public ActionResult EditStudent(string id, string course, FormCollection collection)//---> gets course name, delete the row of it and add new row with changes from the faculty
{
DateTime now = DateTime.Now;
StudentsDal dal = new StudentsDal();
ExamsDal dalEx = new ExamsDal();
Students sd = dal.students.Find(id, course);
List <Exams> ex = (from x in dalEx.exams
where x.CourseId.Contains(sd.CourseName)
select x).ToList <Exams>();
foreach (Exams e in ex)
{
DateTime MoedADate = DateTime.Parse(e.MoedADate);
DateTime MoedBDate = DateTime.Parse(e.MoedBDate);
int resultA = DateTime.Compare(MoedADate, now.Date);
if (resultA > 0)
{
return(RedirectToAction("ErrorPageAddGrade"));
}
int resultB = DateTime.Compare(MoedBDate, now.Date);
if (resultB > 0)
{
return(RedirectToAction("ErrorPageAddGrade"));
}
}
dal.students.Remove(sd);
dal.SaveChanges();
Students stud = new Students()
{
FirstName = collection["FirstName"],
LastName = collection["LastName"],
Id = collection["Id"],
CourseName = collection["CourseName"],
GradeMoedA = collection["GradeMoedA"],
GradeMoedB = collection["GradeMoedB"],
FinalGrade = collection["FinalGrade"]
};
if (ModelState.IsValid)
{
try
{
(from s in dal.students
where s.Id == id
select s).ToList();
dal.students.Add(stud);
dal.SaveChanges();
}
catch (Exception)
{
TempData["error"] = "The course already exist!\n"; // print error message
return(View());
}
}
return(View("Home"));
}
public ActionResult EditExam(string id)//---> gets Exam Id and return all the info about it
{
ExamsDal dalE = new ExamsDal();
List <Exams> objExams = (from x in dalE.exams
where x.CourseId.Contains(id)
select x).ToList <Exams>();
Exams cvm = new Exams();
cvm = objExams[0];
return(View(cvm));
}
public ActionResult Exams()
{
/* check if user had logged in system */
if (Session["ID"] == null || Session["password"] == null || Session["type"] == null)
{
return(RedirectToAction("Login", "Login"));
}
/* check if user is student type */
else if (!Session["type"].Equals("Student"))
{
return(RedirectToAction("Home", Session["type"].ToString()));
}
/* get student Exams */
using (CourseParticipantsDal courseParticipantDb = new CourseParticipantsDal())
using (ExamsDal examsDb = new ExamsDal())
{
var id = Session["ID"].ToString();
/* get student course id for all his courses */
var courses =
(from row in courseParticipantDb.CourseParticipants
where row.ID.Equals(id)
select row.courseId).ToList();
/* get student Exams for all his courses sort by date and time */
var exams =
(from row in examsDb.Exams
where courses.Contains(row.courseId)
select row).OrderBy(x => x.date).ThenBy(y => y.startTime).ToList();
/* create Exam list model */
ExamList studentExams = new ExamList();
studentExams.exams = new List <Exam>();
foreach (Exam x in exams)
{
studentExams.exams.Add(x);
}
return(View(studentExams));
}
}
public ActionResult EditExam(string id, FormCollection collection)//---> gets exam id, delete the row of it and add new row with changes from the faculty
{
ExamsDal dal = new ExamsDal();
Exams ex = dal.exams.Find(id);
dal.exams.Remove(ex);
dal.SaveChanges();
Exams exam = new Exams()
{
CourseName = collection["CourseName"],
CourseId = collection["CourseId"],
MoedADate = collection["MoedADate"],
ClassA = collection["ClassA"],
HoursA = collection["HoursA"],
MoedBDate = collection["MoedBDate"],
ClassB = collection["ClassB"],
HoursB = collection["HoursB"]
};
if (ModelState.IsValid)
{
try
{
(from c in dal.exams
where c.CourseId == id
select c).ToList();
dal.exams.Add(exam);
dal.SaveChanges();
}
catch (Exception)
{
TempData["error"] = "The course already exist!\n"; // print error message
return(View());
}
}
return(View("Home"));
}
public ActionResult InsertGrade()
{
Grade grade = new Grade();
grade.courseId = Request["courseId"].ToString();
grade.courseName = Request["courseName"].ToString();
grade.moed = Request["moed"].ToString();
grade.grade = Int32.Parse(Request["grade"]);
