protected void Page_Load(object sender, EventArgs e)
{
if (Session["User"] != null && Session["Account"].ToString() == "Student")
{
/*
* check if the user session exist and Account session value is student
*/
/*
* instantiate classes when the page loads
*/
sectionList = new SectionList();
sectionStudentList = new SectionStudentList();
studentList = new StudentList();
taughtCoursesList = new TaughtCourseList();
courseList = new CourseList();
instructorList = new InstructorList();
string studentID = Session["User"].ToString(); //declare , get the id of the student from the session and assign it to variable
sectionStudentList.Filter("StudentID", studentID); // filter the section student list using the studentID
GenerateGridData(); //call GenerateGridData method to add data to the gridView
}
else if (Session["User"] != null && Session["Account"].ToString() != "Student")
{
/*
* else if the user session exist but the account session value is not student show error message
*/
Response.Write("Error You are not allowed to be here");
Response.End();
}
else
{
/*
* else show error message
*/
Response.Write("Error please log in before trying to Access this page..!");
Response.End();
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (Session["User"] != null && Session["Account"].ToString() == "Student")
{
/*
* check if the user session exist and Account session value is student
*/
/*
* instantiate classes when the page loads
*/
scheduleList = new ScheduleList();
SectionList = new SectionList();
SectionStudentList = new SectionStudentList();
taughtCoursesList = new TaughtCourseList();
courseList = new CourseList();
id = Session["User"].ToString(); //get the id of the student from the session and assign it to variable
SectionStudentList.Filter("StudentID", id); // filter the sectionstudentList usign the student id
GenerateGridView(); // call the GenerateGridView method to fill the gridView element with data
}
else if (Session["User"] != null && Session["Account"].ToString() != "Student")
{
/*
* else if the user session exist but the account session value is not student show error message
*/
Response.Write("Error You are not allowed to be here");
Response.End();
}
else
{
/*
* else show error message
*/
Response.Write("Error please log in before trying to Access this page..!");
Response.End();
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (Request.QueryString["cls"] == null)
{
/* check if there is no query string then */
Response.Write("Error No class requested"); // show error message
Response.End(); // stop page excution
}
else
{
sectionList = new SectionList(); // this is needed to check if the section id is valid so we instantiate it before the rest
sectionList.Filter("SectionID", Request.QueryString["cls"]); // filter the section with the section id to check if the section id exist
}
/*
* check if the user session exist and Account session value is Instructor and the sectionID is valid
*/
if (Session["User"] != null && Session["Account"].ToString() == "Instructor" && sectionList.List.Count != 0)
{
/*
* instantiate classes when the page loads
*/
sectionStudentList = new SectionStudentList();
studentList = new StudentList();
taughtCoursesList = new TaughtCourseList();
courseList = new CourseList();
sectionId = Request.QueryString["cls"]; // get the section id passed in the page url and assign it to secionId var
sectionList.Filter("SectionID", sectionId); // filter the sectionList with the sectionID
section = (Section)sectionList.List.ElementAt(0); // get the first element in the list and cast it to (Section)
taughtCoursesList.Filter("TaughtCourseID", section.TaughtCourseID); // filter the taughtCoursesList with the TaughtCourseID
taughtCourses = (TaughtCourse)taughtCoursesList.List.ElementAt(0); // get the first element in the list and cast it to (TaughtCourse)
course = new Course(); // create new Course object
course.setID(taughtCourses.CourseID.ToString()); // set the id of the course object to the value from the taughtCourse object
courseList.Populate(course); //populate object
sectionStudentList.Filter("SectionID", sectionId); //filter the sectionstudentList with sectionId
SectionIdLbl.Text = section.getID(); // set the sectionLable text to the section id
CourseID.Text = taughtCourses.CourseID; // set the courseid lable text to the course id
CourseName.Text = course.Title; // set courseName lable text to the course title
GenerateTable(); // call GenerateTable method to fill the grid view with data
}
else if (Session["User"] != null && Session["Account"].ToString() != "Instructor")
{
/*
* else if the user session exist but the account session value is not student show error message
*/
Response.Write("Error You are not allowed to be here"); // show error message
Response.End(); // stop page excution
}
else if (Session["User"] != null && Session["Account"].ToString() == "Instructor" && sectionList.List.Count == 0)
{
/* else if the user session exist and Account session value is Instructor and the sectionID is not valid */
Response.Write("Error Class not found"); // show error message
Response.End(); // stop page excution
}
else
{
/*
* else show error message
*/
Response.Write("Error please log in before trying to Access this page..!"); // show error message
