protected override void OnLoad(EventArgs e)
{
_identity = null;
comboUnitId.Items.Clear();
comboUnitId.ResetText();
var units = WinBio.EnumBiometricUnits(WinBioBiometricType.Fingerprint);
Log(string.Format("Found {0} units", units.Length));
if (units.Length == 0)
{
return;
}
for (int i = 0; i < units.Length; i++)
{
Log(string.Format("- Unit id: {0}", units[i].UnitId));
comboUnitId.Items.Add(units[i].UnitId);
string strDeviceInstanceId = units[i].DeviceInstanceId;
Log(string.Format(" Unit id: {0}", strDeviceInstanceId));
string strFirmwareVersion = getFirmwareVersion(strDeviceInstanceId);
if (strFirmwareVersion.Equals(""))
{
Log(string.Format(" Firmware: {0}", units[i].FirmwareVersion.ToString()));
}
else
{
Log(string.Format(" Firmware: {0}", strFirmwareVersion));
}
int lastInvSlash = units[i].DeviceInstanceId.LastIndexOf("\\");
Log(string.Format(" Key code: {0}",
strDeviceInstanceId.Substring(lastInvSlash + 1, strDeviceInstanceId.Length - lastInvSlash - 1)));
}
_unitId = units[0].UnitId;
setComboxSelectedIndex(comboUnitId, 0); // use 1st one by default.
Log(string.Format("Using unit id: {0}", _unitId));
_session = WinBio.OpenSession(WinBioBiometricType.Fingerprint, WinBioPoolType.System, WinBioSessionFlag.Default, null, 0);
Log("Session opened: " + _session.Value);
comboBoxFp.Items.Clear();
comboBoxFp.ResetText();
String[] myArr = new String[] {
"Unknown",//0
"RhThumb",
"RhIndexFinger",
"RhMiddleFinger",
"RhRingFinger",
"RhLittleFinger",
"LhThumb",
"LhIndexFinger",
"LhMiddleFinger",
"LhRingFinger",
"LhLittleFinger"
}; //10
comboBoxFp.Items.AddRange(myArr);
setComboxSelectedIndex(comboBoxFp, 1);
}
private WinBioIdentity AddEnrollment(WinBioSessionHandle session, int unitId, WinBioBiometricSubType subType)
{
WriteLog(string.Format("Beginning enrollment of {0}:", subType));
WinBio.EnrollBegin(session, subType, unitId);
var code = WinBioErrorCode.MoreData;
WinBioRejectDetail rejectDetail;
int good = 0;
for (var swipes = 1; code != WinBioErrorCode.Ok; swipes++)
{
code = WinBio.EnrollCapture(session, out rejectDetail);
switch (code)
{
case WinBioErrorCode.MoreData:
WriteLog(string.Format("Swipe {0} was good", swipes));
good++;
break;
case WinBioErrorCode.BadCapture:
WriteLog(string.Format("Swipe {0} was bad: {1}", swipes, rejectDetail));
break;
case WinBioErrorCode.Ok:
WriteLog(string.Format("Enrollment complete with {0} swipes", swipes));
break;
default:
throw new WinBioException(code, "WinBioEnrollCapture failed");
}
Progress(good);
}
WriteLog("Committing enrollment..");
bool isNewTemplate;
WinBioIdentity identity = null;
try
{
isNewTemplate = WinBio.EnrollCommit(session, out identity);
WriteLog(isNewTemplate ? "New template committed." : "Template already existing.");
if (!isNewTemplate)
{
WinBio.Identify(session, out identity, out subType, out rejectDetail);
}
EnableDisableOk(true);
}
catch (Exception e)
{
WriteLog("Error on AddEnrollment. Error:" + e.Message);
}
return(identity);
}
private void buttonEnroll_Click(object sender, EventArgs e)
{
WinBioBiometricSubType subType = (WinBioBiometricSubType)comboBoxFp.SelectedIndex;
if (subType == WinBioBiometricSubType.Unknown)
{
Log("Please select a finger index, not Unknown.");
return;
}
ThreadPool.QueueUserWorkItem(delegate
{
try
{
Log("Put your finger on sensor...");
WinBioBiometricSubType subFactor;
WinBioRejectDetail rejectDetail;
while (true)
{
_unitId = WinBio.Identify(_session, out _identity, out subFactor, out rejectDetail);
Log("No. This finger has been enrolled before. Change another one...");
}
}
catch (WinBioException ex)
{
Log("OK. This finger not yet be enrolled before.");
}
try
{
_identity = AddEnrollment(_session, _unitId, subType);
Log(string.Format("Identity: {0}", _identity));
}
catch (WinBioException ex)
{
Log(ex);
if (ex.ErrorCode == WinBioErrorCode.DuplicateEnrollment)
{
Log(string.Format("Please select another finger index or just delete it for a new one."));
}
}
});
}