grade.ID = Request["ID"].ToString();
var id = Session["ID"].ToString();
using (CoursesDal coursesDb = new CoursesDal())
using (ExamsDal exmaDb = new ExamsDal())
using (UsersDal usersDb = new UsersDal())
using (GradesDal gradesDb = new GradesDal())
using (CourseParticipantsDal courseParticipantDb = new CourseParticipantsDal())
{
/* check if lecturer passes this course */
var courseId = coursesDb.Courses.Where(Course => Course.courseId.Equals(grade.courseId) && Course.lecturer.Equals(id)).FirstOrDefault();
if (courseId == null)
{
TempData["msg"] = "Invalid course ID";
return(View("InsertGrades", grade));
}
/* check course name is the same in courses */
var courseName = coursesDb.Courses.Where(Course => Course.courseId.Equals(grade.courseId) && Course.courseName.Equals(grade.courseName) && Course.lecturer.Equals(id)).FirstOrDefault();
if (courseName == null)
{
TempData["msg"] = "Invalid course Name";
return(View("InsertGrades", grade));
}
/* check exam date has passed */
var exam =
(from row in exmaDb.Exams
where row.courseId.Equals(courseId.courseId) && row.moed.Equals(grade.moed)
select row).FirstOrDefault();
if (exam == null)
{
TempData["msg"] = "No such exam in system";
return(View("InsertGrades", grade));
}
if (DateTime.Compare(exam.date + exam.endTime, DateTime.Now) > 0)
{
TempData["msg"] = "Exam did not occur yet";
return(View("InsertGrades", grade));
}
/* check if student exist */
var student =
(from row in usersDb.Users
where row.ID.Equals(grade.ID)
select row).FirstOrDefault();
if (exam == null)
{
TempData["msg"] = "Student doesnt exist";
return(View("InsertGrades", grade));
}
/* check if student takes this course */
var studentTakesCourse =
(from row in courseParticipantDb.CourseParticipants
where row.ID.Equals(grade.ID) && row.courseId.Equals(grade.courseId)
select row).FirstOrDefault();
if (studentTakesCourse == null)
{
TempData["msg"] = "Student doesnt take this course";
return(View("InsertGrades", grade));
}
/* check if student has this course if true update else insert */
var gradeInDb =
(from row in gradesDb.Grades
where row.courseId.Equals(grade.courseId) && row.moed.Equals(grade.moed) && row.ID.Equals(grade.ID)
select row).FirstOrDefault();
if (gradeInDb != null)
{
gradeInDb.grade = grade.grade;
gradesDb.SaveChanges();
}
else
{
gradesDb.Grades.Add(grade);
gradesDb.SaveChanges();
}
}
TempData["goodMsg"] = "Inserted\\updated grade";
/* redirect with succsees message */
return(View("InsertGrades", new Grade()));
}
public ActionResult StudentsJson(int id)
{
return(Content(ExamsDal.StringJson(id)));
}
public ActionResult List(int id)
{
ViewBag.list = ExamsDal.List(id);
return(View());
}
/// <summary>
///
/// </summary>
/// <param name="eb"></param>
/// <returns></returns>
public ActionResult Addexams(ExamsBox eb)
{
return(Content(ExamsDal.Add(eb)));
}
public ActionResult SubmitExam(Exam exam)
{
if (ModelState.IsValid)
{
/* change or add exam */
using (CoursesDal coursesDb = new CoursesDal())
using (ExamsDal exmaDb = new ExamsDal())
using (CourseParticipantsDal courseParticipantDb = new CourseParticipantsDal())
{
/* check course exist */
var courseId = coursesDb.Courses.Where(Course => Course.courseId.Equals(exam.courseId)).FirstOrDefault();
if (courseId == null)
{
TempData["msg"] = "Invalid course ID";
return(View("ManageExams", exam));
}
/* check course name is the same in courses */
var courseName = coursesDb.Courses.Where(Course => Course.courseId.Equals(exam.courseId) && Course.courseName.Equals(exam.courseName)).FirstOrDefault();
if (courseName == null)
{
TempData["msg"] = "Invalid course Name";
return(View("ManageExams", exam));
}
/* check start time is before end time */
if (exam.startTime >= exam.endTime)
{
TempData["msg"] = "Exam end time must be bigger than Exam start time";
return(View("ManageExams", exam));
}
/* check date isnt in the past */
