Serial port reading loop

[Renault Jan]

Hello!

I am new in Visual Studio 2019, but have more experience with C and C++ because of long years with MCU-s.

Also, i have an STM32 device, that send over Serial port an AES encrypted Hex data any 2 seconds. All messages are finished with newline. My program (with User Interface, not a console one) is able to read from serial and to decrypt the data, even in loop still working good, but the problem is that in loop i can't use the disconnect function, so my program stay in "infinite loop".


public void button1_Click(object sender, EventArgs e)
{
try
{
serialPort1.PortName = cBoxComPort.Text;
serialPort1.BaudRate = 9600;
serialPort1.DtrEnable = true;
serialPort1.ReadTimeout = 5000;
serialPort1.WriteTimeout = 500;
serialPort1.Open();
lblStatusCom.Text = "Connected";
lblMessage.Text = "I am on!";

while (serialPort1.IsOpen)
{
string mgs1 = serialPort1.ReadLine();
byte[] key = { 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F };
byte[] enc = StringToByteArray(mgs1);
byte[] dec = Decrypt(enc, key);
lblMessage.Text = getString(dec);
}
}
catch(Exception err)
{
MessageBox.Show(err.Message,"Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
//lblStatusCom.Text = "Disconnected";
}
}


How can i "put to background" this loop process, so that a user can click to disconnect, if he wish to quit the reading?

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