private static universityStudent _getUniversityStudentFromStudentNumber(string StudentNumber)
{
SqlConnection conn = new SqlConnection(conRegistrationDB);
conn.Open();
string query = "SELECT [student_number],[firstname],[lastname],[id_Number]";
query = query + " FROM [RegistrationDB].[dbo].[registered_students] WHERE [student_number] = '" + StudentNumber + "' ";
SqlCommand cmd = new SqlCommand(query, conn);
DataTable dt = new DataTable();
dt.Load(cmd.ExecuteReader());
universityStudent _student = new universityStudent();
_student.StudentNumber = StudentNumber;
if (dt.Rows.Count > 0)
{
DataRow dr = dt.Rows[0];
if (dr.IsNull("firstname")) { _student.FirstName = null; } else { _student.FirstName = (string)dr["firstname"]; };
if (dr.IsNull("lastname")) { _student.LastName = null; } else { _student.LastName = (string)dr["lastname"]; };
if (dr.IsNull("id_number")) { _student.IDNumber = null; } else { _student.IDNumber = (string)dr["id_Number"]; };
}
conn.Close();
return _student;
}
private void btnMatchConfirm_Click(object sender, EventArgs e)
{
//cancelMatchScan = true;
bool enrolledForCourse = true;
bckScanFinger.CancelAsync();
Application.DoEvents();
attendanceRecord NewAttendance = new attendanceRecord();
student ThisMatchedStudent = dlRegistration.GetStudentFromStudentNumber(txtMatchStudentNumber.Text);
course EnrolledCourse = new course("a","a");
//See if there were multiple course codes selected. If more than one selected see for which one the student is registered
if (cmbCourses.Items.Count >= 1)
{
List<course> courses = dlRegistration.getCoursesForStudentNumber(ThisMatchedStudent.StudentNumber);
List<course> _selectedCourses = new List<course>();
foreach (course courseItem in cmbCourses.Items)
{
course _tempCourse = new course(courseItem.CourseCode, courseItem.Description);
_selectedCourses.Add(_tempCourse);
}
foreach (course courseItem in _selectedCourses)
{
foreach (course matchCourse in courses)
{
if (matchCourse.CourseCode == courseItem.CourseCode)
EnrolledCourse = new course(matchCourse.CourseCode, matchCourse.Description);
}
}
//Lets make sure the student is enrolled in this course
if (EnrolledCourse.CourseCode == "a")
{
enrolledForCourse = false;
course tempCourse = (course)cmbCourses.Items[0];
EnrolledCourse = new course(tempCourse.CourseCode, tempCourse.Description);
}
}
else
{
course tempCourse = (course)cmbCourses.Items[0];
EnrolledCourse = new course(tempCourse.CourseCode,tempCourse.Description);
}
byte[] templateBuffer = (byte[])fingerprintTemplate.Save();
if (ThisMatchedStudent.Enrolled)
{
//If the student has a registered fingerprint then check the grace setting.
//We use the score2 pvtComplSyncClass as the grace setting
//Before we confirm the student as attended we have to check the student number typed in the text box
//if the textbox student number is the same as the matchedStudentNumber then
//we can use the ThisMatchedStudent otherwise
//we have match the student again using the given template
//and use that as the category and score result
if (txtMatchStudentNumber.Text == matchedStudentNumber)
{
NewAttendance.FingerAID = matchedFingerID - 1;
NewAttendance.FingerAImage = new byte[0];
NewAttendance.FingerATemplate = templateBuffer;
NewAttendance.FingerBID = 0;
NewAttendance.FingerBImage = new byte[0];
NewAttendance.FingerBTemplate = new byte[0];
NewAttendance.ScanResult = "A";
NewAttendance.score1 = matchedScore;
NewAttendance.score2 = 0;
strConfirmMessage = "Identified: " + ThisMatchedStudent.FirstName + " " + ThisMatchedStudent.LastName + ". Student number: " + ThisMatchedStudent.StudentNumber;
lblConfirmMessage.ForeColor = Color.Green;
}
else
{
//The student changed the student number. This means that we now have to first see if the template scanned
//belong to the new studentnumber
if (VerifyFingerprint(ThisMatchedStudent, fingerprintTemplate))
{
NewAttendance.FingerAID = matchedFingerID - 1;
NewAttendance.FingerAImage = new byte[0];
NewAttendance.FingerATemplate = templateBuffer;
NewAttendance.FingerBID = 0;
NewAttendance.FingerBImage = new byte[0];
NewAttendance.FingerBTemplate = new byte[0];
if (enrolledForCourse)
{
NewAttendance.ScanResult = "A";
}
else
{
NewAttendance.ScanResult = "B";
}
NewAttendance.score1 = matchedScore;
NewAttendance.score2 = 0;
strConfirmMessage = "Identified: " + ThisMatchedStudent.FirstName + " " + ThisMatchedStudent.LastName + ". Student number: " + ThisMatchedStudent.StudentNumber;
lblConfirmMessage.ForeColor = Color.Green;
