public void Stop()
{
if (!NFCHandler.IsInitialized)
{
return;
}
if (_currentTag != null)
{
_currentTag.Dispose();
}
try
{
if (_nfcReader != null)
{
_nfcReader.StopPolling();
// spin for a second to allow the NFC reader to timeout
for (var i = 0; i < 100; i++)
{
Thread.Sleep(10);
}
}
NFCHandler.Release();
}
catch (Exception ex)
{
// ignore errors on cleanup
}
}
private void StartNFC()
{
if (_nfcReader != null)
{
Stop();
}
if (ShuttingDown)
{
return;
}
NFCHandler.Init();
Log("StartNFC: " + NFCHandler.Readers.Count + " NFC readers");
foreach (NFCReader rdr in NFCHandler.Readers)
{
Log("NFCHandler.Readers: " + rdr.Name);
// Tested with ACS reader
if (rdr.Name.ToLower().Contains("acs"))
{
_nfcReader = rdr;
_nfcReader.TagFound += _nfcReader_TagFound;
_nfcReader.TagLost += _nfcReader_TagLost;
_nfcReader.StartPolling();
}
}
}
private void theForm_FormClosed(object sender, FormClosedEventArgs e)
{
if (theTag != null)
{
theTag.Dispose();
}
NFCHandler.Release();
System.Environment.Exit(0);
}
private void bRelease_Click(object sender, EventArgs e)
{
if (!NFCHandler.IsInitialized)
{
return;
}
NFCHandler.Release();
dReaders.Items.Clear();
}
private void bInitialize_Click(object sender, EventArgs e)
{
NFCHandler.Init();
dReaders.Items.Clear();
foreach (NFCReader rdr in NFCHandler.Readers)
{
dReaders.Items.Add(rdr.Name);
}
if (dReaders.Items.Count > 0)
{
dReaders.SelectedIndex = 0;
}
}
private async void Button_Click(object sender, RoutedEventArgs e)
{
getid.IsEnabled = false;
NFCHandler.Init();
dReaders.Items.Clear();
foreach (NFCReader rdr in NFCHandler.Readers)
{
dReaders.Items.Add(rdr.Name);
}
if (dReaders.Items.Count > 0)
{
dReaders.SelectedIndex = 0;
}
if (!NFCHandler.IsInitialized)
{
MessageBox.Show("card not installed");
getid.IsEnabled = true;
}
else if (dReaders.Items.Count == 0)
{
MessageBox.Show("Reader Not Found!!!"); getid.IsEnabled = true;
}
else
{
while (true)
{
theTag = NFCHandler.Readers[dReaders.SelectedIndex].Connect();
if (theTag != null)
{
var tagId = (BitConverter.ToUInt32(theTag.bUID, 0) % 10000000); //this is an example to play with your card number, if you are developing a system, you may need something like this
//var tagId = theTag.bUID; //original tagid
//var tagId = (BitConverter.ToUInt32(theTag.bUID, 0); //sometimes some rfid uses this format to show tag number
idno.Text = tagId.ToString();
refno.Text = theTag.ATR.ToString();
await Task.Delay(2000);
NFCHandler.Release();
getid.IsEnabled = true;
break;
}
}
}
}
