public bool connectCard(int rdrIndex)
{
connActive = true;
if (rdrIndex == 0)
{
//retCode = ACR122uCard.SCardConnect(hContext, rdrStates[rdrIndex].RdrName.ToString(), ACR122uCard.SCARD_SHARE_SHARED,
// ACR122uCard.SCARD_PROTOCOL_T0 | ACR122uCard.SCARD_PROTOCOL_T1, ref hCard, ref Protocol);
}
else if (rdrIndex == 1)
{
//retCode1 = ACR122uCard.SCardConnect(hContext, rdrStates[rdrIndex].RdrName.ToString(), ACR122uCard.SCARD_SHARE_SHARED,
// ACR122uCard.SCARD_PROTOCOL_T0 | ACR122uCard.SCARD_PROTOCOL_T1, ref hCard, ref Protocol);
}
if (retCode != ACR122uCard.SCARD_S_SUCCESS)
{
//MessageBox.Show(Card.GetScardErrMsg(retCode), "Card not available");
//this.Text = ACR122uCard.GetScardErrMsg(retCode).ToString() + " " + "Card not available 0 " + retCode.ToString();
connActive = false;
return(false);
}
if (retCode1 != ACR122uCard.SCARD_S_SUCCESS)
{
//MessageBox.Show(Card.GetScardErrMsg(retCode), "Card not available");
this.Text = ACR122uCard.GetScardErrMsg(retCode).ToString() + " " + "Card not available 1 " + retCode.ToString();
connActive = false;
return(false);
}
return(true);
}
internal void establishContext()
{
retCode = ACR122uCard.SCardEstablishContext(ACR122uCard.SCARD_SCOPE_SYSTEM, 0, 0, ref hContext);
if (retCode != ACR122uCard.SCARD_S_SUCCESS)
{
MessageBox.Show("Check your device and please restart again", "Reader not connected");
connActive = false;
return;
}
}
public List <string> ListReaders()
{
int ReaderCount = 0;
List <string> AvailableReaderList = new List <string>();
//Make sure a context has been established before
//retrieving the list of smartcard readers.
retCode = ACR122uCard.SCardListReaders(hContext, null, null, ref ReaderCount);
if (retCode != ACR122uCard.SCARD_S_SUCCESS)
{
//MessageBox.Show(ACR122uCard.GetScardErrMsg(retCode));
//connActive = false;
}
byte[] ReadersList = new byte[ReaderCount];
//Get the list of reader present again but this time add sReaderGroup, retData as 2rd & 3rd parameter respectively.
retCode1 = ACR122uCard.SCardListReaders(hContext, null, ReadersList, ref ReaderCount);
if (retCode != ACR122uCard.SCARD_S_SUCCESS)
{
//MessageBox.Show(ACR122uCard.GetScardErrMsg(retCode));
}
string rName = "";
int indx = 0;
if (ReaderCount > 0)
{
// Convert reader buffer to string
while (ReadersList[indx] != 0)
{
while (ReadersList[indx] != 0)
{
rName = rName + (char)ReadersList[indx];
indx = indx + 1;
}
//Add reader name to list
AvailableReaderList.Add(rName);
rName = "";
indx = indx + 1;
}
}
GC.Collect();
return(AvailableReaderList);
}
public bool connectCard()
{
connActive = true;
retCode = ACR122uCard.SCardConnect(hContext, readername, ACR122uCard.SCARD_SHARE_SHARED,
ACR122uCard.SCARD_PROTOCOL_T0 | ACR122uCard.SCARD_PROTOCOL_T1, ref hCard, ref Protocol);
if (retCode != ACR122uCard.SCARD_S_SUCCESS)
{
//MessageBox.Show(Card.GetScardErrMsg(retCode), "Card not available");
//this.Text = ACR122uCard.GetScardErrMsg(retCode).ToString() + " " + "Card not available " + retCode.ToString();
connActive = false;
return(false);
}
return(true);
}
private void deviceStatusUpdater(int retVal)
{
if (retVal == 0)
{
//tsslblDevice.Text = "Connected to " + this.RdrState.RdrName.ToString() + " device.";
//tsslblDevice.Text = "Connected to " + this.rdrStates[0].RdrName.ToString() + " device.";
tsslblDevice.Image = Z.IconLibrary.FarmFresh.Icon.AcceptButton.GetImage16();
