private void GoBackSecondStep(object sender, RoutedEventArgs e)
{
TxtBlock_FingerprintMessage.Text = "Place any of your finger on the device below.";
studentInfo.Firstfinger = null;
studentInfo.Lastfinger = null;
fingerprint.CancelCaptureAndCloseReader(this.OnCaptured);
Expander_ThirdStep.IsExpanded = false;
Expander_ThirdStep.IsEnabled = false;
Expander_SecondStep.IsEnabled = true;
Expander_SecondStep.IsExpanded = true;
}
private void OnCaptured(CaptureResult captureResult)
{
try
{
if (!fingerprintReader.CheckCaptureResult(captureResult))
{
return;
}
DataResult <Fmd> resultConversion = FeatureExtraction.CreateFmdFromFid(captureResult.Data, Constants.Formats.Fmd.ANSI);
if (captureResult.ResultCode != Constants.ResultCode.DP_SUCCESS)
{
fingerprintReader.CurrentReader.Reset();
throw new Exception(captureResult.ResultCode.ToString());
}
// See the SDK documentation for an explanation on threshold scores.
int thresholdScore = DPFJ_PROBABILITY_ONE * 1 / 100000;
if (isAdminLogin)
{
IdentifyResult identifyResult = Comparison.Identify(resultConversion.Data, 0, AdminFingerPrints.ToArray(), thresholdScore, AdminFingerPrints.Count);
if (identifyResult.ResultCode != Constants.ResultCode.DP_SUCCESS)
{
throw new Exception(identifyResult.ResultCode.ToString());
}
if (identifyResult.Indexes.Length > 0)
{
fingerprintReader.CancelCaptureAndCloseReader(this.OnCaptured);
Application.Current.Dispatcher.Invoke((Action) delegate
{
AdminDashboard adminDashboard = new AdminDashboard();
adminDashboard.CurrentAdminId = AdminId.ElementAt(identifyResult.Indexes[0][0]);
adminDashboard.Show();
fingerprintReader.CurrentReader.Dispose();
fingerprintReader.CurrentReader = null;
this.Close();
});
}
}
else
{
IdentifyResult identifyResult = Comparison.Identify(resultConversion.Data, 0, StudenFingerPrints.ToArray(), thresholdScore, StudenFingerPrints.Count);
if (identifyResult.ResultCode != Constants.ResultCode.DP_SUCCESS)
{
throw new Exception(identifyResult.ResultCode.ToString());
}
if (identifyResult.Indexes.Length > 0)
{
fingerprintReader.CancelCaptureAndCloseReader(this.OnCaptured);
Application.Current.Dispatcher.Invoke((Action) delegate
{
StudentDashboard studentDash = new StudentDashboard(StudentId.ElementAt(identifyResult.Indexes[0][0]).ToString(), database);
studentDash.Show();
fingerprintReader.CurrentReader.Dispose();
fingerprintReader.CurrentReader = null;
this.Close();
});
}
}
}
catch (Exception)
{
Application.Current.Dispatcher.Invoke((Action) delegate
{
ErrorHeader1.Text = "Fingerprint device error";
ErrorContent1.Text = "Error while capturing the fingerprint.";
DialogMessage1.IsOpen = true;
});
}
}
private void OnCaptured(CaptureResult captureResult)
{
try
{
if (!fingerprintReader.CheckCaptureResult(captureResult))
{
return;
}
DataResult <Fmd> resultConversion = FeatureExtraction.CreateFmdFromFid(captureResult.Data, Constants.Formats.Fmd.ANSI);
if (captureResult.ResultCode != Constants.ResultCode.DP_SUCCESS)
{
fingerprintReader.CurrentReader.Reset();
Application.Current.Dispatcher.Invoke((Action) delegate
{
richTextBox.Document.Blocks.Clear();
richTextBox.AppendText("\nError\nPlease try again.\nPlace your finger on the device.");
});
throw new Exception(captureResult.ResultCode.ToString());
}
if (isFingerprintDataExist(resultConversion.Data))
{
firstFinger = null;
secondFinger = null;
MessageBox.Show("It seems that there's slightly the same fingerprint data as yours.\n\nPlease use your other fingers.", "Warning", MessageBoxButton.OK, MessageBoxImage.Warning);
Application.Current.Dispatcher.Invoke((Action) delegate
{
richTextBox.Document.Blocks.Clear();
richTextBox.AppendText("\nPlace any finger on the device.");
});
}
else
{
if (firstFinger == null)
{
firstFinger = resultConversion.Data;
Application.Current.Dispatcher.Invoke((Action) delegate
{
richTextBox.Document.Blocks.Clear();
richTextBox.AppendText("\nFinger was captured\nNow Place the same finger on the device.");
});
}
else
{
if (secondFinger == null)
{
secondFinger = resultConversion.Data;
Fmd[] fmds = new Fmd[1];
fmds[0] = firstFinger;
// See the SDK documentation for an explanation on threshold scores.
int thresholdScore = DPFJ_PROBABILITY_ONE * 1 / 100000;
IdentifyResult identifyResult = Comparison.Identify(secondFinger, 0, fmds, thresholdScore, 1);
if (identifyResult.ResultCode != Constants.ResultCode.DP_SUCCESS)
{
throw new Exception(identifyResult.ResultCode.ToString());
}
if (identifyResult.Indexes.Length <= 0)
{
Application.Current.Dispatcher.Invoke((Action) delegate
{
richTextBox.Document.Blocks.Clear();
richTextBox.AppendText("\nFailed, first finger and second finger not matched.\nPlease try again, place any finger on the device.");
firstFinger = null;
secondFinger = null;
});
}
else
{
Application.Current.Dispatcher.Invoke((Action) delegate
{
richTextBox.Document.Blocks.Clear();
richTextBox.AppendText("\nSuccess, please submit your registration now.");
btn_submit.IsEnabled = true;
});
fingerprintReader.CancelCaptureAndCloseReader(this.OnCaptured);
}
}
}
}
} catch (Exception ex)
{
MessageBox.Show("Error while capturing the fingerprint.\nPlease try again later." + ex, "Error Fingerprint", MessageBoxButton.OK, MessageBoxImage.Error);
Application.Current.Dispatcher.Invoke((Action) delegate
{
fingerprintReader.CurrentReader.Dispose();
fingerprintReader.CurrentReader = null;
this.Close();
});
}
}