if (DateTime.Compare(exam.date + exam.startTime, DateTime.Now) < 0)
{
TempData["msg"] = "Exam cant be in the past";
return(View("ManageExams", exam));
}
/* get all exams with same class and check time doesnt clash */
var exams = (from row in exmaDb.Exams
where row.className.Equals(exam.className)
select row).ToList();
foreach (Exam x in exams)
{
if (x.startTime < exam.endTime && exam.startTime < x.endTime && x.date.Equals(exam.date))
{
TempData["msg"] = "Exam class clashes with other Exams";
return(View("ManageExams", exam));
}
}
/* check moed a is before b */
if (exam.moed == "A")
{
/* check if moed B exam exist */
var moedBExam =
(from row in exmaDb.Exams
where row.courseId.Equals(exam.courseId) && row.moed.Equals("B")
select row).FirstOrDefault();
if (moedBExam != null)
{
if (moedBExam.date <= exam.date)
{
TempData["msg"] = "Moed A needs to be before Moed B";
return(View("ManageExams", exam));
}
}
}
if (exam.moed == "B")
{
/* check if moed A exam exist */
var moedAExam =
(from row in exmaDb.Exams
where row.courseId.Equals(exam.courseId) && row.moed.Equals("A")
select row).FirstOrDefault();
if (moedAExam != null)
{
if (moedAExam.date >= exam.date)
{
TempData["msg"] = "Moed A needs to be before Moed B";
return(View("ManageExams", exam));
}
}
}
/* check if exam exist */
var examInDb =
(from row in exmaDb.Exams
where row.courseId.Equals(exam.courseId) && row.moed.Equals(exam.moed)
select row).FirstOrDefault();
/* if exam exsist update */
if (examInDb != null)
{
examInDb.courseId = exam.courseId;
examInDb.courseName = exam.courseName;
examInDb.moed = exam.moed;
examInDb.date = exam.date;
examInDb.startTime = exam.startTime;
examInDb.endTime = exam.endTime;
examInDb.className = exam.className;
exmaDb.SaveChanges();
}
/*else insert new exam */
else
{
exmaDb.Exams.Add(exam);
exmaDb.SaveChanges();
}
TempData["goodMsg"] = "Inserted\\updated exam";
/* redirect with succsees message */
return(View("ManageExams", new Exam()));
}
}
else
{
return(View("ManageExams", exam));
}
}
public ActionResult SubmitParticipant(CourseParticipant courseParticipant)
{
if (ModelState.IsValid)
{
/* add course to student */
var id = Session["ID"].ToString();
/* change or add grade */
using (CoursesDal coursesDb = new CoursesDal())
using (ExamsDal exmaDb = new ExamsDal())
using (UsersDal usersDb = new UsersDal())
using (GradesDal gradesDb = new GradesDal())
using (CourseParticipantsDal courseParticipantDb = new CourseParticipantsDal())
{
/* check course exist */
var courseId = coursesDb.Courses.Where(Course => Course.courseId.Equals(courseParticipant.courseId)).FirstOrDefault();
if (courseId == null)
{
TempData["msg"] = "Invalid course ID";
return(View("ManageCourseParticipants", courseParticipant));
}
/* check if student exist */
var student =
(from row in usersDb.Users
where row.ID.Equals(courseParticipant.ID) && row.type.Equals("Student")
select row).FirstOrDefault();
if (student == null)
{
TempData["msg"] = "Student doesnt exist";
return(View("ManageCourseParticipants", courseParticipant));
}
/* check if student takes this course */
var studentTakesCourse =
(from row in courseParticipantDb.CourseParticipants
where row.ID.Equals(courseParticipant.ID) && row.courseId.Equals(courseParticipant.courseId)
select row).FirstOrDefault();
if (studentTakesCourse != null)
{
TempData["msg"] = "Student takes this course";
return(View("ManageCourseParticipants", courseParticipant));
}
/* course time doesnt clashes with student courses */
var studentCourses =
(from row in courseParticipantDb.CourseParticipants
where row.ID.Equals(courseParticipant.ID)
select row.courseId).ToList();
var courses =
(from row in coursesDb.Courses
where studentCourses.Contains(row.courseId)
select row).ToList();
foreach (Course x in courses)
{
if (x.startTime < courseId.endTime && courseId.startTime < x.endTime && x.day.Equals(courseId.day))
{
TempData["msg"] = "Course time clashes with student schedule";
