C# - 无法在发布模式下打开串口

Question

I'm having trouble using my serial port in Visual Studio 2019 using release mode.

When calling serial.Open() I don't get any errors nor exceptions, but Serial.isOpen return false and I can't write anything on the port without catching the exception "port closed".

This problem only occurs in release mode. Does anyone has tips ?

Here is my code

I initialise the port,

static SerialPort serialPi = new SerialPort();

Then I the set the parameters right before opening the port

 public static void openPort(string portName, int baudRate)
        {
            try
            {
                serialPi.BaudRate = baudRate;
                serialPi.PortName = portName;
                serialPi.Open();
                serialPiPlugged = true;
            }
            catch
            {
                MessageBox.Show("ERROR WHILE OPENING PORT");
            }
        }

The baudrate come from a combobox with a list of baudrates (converted to int) and the port name from a combobox filled with a list of available port.

Also, openPort(string,int) Is called from another class.

Answer 1

I figured it out.

The problem was that Mission Planner (the program I am working on) has a class SerialPort with some modifications on the main methods such as open or close.

I was using this class instead of the one in System.IO.Ports;

Thank you for your answers !