private static void FetchReaders()
{
var pcchReader = 0;
_returnCode = ModWinsCard.SCardListReaders(_hContext, null, null, ref pcchReader);
if (_returnCode != ModWinsCard.SCARD_S_SUCCESS)
{
throw new ApplicationException(GetMessage());
}
var readerNameBytes = new byte[pcchReader];
_returnCode = ModWinsCard.SCardListReaders(_hContext, null, readerNameBytes, ref pcchReader);
if (_returnCode != ModWinsCard.SCARD_S_SUCCESS)
{
throw new ApplicationException(GetMessage());
}
var readerName = readerNameBytes.Where(readerNameByte => (char)readerNameByte != 0)
.Aggregate(@"", (current, readerNameByte) => current + (char)readerNameByte);
_cardReaders.Add(new SmartCardReader(readerName, _hContext));
}
public static void Initialize()
{
if (_cardReaders == null || _cardReaders.Count == 0)
{
_cardReaders = new List <SmartCardReader>();
_returnCode = ModWinsCard.SCardEstablishContext(ModWinsCard.SCARD_SCOPE_USER, 0, 0, ref _hContext);
if (_returnCode != ModWinsCard.SCARD_S_SUCCESS)
{
throw new ApplicationException(GetMessage());
}
FetchReaders();
}
}
private static string GetMessage()
{
var message = ModWinsCard.GetScardErrMsg(_returnCode);
return(message == @"?" ? (@"An error occured : " + _returnCode) : message);
}