return(View("ManageCourseParticipants", courseParticipant));
}
}
/* add course to student */
courseParticipantDb.CourseParticipants.Add(courseParticipant);
courseParticipantDb.SaveChanges();
}
TempData["goodMsg"] = "Inserted\\updated grade";
/* redirect with succsees message */
return(View("ManageCourseParticipants", new CourseParticipant()));
}
else
{
return(View("ManageCourseParticipants", courseParticipant));
}
}
public ActionResult SubmitSchedule(Course course)
{
/* change course schedule */
if (ModelState.IsValid)
{
var id = Session["ID"].ToString();
/* change schedule grade */
using (CoursesDal coursesDb = new CoursesDal())
using (ExamsDal exmaDb = new ExamsDal())
using (UsersDal usersDb = new UsersDal())
using (GradesDal gradesDb = new GradesDal())
using (CourseParticipantsDal courseParticipantDb = new CourseParticipantsDal())
{
/* check if course exist */
var courseId = coursesDb.Courses.Where(Course => Course.courseId.Equals(course.courseId)).FirstOrDefault();
if (courseId != null)
{
/* check if name is for course id */
/* check course name is the same in courses */
var courseName = coursesDb.Courses.Where(Course => Course.courseId.Equals(course.courseId) && Course.courseName.Equals(course.courseName)).FirstOrDefault();
if (courseName == null)
{
TempData["msg"] = "Invalid course Name";
return(View("ManageCourseSchedule", course));
}
/* check lecturer exist */
var Lecturer =
(from row in usersDb.Users
where row.ID.Equals(course.lecturer) && row.type.Equals("Lecturer")
select row).FirstOrDefault();
if (Lecturer == null)
{
TempData["msg"] = "Lecturer doesnt exist";
return(View("ManageCourseSchedule", course));
}
/* check start time is before end time */
if (course.startTime >= course.endTime)
{
TempData["msg"] = "Course end time must be bigger than course start time";
return(View("ManageCourseSchedule", course));
}
/* new time doesnt clash with students and lecturer schedule */
/* find students that take the course */
var studentThatTakeCourse =
(from row in courseParticipantDb.CourseParticipants
where row.courseId.Equals(course.courseId)
select row.ID).ToList();
/* find all other courses students take */
var studentCourses =
(from row in courseParticipantDb.CourseParticipants
where studentThatTakeCourse.Contains(row.ID) && !row.courseId.Equals(course.courseId)
select row.courseId).ToList();
/* get courses schedule + lecturer courses schedule */
var courses =
(from row in coursesDb.Courses
where studentCourses.Contains(row.courseId) || row.lecturer.Equals(course.lecturer) && !row.courseId.Equals(course.courseId)
select row).ToList();
/* check no clashs between courses */
foreach (Course x in courses)
{
if (x.startTime < course.endTime && course.startTime < x.endTime && x.day.Equals(course.day))
{
TempData["msg"] = "Course time clashes with student or lecturer schedule";
return(View("ManageCourseSchedule", course));
}
}
/* get all course with same class and check time doesnt clash */
courses = (from row in coursesDb.Courses
where row.className.Equals(course.className) && !row.courseId.Equals(course.courseId)
select row).ToList();
foreach (Course x in courses)
{
if (x.startTime < course.endTime && course.startTime < x.endTime && x.day.Equals(course.day))
{
TempData["msg"] = "Course class clashes with other courses";
return(View("ManageCourseSchedule", course));
}
}
courseId.courseId = course.courseId;
courseId.courseName = course.courseName;
courseId.startTime = course.startTime;
courseId.endTime = course.endTime;
courseId.day = course.day;
courseId.className = course.className;
courseId.lecturer = course.lecturer;
coursesDb.SaveChanges();
TempData["goodMsg"] = "Inserted\\updated course";
/* redirect with succsees message */
return(View("ManageCourseSchedule", new Course()));
}
/* if course doesnt exist */
else
{
/* check lecturer exist */
var Lecturer =
(from row in usersDb.Users
