System.IO.Ports.SerialPortBase.AdvancePosition C# (CSharp) Méthode

        protected virtual void AdvancePosition(int count)
        {
            _incomingBufferPosition = (_incomingBufferPosition + count) % _incomingBuffer.Length;   // increase the pointer and wrap it if needed
            _incomingBufferValidLength -= count;                                                    // keep the virtual end at the same position
            if (_incomingBufferValidLength == 0)
            {
                _incomingBufferPosition = 0;
            }
        }