private void OnPcScExceptionReceived(object s, PCSCException a)
{
var eventargs = new NfcEventArgs();
eventargs.Type = NfcEventType.Unknown;
eventargs.Data = $"Error: {a.Message} ({a.SCardError.ToString()})";
PcScNfcEventReceived?.Invoke(this, eventargs);
}
private void RaisePcScEvent(SCRState state, string readerName)
{
bool doRaiseEvent = true;
var eventargs = new NfcEventArgs();
eventargs.ReaderName = readerName;
eventargs.Data = $"New State for {readerName}: {state.ToString()}";
switch (state)
{
case SCRState.Changed:
eventargs.Type = NfcEventType.StatusChanged;
break;
case SCRState.Empty:
case SCRState.Unavailable:
eventargs.Type = NfcEventType.Disconnected;
lastUniqueId = null;
break;
case SCRState.Present:
eventargs.Type = NfcEventType.Connected;
eventargs.UniqueCardID = state.CardIsPresent() ? GetUid(readerName) : null;
if (eventargs.UniqueCardID == lastUniqueId)
{
doRaiseEvent = false;
}
break;
case SCRState.Unknown:
eventargs.Type = NfcEventType.Unknown;
break;
default:
doRaiseEvent = false;
break;
}
if (doRaiseEvent && lastEventType != eventargs.Type)
{
string debugText = $"PcscWrapper: {eventargs.Type.ToString()} UID: ";
debugText += eventargs.UniqueCardID ?? "N/A";
Debug.WriteLine(debugText);
System.Threading.Thread.Sleep(200);
PcScNfcEventReceived?.Invoke(this, eventargs);
lastUniqueId = eventargs.UniqueCardID;
lastEventType = eventargs.Type;
}
}
