'Serial Messages Issue

I'm receiving in my serial port the message "Hello World!CRLF" (no quotes) at every 1 second, and I'm using ReadExisting() to read the message, but I can't understand why I'm receiving lots of "\0" before every character.

Visual Studio Debug

PuTTy seems to handle the messages just fine, so my code must be the problem. Could someone please help me to figure this out?

PuTTY

Part of my code:

void button1_Click(object sender, EventArgs e)
    {
        try
        {
            _serialPort = new SerialPort(cbPort.Text);
            _serialPort.BaudRate = Int32.Parse(cbBaudrate.SelectedItem.ToString());
            _serialPort.Parity = Parity.None;
            _serialPort.StopBits = StopBits.One;
            _serialPort.DataBits = 8;
            _serialPort.ReadTimeout = 500;
            _serialPort.Open();
            if (_serialPort.IsOpen)
            {
                try
                {
                    ReadSerialData();
                }
                catch (TimeoutException) { }
            }

        }
        catch (Exception er){}

    }
    private void ReadSerialData()
    {
        try
        {
            ReadSerialDataThread = new Thread(ReadSerial);
            ReadSerialDataThread.Start();
        }
        catch (Exception e){}
    }

    private void ReadSerial()
    {
        try
        {
            while (_serialPort.BytesToRead >= 0)
            {
                readserialvalue = _serialPort.ReadExisting();
                ShowSerialData(readserialvalue);
                Thread.Sleep(1);
            }
        }
        catch (Exception e){}
    }


    public delegate void ShowSerialDatadelegate(string r);

    private void ShowSerialData(string s)
    {
        if (rtb_msg.InvokeRequired)
        {
            ShowSerialDatadelegate SSDD = ShowSerialData;
            Invoke(SSDD, s);
        }
        else
        {
            rtb_msg.AppendText(readserialvalue);
        }
    }
c++sharpserial-port


Solution 1:[1]

As sugested by @Hans Passant changing the encoding to BigEndian solved the main issue. Still getting lots of invalid unicode chars, but I think is best to open another thread. Thank you all for the support.

        _serialPort.Encoding = System.Text.Encoding.BigEndianUnicode;

Solution 2:[2]

Are you sure that you want to read from the serial port even if there are 0 bytes to be read? If not, you might want to try changing: while (_serialPort.BytesToRead >= 0) to while (_serialPort.BytesToRead > 0) I suspect you may be reading from the serial port with 0 bytes to be read, which could return a null (\0) value

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 AlexMacabu
Solution 2 Nicholas Ellingson

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