Question

I am trying to send some data to a LED display that works over serial port. This code does the job over VB6 but i needed to convert it to C#. Sadly it does not work. Any ideas?

VB6 (Example)

MSComm1.CommPort = 1

MSComm1.Settings = "9600,N,8,1"

MSComm1.PortOpen = True

MSComm1.Output = Chr(170)

MSComm1.Output = Chr(2)

C# (Example)

var serialPort1 = new SerialPort("COM1", 9600, Parity.None, 8, StopBits.One);

serialPort1.Open();

serialPort1.Write(((char)170).ToString());

serialPort1.Write(((char)2).ToString());

serialPort1.Close();

I think the problem is about serialPort1.Write function but i could not figure it out. Can you help please?

Answer 1

Also figured out how to do it with serialPort class. The important deal is using designer to add serialPort1 definition instead of manual definition with “var serialPort1 = new SerialPort(“COM1″, 9600, Parity.None, 8, StopBits.One);”. My problem occured because of missing definitions i guess. Here is the sample :

Byte[] _bytesToSend = new Byte[7];
_bytesToSend[0] = 170;
_bytesToSend[1] = 2;
serialPort1.Open();
serialPort1.Write(_bytesToSend, 0, _bytesToSend.Length);
serialPort1.Close();