Get data from RFID reader

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Hello All!

How can i get data from RFID reader, which is in USB port - port?
when reader reads the tag, tags ID should get to Windows form.

Please help me in this regard.

Thanks in Advance.

Posted 13-May-11 18:47pm

sana_26

Updated 13-May-11 18:54pm

Ramalinga Koushik

v2

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Sandeep Mewara 14-May-11 1:37am

Tried anything?

anshumandas 13-Jun-16 23:29pm

I am also using this code but the delegate is not reading the card and not showing any data in the text box.I am using the following configuration:
Port No : Com3
Baud Rate: 9600
Parity None
Data Bit 8
Stop bit 1
Environment C#/ASP.net 4.5
USB port
Code

private void Form1_Load(object sender, EventArgs e)
{
RFID = new SerialPort();
RFID.PortName = "COM3";
RFID.BaudRate = 9600;
RFID.DataBits = 8;
RFID.Parity = Parity.None;
RFID.StopBits = StopBits.One;
RFID.Open();
RFID.ReadTimeout = 2000;
if (RFID.IsOpen)
{
DispString = "";
txtAccessCardNo.Text = "";
}
else
{
RFID.Close();
}
RFID.DataReceived += new SerialDataReceivedEventHandler(RFID_DataReceived);
}
private void RFID_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
if (txtAccessCardNo.Text.Length >= 12)
{
RFID.Close();
}
else
{
DispString = RFID.ReadExisting();
this.Invoke(new EventHandler(DisplayText));
}
}
private void DisplayText(object sender, EventArgs e)
{
txtAccessCardNo.AppendText(DispString);
}

Please help me Thanks in advance...

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OriginalGriff · Answer 1 · 2011-05-13T20:24:00

Just treat it as a standard serial port: Open it, set up a receive data event handler, and process the data.
The only complication you might get is if the RFID reader does any data blocking, and / or encryption, but I can't help you there as I have no idea about the specific reader you are using.

private SerialPort RFID;

// In your form load event
        RFID = new SerialPort();
        RFID.PortName = "COM1";
        RFID.BaudRate = 9600;
        RFID.DataBits = 8;
        RFID.Parity = Parity.None;
        RFID.StopBits = StopBits.One;
        RFID.Open();
        RFID.DataReceived += new SerialDataReceivedEventHandler(RFID_DataReceived);
//
private void RFID_DataReceived(object sender, SerialDataReceivedEventArgs e)
   {
   string data = RFID.ReadExisting();
   myTextBox.Text += data;
   }

Should get you the raw data; it's then up to you to process it appropriately.

[edit]I can't even spell "object" this morning: corrected - OriginalGriff[/edit]