protected void btnAdd_Click(object sender, EventArgs e)
{
name = txtName.Text;//to store the name
studentTpye = dpdStudentType.SelectedValue;
txtName.Text = ""; //to make the button empty when clicked
dpdStudentType.SelectedIndex = -1; //to make the studentType return to default
if (name != "" && studentTpye != "")
{
Student addStudent = null; //create a null variable
switch (studentTpye) // get student type
{
case "1":
addStudent = new Fulltime(name);
break;
case "2":
addStudent = new ParttimeStudent(name);
break;
case "3":
addStudent = new CoopStudent(name);
break;
}
//Student addStudent = new Student(name);
registeredStudent.Add(addStudent);
Session["students"] = registeredStudent; //store objects into session["students"]
}
if (registeredStudent.Count > 0)
{
warn.Attributes.Add("style", "display:none");
}
else
{
warn.Attributes.Remove("style");
}
}
protected void Main(object sender, EventArgs e)
{
studentCoursesLabel.Text = "";
alert1.Text = "";
if (!rfvStudent.IsValid)
{
return;
}
List <Course> selectedCourses = new List <Course>();
for (int i = 0; i < availableCourses.Count; i++)
{
Course course = availableCourses[i] as Course;
if (CheckBoxList1.Items[i].Selected)
{
Course selectedCourse = availableCourses[i];
selectedCourses.Add(selectedCourse);
weeklyHours += course.WeeklyHours;
}
}
if (selectedCourses.Count == 0)
{
alert1.Text = "Select at least 1 course";
return;
}
try
{
registeredStudents = (List <Student>)Session["students"];//make a new session for students
for (int i = 0; i < registeredStudents.Count; i++)
{
Student student = registeredStudents[i]; // index[i] is important
if (student.Id == drpStudent.SelectedValue)
{
if (drpStudent.SelectedItem.Text.Contains("Coop"))
{
CoopStudent coopStudent = (CoopStudent)student;//connect this student with CoopStudent class
coopStudent.RegisterCourses(selectedCourses);
registeredStudents[i] = coopStudent;
}
else if (drpStudent.SelectedItem.Text.Contains("Full"))
{
Fulltime fulltimeStudent = student as Fulltime;//casting to fulltime student
fulltimeStudent.RegisterCourses(selectedCourses);
registeredStudents[i] = fulltimeStudent;
}
else if (drpStudent.SelectedItem.Text.Contains("Part"))
{
ParttimeStudent parttimeStudent = (ParttimeStudent)student;
parttimeStudent.RegisterCourses(selectedCourses);
registeredStudents[i] = parttimeStudent;
}
Session["students"] = registeredStudents;
}
}
studentCoursesLabel.Text = string.Format("Selected student has registered {0} course(s), {1} hours weekly.", selectedCourses.Count, weeklyHours);
}
catch (Exception ex)
{
alert1.Text = ex.Message;
}
}