/// <summary>
/// Wraps the PCSC function
/// LONG SCardEndTransaction(
/// SCARDHANDLE hCard,
/// DWORD dwDisposition
/// );
/// </summary>
/// <param name="Disposition">A value from DISCONNECT enum</param>
public override void EndTransaction(DISCONNECT Disposition)
{
if (PCSC.SCardIsValidContext(context) == PCSC.SCARD_S_SUCCESS)
{
lastError = PCSC.SCardEndTransaction(cardHandle, (UInt32)Disposition);
ThrowSmartcardException("SCardEndTransaction", lastError);
}
}
/// <summary>
/// Wraps the PSCS function
/// LONG SCardBeginTransaction(
/// SCARDHANDLE hCard
// );
/// </summary>
public override void BeginTransaction()
{
if (PCSC.SCardIsValidContext(context) == PCSC.SCARD_S_SUCCESS)
{
lastError = PCSC.SCardBeginTransaction(cardHandle);
ThrowSmartcardException("SCardBeginTransaction", lastError);
}
}
/// <summary>
/// Wraps the PCSC function
/// LONG SCardReleaseContext(
/// IN SCARDCONTEXT hContext
/// );
/// </summary>
public void ReleaseContext()
{
if (PCSC.SCardIsValidContext(context) == PCSC.SCARD_S_SUCCESS)
{
lastError = PCSC.SCardReleaseContext(context);
ThrowSmartcardException("SCardReleaseContext", lastError);
context = IntPtr.Zero;
}
}
/// <summary>
/// Wraps the PCSC function
/// LONG SCardReleaseContext(
/// IN SCARDCONTEXT hContext
/// );
/// </summary>
private static void ReleaseContext(IntPtr hContext)
{
if (PCSC.SCardIsValidContext(hContext) == PCSC.SCARD_S_SUCCESS)
{
int lastError = PCSC.SCardReleaseContext(hContext);
ThrowSmartcardException("SCardReleaseContext", lastError);
//Marshal.FreeHGlobal(hContext);
hContext = IntPtr.Zero;
}
}
/// <summary>
/// Wraps the PCSC function
/// LONG SCardDisconnect(
/// IN SCARDHANDLE hCard,
/// IN DWORD dwDisposition
/// );
/// </summary>
/// <param name="Disposition"></param>
public override void Disconnect(DISCONNECT Disposition)
{
if (PCSC.SCardIsValidContext(context) == PCSC.SCARD_S_SUCCESS)
{
lastError = PCSC.SCardDisconnect(cardHandle, (uint)Disposition);
cardHandle = IntPtr.Zero;
try
{
ThrowSmartcardException("SCardDisconnect", lastError);
}
finally
{
ReleaseContext();
}
}
}