}
else
{
//If the template does not belong to the new student then we need to look at the grace
//If grace is anything less than 3 then we add the matched FingedID and template, but with a score
//of 0 and a ScanResult of "C"
int grace = 0;
bool converted = Int32.TryParse(ThisMatchedStudent.CardHistory, out grace);
if (converted)
{
if (grace < 3)
{
NewAttendance.FingerAID = 6;
NewAttendance.FingerAImage = new byte[0];
NewAttendance.FingerATemplate = templateBuffer;
NewAttendance.FingerBID = 0;
NewAttendance.FingerBImage = new byte[0];
NewAttendance.FingerBTemplate = new byte[0];
NewAttendance.ScanResult = "C";
NewAttendance.score1 = 0;
NewAttendance.score2 = 0;
strConfirmMessage = "No Match: " + ThisMatchedStudent.FirstName + " " + ThisMatchedStudent.LastName + ". Student number: " + ThisMatchedStudent.StudentNumber;
lblConfirmMessage.ForeColor = Color.Red;
//We have to update the registration system with the grace number
}
else
{
//Fingerprints didn't match give it a "D" score
NewAttendance.FingerAID = 0;
NewAttendance.FingerAImage = new byte[0];
NewAttendance.FingerATemplate = new byte[0];
NewAttendance.FingerBID = 0;
NewAttendance.FingerBImage = new byte[0];
NewAttendance.FingerBTemplate = new byte[0];
NewAttendance.ScanResult = "D";
NewAttendance.score1 = 0;
NewAttendance.score2 = 0;
strConfirmMessage = "No Match: " + ThisMatchedStudent.FirstName + " " + ThisMatchedStudent.LastName + ". Student number: " + ThisMatchedStudent.StudentNumber;
lblConfirmMessage.ForeColor = Color.Red;
}
}
else
{ //If the conversion failed then there were no grace period then we can update the user
NewAttendance.FingerAID = 6;
NewAttendance.FingerAImage = new byte[0];
NewAttendance.FingerATemplate = templateBuffer;
NewAttendance.FingerBID = 0;
NewAttendance.FingerBImage = new byte[0];
NewAttendance.FingerBTemplate = new byte[0];
NewAttendance.ScanResult = "C";
NewAttendance.score1 = 0;
NewAttendance.score2 = 0;
strConfirmMessage = "No Match: " + ThisMatchedStudent.FirstName + " " + ThisMatchedStudent.LastName + ". Student number: " + ThisMatchedStudent.StudentNumber;
lblConfirmMessage.ForeColor = Color.Red;
//We have to update the registration system with the grace number
}
}
}
//If the grace setting is anything less than 3 then mark the student's record as graced
//and increment the grace
NewAttendance.StudentNumber = ThisMatchedStudent.StudentNumber;
NewAttendance.CardNumber = ThisMatchedStudent.CardNumber;
NewAttendance.AuditNumber = "";
NewAttendance.ClassTime = DateTime.Now;
NewAttendance.CourseCode = EnrolledCourse.CourseCode;
NewAttendance.TimeStamp = DateTime.Now;
NewAttendance.lat = "";
NewAttendance.lon = "";
}
else
{
//What happens if the student is not enrolled?
//If the student is not fingerprint enrolled then create a record in the registration DB for the user
//and mark the grace as 1
NewAttendance.StudentNumber = txtMatchStudentNumber.Text;
NewAttendance.CardNumber = "";
NewAttendance.AuditNumber = "";
NewAttendance.ClassTime = DateTime.Now;
NewAttendance.CourseCode = EnrolledCourse.CourseCode;
NewAttendance.FingerAID = 6;
NewAttendance.FingerAImage = new byte[0];
NewAttendance.FingerATemplate = templateBuffer;
NewAttendance.FingerBID = 0;
NewAttendance.FingerBImage = new byte[0];
NewAttendance.FingerBTemplate = new byte[0];
NewAttendance.ScanResult = "X";
NewAttendance.score1 = 0;
NewAttendance.TimeStamp = DateTime.Now;
NewAttendance.lat = "";
NewAttendance.lon = "";
universityStudent tempStudent = new universityStudent();
tempStudent = dlRegistration.GetUniversityStudentFromStudentNumber(txtMatchStudentNumber.Text);
if (tempStudent.FirstName != null || tempStudent.LastName != null)
{
strConfirmMessage = "Fingerprint not enrolled: " + ThisMatchedStudent.FirstName + " " + ThisMatchedStudent.LastName + ". Student number: " + ThisMatchedStudent.StudentNumber;
lblConfirmMessage.ForeColor = Color.Orange;
}
else
{
strConfirmMessage = "Fingerprint not enrolled: Student number: " + ThisMatchedStudent.StudentNumber;
lblConfirmMessage.ForeColor = Color.Orange;
}
//We have to now register the student's fingerprints here
}
dlExamID.InsertAttendanceRecord(NewAttendance);
//Prepare the screen for next student
btnMatchConfirm.Enabled = false;
txtMatchStudentNumber.Enabled = false;
lblMatchResult.Text = "";
txtMatchStudentNumber.Text = "";
nfView1.Template = null;
nfView1.Image = null;
nfView1.ResultImage = null;
lblIdentifyActionMessage.Text = "Please scan right index finger";
loadConfirmMessage();
}
