public DataTable getEligibleCourse(string student_id)
{
Student student = new Student(student_id);
student.getStudentInformation();
DataTable courses_offered_this_semester_table = Registration.getCoursesFromSemester(student.current_semester_id, student.program_id);
return courses_offered_this_semester_table;
}
public static bool dropRegistration(Student student, Course course)
{
string query = "delete from REGISTRATION where "+
"course_id= "+course.course_id +
" and student_id =" + student.student_id +
" and year_semester='"+ GLOBALS.current_semester + "'";
return GLOBALS.db_command(query);
}
public static bool checkCourseTaken(Student student, Course course)
{
DataTable dt = GLOBALS.db_query(
"select * from REGISTRATION " +
"where course_id = "+course.course_id+
" and student_id = "+student.student_id+
" and (passed_course = 1 or passed_course is null)");
if (dt.Rows.Count == 0)
{
return false;
}
return true;
}
public static bool checkCoursePrereqNotTaken(Student student, Course course)
{
// if there is no pre-req course
if (course.prereq_course == null || course.prereq_course == "") return false;
DataTable dt = GLOBALS.db_query(
"select * from REGISTRATION " +
"where course_id = " + course.prereq_course +
" and student_id = " + student.student_id +
" and passed_course = 1");
if (dt.Rows.Count == 1)
{
return false;
}
return true;
}
private void btnReportRegistrationStudent_Click(object sender, EventArgs e)
{
// check for blank
if (txtStudentID.Text != "" && txtStudentID.Text.All(char.IsDigit))
{
// check for valid student id
Student student = new Student(txtStudentID.Text);
if (student.getStudentInformation())
{
GenerateReportRegistrationInterface generate_report_registration_interface
= new GenerateReportRegistrationInterface(txtStudentID.Text);
generate_report_registration_interface.ShowDialog();
}
else
{
MessageBox.Show("Fail to generate report! No student with that ID found!");
}
}
}
public string addCourse(string student_id, string course_designation)
{
Student student = new Student(student_id);
student.getStudentInformation();
Course course = new Course(course_designation);
if (!course.GetCourseInformation(GLOBALS.current_semester))
{
return "This course is not offered this semester. Sorry!";
}
if (Registration.checkCoursePrereqNotTaken(student, course))
{
return "Pre requisite is not taken";
}
if (Registration.checkCourseTaken(student, course))
{
return "You already took this course!";
}
// check limit credit hours
int new_credit_hour = student.current_credit_hour + course.credit_hours;
if (new_credit_hour > student.max_credit_hour_allowed) { return "Maximum credit hours reached!"; }
// check course capacity
if (course.enrolled_student >= course.capacity ) { return "This course is full!"; }
// Update Registration Table
if (Registration.addRegistration(student, course))
{
student.updateCreditHour(new_credit_hour);
course.updateEnrolledStudent(course.enrolled_student + 1);
return "ok";
}
return "This course conflicts with your Registration. Please contact the admin for more information";
}
public static List<Student> getStudentsFromCourseCurrentSemester(string course_id)
{
List<Student> student_list = new List<Student>();
string query = "select * from registration where course_id=" + course_id +" and year_semester='" + GLOBALS.current_semester +"'";
DataTable registration_table = GLOBALS.db_query(query);
foreach (DataRow row in registration_table.Rows)
{
Student student = new Student(row["student_id"].ToString());
student.getStudentInformation();
student_list.Add(student);
}
return student_list;
}
public static bool addRegistration(Student student, Course course)
{
string query = "insert into REGISTRATION (course_id, student_id, year_semester)" +
"values (" + course.course_id + ", " + student.student_id + ", '" + GLOBALS.current_semester + "')";
return GLOBALS.db_command(query);
}
public static bool reportStudentRegistration(string student_id, string year_semester)
{
// check if student_id is valid
Student student = new Student(student_id);
if (student.getStudentInformation())
{
List<Course> course_list = Registration.getCoursesFromStudent(student_id, year_semester);
// print out the list of course here
List<string> lines = new List<string>();
lines.Add(String.Format("Report for student ID: {0}", student_id));
lines.Add(String.Format("Student's name: {0} {1}", student.first_name, student.last_name));
lines.Add("Semester: " + year_semester);
lines.Add("===============================" + Environment.NewLine);
foreach (var course in course_list)
{
lines.Add(course.course_designation);
lines.Add(course.title);
lines.Add("------------------------------" + Environment.NewLine);
}
//string file_name = AppDomain.CurrentDomain.BaseDirectory + String.Format("Report: Student ID {0}.txt", student_id);
string file_path = @".\..\..\Reports\Report_Student.txt";
System.IO.File.WriteAllLines(file_path, lines);
System.Diagnostics.Process.Start("notepad.exe", @".\..\..\Reports\Report_Student.txt");
return true;
}
return false;
}
