Match (jsonString, patttern , RegexOptions.IgnoreCase);

 

            // parsed content between a plurality of [and], matches stored in the
            List <String> LST = new new List <String> ();
            the MatchCollection matches = Regex.Matches (JSONString, patttern, RegexOptions.IgnoreCase);
            the foreach (Match The matches in m)
            {
                lst.Add (m.Value);
            }