/*tmrDeviceConn.Enabled = false;
* tmrReadTags.Enabled = true;*/
}
else
{
tsslblDevice.Text = ACR122uCard.GetScardErrMsg(retCode);
tsslblDevice.Image = Z.IconLibrary.FarmFresh.Icon.Error.GetImage16();
/*tmrDeviceConn.Enabled = true;
* tmrReadTags.Enabled = false;*/
}
}
private string getcardUID()//only for mifare 1k cards
{
string cardUID = "";
byte[] receivedUID = new byte[256];
ACR122uCard.SCARD_IO_REQUEST request = new ACR122uCard.SCARD_IO_REQUEST();
request.dwProtocol = ACR122uCard.SCARD_PROTOCOL_T1;
request.cbPciLength = System.Runtime.InteropServices.Marshal.SizeOf(typeof(ACR122uCard.SCARD_IO_REQUEST));
byte[] sendBytes = new byte[] { 0xFF, 0xCA, 0x00, 0x00, 0x00 }; //get UID command for Mifare cards
int outBytes = receivedUID.Length;
int status = ACR122uCard.SCardTransmit(hCard, ref request, ref sendBytes[0], sendBytes.Length, ref request, ref receivedUID[0], ref outBytes);
if (status != ACR122uCard.SCARD_S_SUCCESS)
{
cardUID = "Error";
}
else
{
cardUID = BitConverter.ToString(receivedUID.Take(4).ToArray()).Replace("-", string.Empty).ToLower();
}
return(cardUID);
}
public void SelectDevice()
{
//MessageBox.Show(this.ListReaders().Count.ToString());
if (this.ListReaders().Count > 0)
{
List <string> availableReaders = this.ListReaders();
this.RdrState = new ACR122uCard.SCARD_READERSTATE();
readername = availableReaders[0].ToString();//selecting first device
this.RdrState.RdrName = readername;
if (retCode == 0)
{
MessageBox.Show("Device successfully connected.", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
MessageBox.Show(ACR122uCard.GetScardErrMsg(retCode).ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
else
{
MessageBox.Show(ACR122uCard.GetScardErrMsg(retCode).ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void tmrReadTags_Tick(object sender, EventArgs e) // for reading the tags
//MessageBox.Show(availableReaders[0].ToString() + " " + availableReaders[1].ToString());
//return;
{
try
{
if (DeviceCount > 0)
{
retCode = ACR122uCard.SCardConnect(hContext, rdrState1.RdrName.ToString(), ACR122uCard.SCARD_SHARE_SHARED,
ACR122uCard.SCARD_PROTOCOL_T0 | ACR122uCard.SCARD_PROTOCOL_T1, ref hCard, ref Protocol);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString());
}
if (retCode == ACR122uCard.SCARD_S_SUCCESS)
{
string cardUID = getcardUID();
//this.Text = cardUID; //displaying on text block
this.Text = ACR122uCard.GetScardErrMsg(retCode);
if (cardUID != "63000000" && cardUID != "Error")
{
//if (!StudentQueue.Contains(cardUID))
//{
//StudentQueue.Enqueue(cardUID);
checkStudentTag(cardUID);
//}
}
}
//try{
// if (DeviceCount > 1)
// {
// retCode1 = ACR122uCard.SCardConnect(hContext, rdrState2.RdrName.ToString(), ACR122uCard.SCARD_SHARE_SHARED,
// ACR122uCard.SCARD_PROTOCOL_T0 | ACR122uCard.SCARD_PROTOCOL_T1, ref hCard, ref Protocol);
// }
//}
//catch (Exception ex)
//{
// MessageBox.Show(ex.Message.ToString());
//}
//if (retCode1 == ACR122uCard.SCARD_S_SUCCESS)
//{
// string cardUID = getcardUID();
// //displaying on text block
// if (cardUID != "63000000" && cardUID != "Error")
// {
// //if (!StudentQueue.Contains(cardUID))
// //{
// //StudentQueue.Enqueue(cardUID);
// checkStudentTag(cardUID);
// //}
// }
//}
//retCode = 0;
//retCode1 = 0;
//hCard = 0;
//Protocol = 0;
//hContext = 0;
}
