//public IEnumerable<CourseSemesterViewModel> CourseSemesters { get; set; }
 public OptimizationViewModel(Recommendation m)
 {
     ID = m.ID;
     Name = m.CreatedAt.ToString("M/d/yy h:mm tt") +((m.Name != null) ? " \"" + m.Name + "\"" : "");
     TimeStamp = m.CreatedAt;
     GaTechId = m.CreatedBy.UserName;
     MissingSeats = m.MissingSeats;
 }
        /// <summary>
        /// The writeResults class writes the Course Optimization run to the database.  The class takes in the optimization model, all students, all courses, 
        /// all semesters, all course/semster offerings, the dB context, the optimization variable (total slack for overbooked students across all course/
        /// semester offerings, and the RunName provided to the Optimization engine.  
        /// </summary>
        /// <param name="GRBModelData"></param>
        /// <param name="students"></param>
        /// <param name="courses"></param>
        /// <param name="sems"></param>
        /// <param name="crssems"></param>
        /// <param name="ctx"></param>
        /// <param name="ObjectiveValue"></param>
        /// <param name="RunName"></param>
        private static void writeResults(GRBVar[,,] GRBModelData, StudentPreference[] students, Course[] courses, Semester[] sems, CourseSemester[] crssems, ApplicationDbContext ctx, int ObjectiveValue, string RunName)
        {
            Recommendation rec = new Recommendation() { Name = RunName };
            rec.Records = new List<RecommendationRecord>();
            rec.StudentPreferences = students;
            rec.CourseSemesters = crssems;

            rec.MissingSeats = ObjectiveValue;
            for (int i = 0; i < students.Length; i++)
            {
                for (int j = 0; j < courses.Length; j++)
                {
                    for (int k = 0; k < sems.Length; k++)
                    {
                        try
                        {
                            if (GRBModelData[i, j, k].Get(GRB.DoubleAttr.X) == 1)
                                rec.Records.Add(new RecommendationRecord() { StudentPreference = students[i], CourseSemester = crssems.Single(m => m.Course == courses[j] && m.Semester == sems[k]) });
                        }
                        catch (GRBException e)
                        {
                        }
                    }
                }
            }
            ctx.Recommendations.Add(rec);
            ctx.SaveChanges();
        }