System.Data.Common.DbConnectionOptions.IsKeyNameValid C# (CSharp) Method

        private static bool IsKeyNameValid(string keyname)
        {
            if (null != keyname)
            {
#if DEBUG
                bool compValue = s_connectionStringValidKeyRegex.IsMatch(keyname);
                Debug.Assert(((0 < keyname.Length) && (';' != keyname[0]) && !char.IsWhiteSpace(keyname[0]) && (-1 == keyname.IndexOf('\u0000'))) == compValue, "IsValueValid mismatch with regex");
#endif
                return ((0 < keyname.Length) && (';' != keyname[0]) && !char.IsWhiteSpace(keyname[0]) && (-1 == keyname.IndexOf('\u0000')));
            }
            return false;
        }