where row.ID.Equals(course.lecturer) && row.type.Equals("Lecturer")
select row).FirstOrDefault();
if (Lecturer == null)
{
TempData["msg"] = "Lecturer doesnt exist";
return(View("ManageCourseSchedule", course));
}
/* check start time is before end time */
if (course.startTime >= course.endTime)
{
TempData["msg"] = "Course end time must be bigger than course start time";
return(View("ManageCourseSchedule", course));
}
/* new time doesnt clash with lecturers schedule */
/* get lecturer courses schedule */
var courses =
(from row in coursesDb.Courses
where row.lecturer.Equals(course.lecturer)
select row).ToList();
/* check no clashs between courses */
foreach (Course x in courses)
{
if (x.startTime < course.endTime && course.startTime < x.endTime && x.day.Equals(course.day))
{
TempData["msg"] = "Course time clashes with lecturer schedule";
return(View("ManageCourseSchedule", course));
}
}
/* get all course with same class and check time doesnt clash */
courses = (from row in coursesDb.Courses
where row.className.Equals(course.className)
select row).ToList();
foreach (Course x in courses)
{
if (x.startTime < course.endTime && course.startTime < x.endTime && x.day.Equals(course.day))
{
TempData["msg"] = "Course class clashes with other courses";
return(View("ManageCourseSchedule", course));
}
}
coursesDb.Courses.Add(course);
coursesDb.SaveChanges();
TempData["goodMsg"] = "Inserted\\updated course";
/* redirect with succsees message */
return(View("ManageCourseSchedule", new Course()));
}
}
}
else
{
return(View("ManageCourseSchedule", course));
}
}
/// <summary>
/// 修改学生成绩
/// </summary>
/// <param name="studentscore">类型 ExamsBox</param>
/// <returns>返回字符串，返回“1”则修改成功</returns>
public ActionResult Edit(ExamsBox studentscore)
{
return(Content(ExamsDal.Edit(studentscore)));
}
public ActionResult ShowStudents()//---> display table of all the courses in DB
{
DateTime now = DateTime.Now;
ExamsDal dalEx = new ExamsDal();
List <Students> sd = new List <Students>();
string mainconn = ConfigurationManager.ConnectionStrings["StudentsDal"].ConnectionString;
SqlConnection sqlconn = new SqlConnection(mainconn);
string sqlQuery = "select Students.FirstName, Students.LastName, Students.Id, Students.CourseName, Students.GradeMoedA, Students.GradeMoedB, Students.FinalGrade From Students";
SqlCommand sqlcomm = new SqlCommand(sqlQuery, sqlconn);
SqlDataAdapter sda = new SqlDataAdapter(sqlcomm);
DataTable dt = new DataTable();
sda.Fill(dt);
foreach (DataRow dr in dt.Rows)
{
Students std = new Students();
string courseId = dr["CourseName"].ToString();
std.FirstName = dr["FirstName"].ToString();
std.LastName = dr["LastName"].ToString();
std.Id = dr["Id"].ToString();
std.CourseName = dr["CourseName"].ToString();
List <Exams> ex = (from x in dalEx.exams
where x.CourseId.Contains(courseId)
select x).ToList <Exams>();
foreach (Exams e in ex)
{
DateTime MoedADate = DateTime.Parse(e.MoedADate);
DateTime MoedBDate = DateTime.Parse(e.MoedBDate);
int resultA = DateTime.Compare(MoedADate, now.Date);
if (resultA > 0)
{
std.GradeMoedA = "Has not yet been done";
}
else
{
std.GradeMoedA = dr["GradeMoedA"].ToString();
}
int resultB = DateTime.Compare(MoedBDate, now.Date);
if (resultB > 0)
{
std.GradeMoedB = "Has not yet been done";
}
else
{
std.GradeMoedB = dr["GradeMoedB"].ToString();
}
}
if (System.Convert.ToDecimal(dr["GradeMoedA"].ToString()) == -1 && System.Convert.ToDecimal(dr["GradeMoedB"].ToString()) == -1)
{
std.FinalGrade = "Has not yet been done";
}
else
{
if (System.Convert.ToDecimal(dr["GradeMoedA"].ToString()) > -1 && System.Convert.ToDecimal(dr["GradeMoedB"].ToString()) == -1)
{
std.FinalGrade = dr["GradeMoedA"].ToString();
}
else
{
std.FinalGrade = dr["GradeMoedB"].ToString();
}
}
//std.GradeMoedA = dr["GradeMoedA"].ToString();
//std.GradeMoedB = dr["GradeMoedB"].ToString();
//std.FinalGrade = dr["FinalGrade"].ToString();
sd.Add(std);
}
return(View(sd));
}
