Npgsql.NpgsqlCommand.IsParamNameChar C# (CSharp) 메소드

        private static bool IsParamNameChar(char ch)
        {
            if (ch < '.' || ch > 'z')
            {
                return false;
            }
            else
            {
                return ((byte)ParamNameCharTable.GetValue(ch) != 0);
            }
        }