Sorting with Mathematical Formula with nHibernate (C#)

Question

public class Feedback
{
 public virtual int Id { get; private set; }    
 public virtual string ContentText { get; set; }
 public virtual DateTime FeedbackDate { get; set; }
 public virtual Student student { get; set; }
}

My Feedback Class.

public class Student
{
 public virtual int Id { get; private set; }    
 public virtual int NumberOfStars { get; set; }
 public virtual IList<Feedback> Feedbacks { get; private set; }

 public Student()
 {
  Feedback = new List<Feedbacks>();
 }
}

My Student Class

public class Course
{
 public virtual int Id { get; set; }
    // bla bla bla
 public virtual IList<Student> Students { get; private set; }

 public Course()
 {
  Students = new List<Student>();
 }

 public IList<Student> SortBy(string type)
 {
  // some other sorting
  else if (type.Equals("popular")){
   sortedStudents = session.CreateCriteria(typeof(Student))
    .CreateAlias("Student", "s")
    .CreateAlias("s.Feedback", "f")
    .AddOrder(Order.Desc( -------- ))
    .List();
  }

  return (IList<Student>) sortedStudents;
 }

}

My Course class

I want sort students in a Course with method SortBy : if type is x i will sort with following rule (Students.Feedback.Count)*5 + Student.NumberOfStars)

How ?

Answer 1

Query with LINQ

IList sortedStudents = (from student in this.Students
                        where student.Course == this
                        orderby (student.Feedbacks.Count*3 + student.NumberOfStars)
                        select student).ToList();