//Initialises the Student database by reading the config file for data file paths and constructing it.
private void initDatabase()
{
StreamReader f = new StreamReader("config.txt");
string subjectPath = f.ReadLine();
string studentPath = f.ReadLine();
f.Close();
this.studentDatabase = new SubjectRollDatabase(studentPath, subjectPath);
}
//Constructor
internal Attender(GridViewForm studentGrid, List<Subject> subjects, SubjectRollDatabase database)
{
InitializeComponent();
this.attendees = new List<Student>();
this.Text = "Exam Attender";
initScanners(SerialPort.GetPortNames());
this.studentGrid = studentGrid;
this.ui = UIBuilder.buildUI<ExamAttenderUI>(this);
this.studentGrid.Show();
this.students = retrieveAllStudents(subjects, database);
ui.lookupBtn.Enabled = true;
ui.updateSearchBox<Student>(students);
ui.searchBox.TextChanged += checkButtonValidity;
ui.searchBox.KeyDown += searchBoxEnterDown;
ui.lookupBtn.Click += lookupBtnClicked;
ui.recordBtn.Click += recordBtnClicked;
ui.finaliseBtn.Click += finalise;
ui.recordBtn.Enabled = false;
displaySubjects(subjects);
}
//Retreves all students from the database based on the subjects chosen. Remvoes Duplicates.
private List<Student> retrieveAllStudents(List<Subject> subjects, SubjectRollDatabase database)
{
List<Student> allStudents = new List<Student>();
for (int i = 0; i < subjects.Count; i++)
allStudents.AddRange(database.getStudents(subjects[i]));
return allStudents.Distinct().ToList();
}