public List<Admin> GetAllAdmins()
{
using (var context = new DB_ELearningEntities())
{
var list = context.Admins.ToList();
return list;
}
}
/// <summary>
/// Gets all assistants.
/// </summary>
/// <returns>list of assistants</returns>
public List<Assistant> GetAllAssistants()
{
using (var context = new DB_ELearningEntities())
{
var list = context.Assistants.ToList();
return list;
}
}
/// <summary>
/// Gets all students.
/// </summary>
/// <returns>List<Student>.</returns>
public List<Student> GetAllStudents()
{
using (var context = new DB_ELearningEntities())
{
var list = context.Students.ToList();
return list;
}
}
public List<Teacher> GetAllTeachers()
{
using (var context = new DB_ELearningEntities())
{
var list = context.Teachers.ToList();
return list;
}
}
public ActionResult Index()
{
ViewBag.Message = "Modify this template to jump-start your ASP.NET MVC application.";
var list = new DB_ELearningEntities().Admins;
if (list.ToList().Count > 0)
return View();
else return View();
}
public Teacher GetByID(int teacherID)
{
using (var context = new DB_ELearningEntities())
{
var prof = context.Teachers.Where(teacher => teacher.TeacherID == teacherID).First();
if (prof == null)
throw new Exception("No teacher with given ID found!");
else return prof;
}
}
public void CreateAdmin(string email)
{
using (var context = new DB_ELearningEntities())
{
var newAdmin = context.Admins.Create();
newAdmin.Email = email;
context.Admins.Attach(newAdmin);
context.SaveChanges();
}
}
public void EditTeacher(int teacherID, string firstName, string LastName, string email)
{
using (var context = new DB_ELearningEntities())
{
var prof = context.Teachers.Where(teacher => teacher.TeacherID == teacherID).First();
prof.FirstName = firstName;
prof.LastName = LastName;
prof.Email = email;
context.SaveChanges();
}
}
/// <summary>
/// Deletes the student.
/// </summary>
/// <param name="studentID">The student identifier.</param>
/// <exception cref="NullReferenceException">Student with this id not found!</exception>
public void DeleteStudent(int studentID)
{
using (var context = new DB_ELearningEntities())
{
var studentToDelete = context.Students.Where(student => student.StudentID == studentID).FirstOrDefault();
if (studentToDelete != null)
{
context.Students.Remove(studentToDelete);
context.SaveChanges();
}
else throw new NullReferenceException("Student with this id not found!");
}
}
public void CreateTeacher(string firstName, string LastName, string email)
{
using (var context = new DB_ELearningEntities())
{
var newTeacher = context.Teachers.Create();
newTeacher.FirstName = firstName;
newTeacher.LastName = LastName;
newTeacher.Email = email;
context.Teachers.Attach(newTeacher);
context.SaveChanges();
}
}
/// <summary>
/// Adds the assistant.
/// </summary>
/// <param name="firstName">The first name.</param>
/// <param name="lastName">The last name.</param>
/// <param name="email">The email.</param>
public void AddAssistant(string firstName, string lastName, string email)
{
using (var context = new DB_ELearningEntities())
{
var newAssistant = context.Assistants.Create();
newAssistant.Email = email;
newAssistant.FirstName = firstName;
newAssistant.LastName = lastName;
context.Assistants.Attach(newAssistant);
context.SaveChanges();
}
}
public void DeleteTeacher(int teacherID)
{
using (var context = new DB_ELearningEntities())
{
var prof = context.Teachers.Where(teacher => teacher.TeacherID == teacherID).First();
if (prof == null)
throw new Exception("Teacher with given ID not found!");
else
{
context.Teachers.Remove(prof);
context.SaveChanges();
}
}
}
/// <summary>
/// Blocks/Unblocks the student with the given student id.
/// </summary>
/// <param name="studentID">The student identifier.</param>
/// <exception cref="NullReferenceException">Student with this id not found!</exception>
public void ToggleBlock(int studentID)
{
using (var context = new DB_ELearningEntities())
{
var studentToBlock = context.Students.Where(student => student.StudentID == studentID).FirstOrDefault();
if (studentToBlock != null)
{
if (studentToBlock.isBlocked == null || studentToBlock.isBlocked == false)
studentToBlock.isBlocked = true;
else
studentToBlock.isBlocked = false;
context.SaveChanges();
}
else throw new NullReferenceException("Student with this id not found!");
}
}
/// <summary>
/// Edits the assistant.
/// </summary>
/// <param name="assistantID">The assistant identifier.</param>
/// <param name="firstName">The first name.</param>
/// <param name="lastName">The last name.</param>
/// <param name="email">The email.</param>
/// <exception cref="NullReferenceException">Assistant with this id not found!</exception>
public void EditAssistant(int assistantID, string firstName, string lastName, string email)
{
using (var context = new DB_ELearningEntities())
{
var assistantToEdit = context.Assistants.Where(assistant => assistant.AssistantID == assistantID).FirstOrDefault();
if (assistantToEdit != null)
{
assistantToEdit.Email = email;
assistantToEdit.FirstName = firstName;
assistantToEdit.LastName = lastName;
context.SaveChanges();
}
else throw new NullReferenceException("Assistant with this id not found!");
}
}
/// <summary>
/// Adds the student.
/// </summary>
/// <param name="userID">The user identifier.</param>
/// <param name="firstName">The first name.</param>
/// <param name="lastName">The last name.</param>
/// <param name="address">The address.</param>
/// <param name="email">The email.</param>
/// <param name="cardNO">The card number.</param>
public void AddStudent(int userID, string firstName, string lastName, string address, string email, string cardNO)
{
using (var context = new DB_ELearningEntities())
{
var newStudent = context.Students.Create();
newStudent.Address = address;
newStudent.CardNO = cardNO;
newStudent.Email = email;
newStudent.FirstName = firstName;
newStudent.isBlocked = false;
newStudent.LastName = lastName;
newStudent.UserID = userID;
context.Students.Attach(newStudent);
context.SaveChanges();
}
}
/// <summary>
/// Gets the assistant by identifier.
/// </summary>
/// <param name="assistantID">The assistant identifier.</param>
/// <returns>assistant with given id</returns>
/// <exception cref="Exception">Assistant with this id not found!</exception>
public Assistant GetAssistantById(int assistantID)
{
using (var context = new DB_ELearningEntities())
{
var assistantToGet = context.Assistants.Where(assistant => assistant.AssistantID == assistantID).FirstOrDefault();
if (assistantToGet != null)
return assistantToGet;
else throw new Exception("Assistant with this id not found!");
}
}
