public void Close()
{
if (handler != null && !handler.IsInvalid && !handler.IsClosed)
{
handler.Dispose();
}
handler = null;
}
internal static extern uint SCardTransmit(CardSafeHandler hCard, SCARD_IO_REQUEST pioSendPci, byte[] pbSendBuffer, int cbSendLength, [In, Out] SCARD_IO_REQUEST pioRecvPci, [Out] byte[] pbRecvBuffer, [In, Out] ref int pcbRecvLength);
internal static extern uint SCardBeginTransaction(CardSafeHandler hCard);
internal static extern uint SCardEndTransaction(CardSafeHandler hCard, CardDisposition dwDisposition);
internal static extern uint SCardConnect(CardContextSafeHandler hContext, String szReader, CardShareMode dwShareMode, CardProtocols dwPreferredProtocols, out CardSafeHandler phCard, out CardProtocols pdwActiveProtocol);
internal static extern uint SCardGetAttrib(CardSafeHandler hCard, CardAttrId dwAttrId, IntPtr pbAttr, ref int pcbAttrLen);
internal static extern uint SCardTransmit(CardSafeHandler hCard, SCARD_IO_REQUEST pioSendPci, byte[] pbSendBuffer, int cbSendLength, [In, Out] SCARD_IO_REQUEST pioRecvPci, [Out] byte[] pbRecvBuffer, [In, Out] ref int pcbRecvLength);
internal static extern uint SCardGetAttrib(CardSafeHandler hCard, CardAttrId dwAttrId, IntPtr pbAttr, ref int pcbAttrLen);
internal static extern uint SCardEndTransaction(CardSafeHandler hCard, CardDisposition dwDisposition);
internal static extern uint SCardConnect(CardContextSafeHandler hContext, String szReader, CardShareMode dwShareMode, CardProtocols dwPreferredProtocols, out CardSafeHandler phCard, out CardProtocols pdwActiveProtocol);
internal static extern uint SCardBeginTransaction(CardSafeHandler hCard);
