Styjun

I find myself unable to implement critical sections of my code for a project. The assignment is to develop the backend a text-based gradebook. I have a method, addStudent, which is supposed to add a student to a list in a section, also contained in a list.

I have a method in the Gradebook class, addStudent, which is supposed to add a student object to a list contained within the current Section object. The sections are also contained in a list. I have tried all sorts of combinations, but I can't seem to find the magic words that actually let me accomplish this.

The file is defined in 5 files/classes; Assignment(can be ignored for now), Student, Section, Gradebook, Program (also can ignore, only used for front end (input to pass to mehtods, etc.)).

Here is the method I need to implement, contained in the Gradebook class.

public bool addStudent(string firstName, string lastName, string username, long phoneNumber)
 

 return false; //FIXME
 

Here is the Section Class:

class Section
 
 string sectionName;
 //probably more properties need to be implemented, or at least would make life simpler
 public Section(string sectionName)
 
 this.sectionName = sectionName;
 List<Student> students = new List<Student>();
 List<Assignment> assignments = new List<Assignment>();
 
 

Here is the Student Class:

class Student
 {
 string firstName = null;
 string lastName = null;
 long studentID = 0;
 long phoneNumber = 0;
 int absentcount = 0;
 int tardyCount = 0;
 double gradePercent = 0;
 //need to add more properties, read through Gradebook API for more

 public Student(string firstName, string lastName, long studentID, long phoneNumber)
 
 this.firstName = firstName;
 this.lastName = lastName;
 this.studentID = studentID;
 this.phoneNumber = phoneNumber;
 List<Assignment> studentAssignments = new List<Assignment>();
 

I am aware of the duplicate assignment definitions, I am keeping both in for now, likely for redundancy, though this might not be a great idea, in which case I will only keep the student version.

I expect to be able to just add some longer line referencing each object in the respective lists, but I always come up with an error, either that I need to make the fields read only, or that the object doesn't exist. The only solution I can think of would be to keep an index for the last modified element in the list, but I'd rather not do that.

I would logically think to do something like this (I know this is wrong): currentSection.Student.Add(Student(firstName, lastName, username, phoneNumber)). I know this can't be though, because I need to refernce the list element, not the class itself.

I also may just be overthinking this quite a bit but any help would be appreciated.

You should make your List<Student> students accessible from outside your Session constructor

Change your Section declaration to:

class Section

 string sectionName;
 public List<Student> students;

 //probably more properties need to be implemented, or at least would make life simpler
 public Section(string sectionName)
 
 this.sectionName = sectionName;
 students = new List<Student>();
 List<Assignment> assignments = new List<Assignment>();
 

Add the student to your list with

currentSection.students.Add(new Student(firstName, lastName, username, phoneNumber));