how to Close serial port

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I have following code for open serial port:

comPort = new SerialPort();
comPort.DataReceived += new                      SerialDataReceivedEventHandler(comPort_DataReceived);
//set the properties of our SerialPort Object
comPort.BaudRate = int.Parse(_baudRate);
comPort.DataBits = int.Parse(_dataBits);
comPort.StopBits = (StopBits)Enum.Parse(typeof(StopBits), _stopBits);
comPort.Parity = (Parity)Enum.Parse(typeof(Parity), _parity);
comPort.PortName = _portName;
comPort.Open();

From another form i set all values.
Now i want when i press close button from another page i want to close comport.

I use comport.close(); but it not work.

Posted 5-Dec-11 0:40am

jaideepsinh

Updated 5-Dec-11 0:43am

Rajesh Anuhya

v2

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Rajesh Anuhya 5-Dec-11 6:44am

What is the Error you are getting?

jaideepsinh 5-Dec-11 8:23am

There is no error but after i open comport then its already opend.

3 solutions

Solution 1

As I remember, this[^] answer helps me year ago.

Posted 5-Dec-11 0:48am

Nickos_me

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jaideepsinh 5-Dec-11 7:12am

i use this but not help me.

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jaideepsinh · Accepted Answer · 2011-12-27T20:13:00

I found solution i can't close port which is open because from which form i open port and set all values i closed that form after process so when ever i use port it give default value so now i an not close that form i just hide that form so now i can access open port in all other form.
if (comPort.IsOpen)
{
comPort.Close();
}

Roger Wright · Accepted Answer · 2011-12-27T20:24:00

It's not terribly clear, but it sounds as if you have one form that "owns" the comPort object, and another form that controls it. It would seem reasonable, then, to add an event handler to the owner form that subscribes to the btnClose.Click event on the controlling form. This handler would then call comPort.Close().

how to Close serial port

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