MySql.Data.MySqlClient.Driver.GetColumns C# (CSharp) Method

        public MySqlField[] GetColumns(int count)
        {
            MySqlField[] fields = new MySqlField[count];
            for (int i = 0; i < count; i++)
                fields[i] = new MySqlField(this);
            handler.GetColumnsData(fields);

            return fields;
        }

        public int PrepareStatement(string sql, ref MySqlField[] parameters)
        {
            //TODO: check this
            //ClearFetchedRow();

            packet.Length = sql.Length * 4 + 5;
            byte[] buffer = packet.Buffer;
            int    len    = Encoding.GetBytes(sql, 0, sql.Length, packet.Buffer, 5);

            packet.Position = len + 5;
            buffer[4]       = (byte)DBCmd.PREPARE;
            ExecutePacket(packet);

            packet = stream.ReadPacket();

            int marker = packet.ReadByte();

            if (marker != 0)
            {
                throw new MySqlException("Expected prepared statement marker");
            }

            int statementId = packet.ReadInteger(4);
            int numCols     = packet.ReadInteger(2);
            int numParams   = packet.ReadInteger(2);

            //TODO: find out what this is needed for
            packet.ReadInteger(3);
            if (numParams > 0)
            {
                parameters = owner.GetColumns(numParams);
                // we set the encoding for each parameter back to our connection encoding
                // since we can't trust what is coming back from the server
                for (int i = 0; i < parameters.Length; i++)
                {
                    parameters[i].Encoding = Encoding;
                }
            }

            if (numCols > 0)
            {
                while (numCols-- > 0)
                {
                    packet = stream.ReadPacket();
                    //TODO: handle streaming packets
                }

                ReadEOF();
            }

            return(statementId);
        }