//Polymorphic
public override void CreateStudent(Student st)
{
try
{
var check = from s in db.Students
where s.Username == st.Username
select s;
if (check.Count() == 0)
{
db.Students.Add(st);
db.SaveChanges();
}
else
{
throw new Exception("Username is already in use, please select another");
}
}
catch (Exception ex)
{
throw new Exception("New student was not created" + ": " + ex.Message);
}
}
public void Insert(Registration entity)
{
_dbContext.Add(entity);
_dbContext.SaveChanges();
}
