/// <summary>
/// Attempts to listen for a single fingerprint read.
/// Returns true on a successful listen, or false if something went wrong
/// </summary>
public bool Listen()
{
Debug("Identifying user...");
try
{
WinBioIdentity identity;
WinBioBiometricSubType subFactor;
WinBioRejectDetail rejectDetail;
WinBio.Identify(_session, out identity, out subFactor, out rejectDetail);
Debug(string.Format("Identity: {0}", identity));
Debug(identity.TemplateGuid.ToString());
onIdentify(identity.AccountSid.ToString());
return(true);
}
catch (WinBioException ex)
{
if (ex.ErrorCode == WinBioErrorCode.UnknownID)
{
onUnknownIdentity();
return(true);
}
Debug(ex);
}
catch (Exception ex)
{
Debug(ex.Message);
}
return(false);
}
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);
}
public void Identify()
{
WinBioIdentity identity;
WinBioBiometricSubType subFactor;
WinBioRejectDetail rejectDetail;
var unitId = WinBio.Identify(_handle, out identity, out subFactor, out rejectDetail);
Console.WriteLine("Unit Id: {0}", unitId);
Console.WriteLine("Identity: {0}", identity);
Console.WriteLine("Sub factor: {0}", subFactor);
Console.WriteLine("Reject details: {0}", rejectDetail);
}
protected override void OnShown(EventArgs e)
{
base.OnShown(e);
if (StartEnrollment)
{
ThreadPool.QueueUserWorkItem(delegate
{
try
{
OpenBiometricSession();
var identity = AddEnrollment(_session, _unitId, WinBioBiometricSubType.RhIndexFinger);
TemplateFingerGuid = identity.TemplateGuid;
}
catch (WinBioException ex)
{
WriteLog(ex.Message);
}
});
}
else
{
ThreadPool.QueueUserWorkItem(delegate
{
OpenBiometricSession();
for (int i = 0; i < 5; i++)
{
try
{
WinBioIdentity identity;
WinBioBiometricSubType subFactor;
WinBioRejectDetail rejectDetail;
WinBio.Identify(_session, out identity, out subFactor, out rejectDetail);
TemplateFingerGuid = identity.TemplateGuid;
this.Invoke(new Action(CloseWindow));
return;
}
catch (WinBioException ex)
{
WriteLog("Please retry!! Error:" + ex.Message);
}
}
});
}
}
private void buttonIdentify_Click(object sender, EventArgs e)
{
ThreadPool.QueueUserWorkItem(delegate
{
Log("Identifying user...");
try
{
WinBioIdentity identity;
WinBioBiometricSubType subFactor;
WinBioRejectDetail rejectDetail;
WinBio.Identify(_session, out identity, out subFactor, out rejectDetail);
Log(string.Format("Identity: {0}", identity));
}
catch (WinBioException ex)
{
Log(ex);
}
});
}
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."));
}
}
});
}
private void buttonIdentify_Click(object sender, EventArgs e)
{
ThreadPool.QueueUserWorkItem(delegate
{
Log("Identifying user...");
try
{
WinBioBiometricSubType subFactor;
WinBioRejectDetail rejectDetail;
_unitId = WinBio.Identify(_session, out _identity, out subFactor, out rejectDetail);
setComboxSelectedIndex(comboUnitId, comboUnitId.Items.IndexOf(_unitId));
Log(string.Format("Sensor used: unit id {0}", _unitId));
Log(string.Format("Identity = {0}", _identity));
updateCurNameFromIdentity();
Log(string.Format("Identity Name = {0}", _name));
Log(string.Format("SubFactor= {0}", subFactor));
}
catch (WinBioException ex)
{
Log(ex);
}
});
}