Response.End(); // stop page excution
}
}
protected void EnrollMeBtn_Click(object sender, EventArgs e)
{
/*
* This method is called when enroll me button is clicked
*/
/*
* Declare variables and classes and instantiate them
*/
bool exist = false;
bool alreadyExist = false;
string scheduleID = "";
GridViewRow row = classListGrid.SelectedRow; // get the selected gidview row
string sectionId = row.Cells[2].Text.ToString(); // get the section id
string studentID = Session["User"].ToString(); // assign the student id from User session
Section section = new Section(sectionId);
sectionsList.Populate(section); // populate the section object
Student student = new Student(studentID);
studentList.Populate(student); // populate the student object
// get the total hours of the student
//int totalHours = scheduleList.TotalValue("Duration", "Section", "Schedule.SectionID", "Section.SectionID", "SectionStudent", "Section.SectionID", "SectionStudent.SectionID", "StudentID", student.getID());
//get the total hours of the student
//This line calls the new total value with the less parameters
int totalHours = scheduleList.TotalValue("Duration", "Section", "SectionID", "SectionID", "SectionStudent", "StudentID", student.getID());
int sectionTotalHours = scheduleList.TotalValue("Duration", "SectionID", sectionId); // get the total hours of the section per week
if (totalHours < 20) // check if the student registerd hours are less than 20 hours
{
if (totalHours + sectionTotalHours > 20)
{ /*
* if the section hours and student registerd hours are more than 20 hours then display error message in a popup
*
*/
ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "Error", "alert('You can't SignUP for more than 20 hours !')", true);
}
else
{
scheduleList.Filter("SectionID", section.getID()); // filter schedual list by the sectionId taken from the section object
foreach (Schedule schedule in scheduleList.List)
{
/* forEach element in the scheduleList */
// exist = scheduleList.Exist("Section", "Schedule.SectionID", "Section.SectionID", "SectionStudent", "Section.SectionID", "SectionStudent.SectionID", "Day", schedule.Day, "Time", schedule.Time, "StudentID", student.getID()); //check if the student has a class in that day and time -- //this is the 12 parameter method
exist = scheduleList.Exist("Section", "SectionID", "SectionID", "SectionStudent", "Day", schedule.Day, "Time", schedule.Time, "StudentID", student.getID()); //check if the student has a class in that day and time -- this is the less parameters method
scheduleID = schedule.getID(); // get the schedule id
while (Convert.ToInt32(schedule.Duration) > 1 && !exist)
{
/*
* while schedual duration more than 1 and the exit var is false
*/
int newTime = Convert.ToInt32(schedule.Time) + 1; // get the new time by the adding 1 to the schedule time
schedule.Time = newTime.ToString(); // assign the new time to the schedule object time
// exist = scheduleList.Exist("Section", "Schedule.SectionID", "Section.SectionID", "SectionStudent", "Section.SectionID", "SectionStudent.SectionID", "Day", schedule.Day, "Time", schedule.Time, "StudentID", student.getID()); //check if the student has a class in that day and time -- //this is the 12 parameter method
exist = scheduleList.Exist("Section", "SectionID", "SectionID", "SectionStudent", "Day", schedule.Day, "Time", schedule.Time, "StudentID", student.getID()); //check if the student has a class in that day and time -- this is the less parameters method
int duration = Convert.ToInt32(schedule.Duration) - 1; // decrease the duration by 1
schedule.Duration = duration.ToString(); // assign the new duration to the schedule object
}
if (exist)
{
/* if the exist var true make the alreadyExist var true */
alreadyExist = true;
}
}
if (alreadyExist)
{
/* if the alreadyExist var true display a message saying you already have class in that time in a popup */
ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "Error", "alert('You already have a class in that time !')", true);
}
else
{
/* else */
sectionStudentList.Filter("SectionID", sectionId); // filter sectionstudentList by section id
int total = sectionStudentList.List.Count; // get the count of the students that already registerd in the section
total = total + 1; // add one to the count
if (Convert.ToInt32(section.Capacity) >= total)
{
/* if the loccation capicty greater or equal to toatal var then add student to the section */
SectionStudent sectionStudent = new SectionStudent(sectionId, studentID); // create new sectionStudent object
SectionStudentList sectionStudentList = new SectionStudentList(); // create new sectionStudentList
sectionStudentList.Add(sectionStudent); // add the new object to the list
ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "Section Added", "alert('You have been Enrolled to this section !')", true); // show a message in a popup
}
else
{
/* else show a message that the section is already full */
ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "Error", "alert('The Section is Already Full !')", true);
}
}
}
}
else
{
/* else show a messagw that you can signup for more than 20h in a popup */
ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "Error", "alert('You can't SignUP for more than 20 hours !')", true);
}
}