Smart Card Encoder using C# code

Question

I'm new to this device,

I only tried RFID Mifare RC522 and read its serial ID

This time I'm trying to read the serial ID of RFID card using this Smart Card Encoder (LA118-M1) using C# coding in MS Visual Studio.

What class library should I download.

I tried using this code:

SerialPort _serialPort = new SerialPort("COM2");
_serialPort.Open();
bool _check = _serialPort.IsOpen;
string _string = _serialPort.ReadLine();
_serialPort.Close();

Result: Nothing happens

What is the "ERROR" here? You should know to put the full Exception and Stacktrace when you ask a "It doesn't work" question. — Aron, Apr 21 '15 at 03:50
`string _string = _serialPort.ReadLine();` the program will stop running here but no result — See Yah Later, Apr 21 '15 at 06:12

Orifjon · Accepted Answer · 2015-04-21T07:43:01.840

1

You are not listening serial port. On your initializing code, open COM port and listen to it (Add DataReceived delegate). It would be something like this:

public void Open() 
{
   _serialPort = new SerialPort("COM2");
   _serialPort.Open();
   _serialPort.DataReceived +=port_DataReceived;
} 
void port_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
   string line = ((SerialPort)sender).ReadLine();
}
// Close serial port somewhere

You can learn more about SerialPort here or here

edited Apr 21 '15 at 07:43

answered Apr 21 '15 at 04:09

Orifjon

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Should I make a function having a parameters of Sender and event? – See Yah Later Apr 21 '15 at 05:16
is this same with **EventHandler** – See Yah Later Apr 21 '15 at 05:24
Yes, you can use conventional event handler if you prefer. – Orifjon Apr 21 '15 at 05:50
_serialPort.DataReceived += (sender, evt) => Error on **sender** – See Yah Later Apr 21 '15 at 05:57
If the process won't go to the **port_DataReceived**, means theirs no data coming from the **SerialPort** right? – See Yah Later Apr 21 '15 at 06:36
Maybe. But you need to check `ErrorReceived` event. There may be other conditions which affects communication – Orifjon Apr 21 '15 at 07:32
where should I look for it? – See Yah Later Apr 21 '15 at 07:38
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/75775/discussion-between-orifjon-and-see-yah-later). – Orifjon Apr 21 '15 at 07:52

Smart Card Encoder using C# code

1 Answers1