/// <summary>
/// Method for getting information about all sessions
/// </summary>
/// <param name="university">DBContext</param>
/// <param name="filepath">path to the file</param>
/// <param name="TypeOfOrder">how to sort</param>
/// <returns>group name and marks</returns>
public Dictionary <Session, Dictionary <string, List <float> > > GetSessionInformation(UniversityContext university, string filepath, string TypeOfOrder = "OrderBy")
{
Dictionary <Session, Dictionary <string, List <float> > > results = new Dictionary <Session, Dictionary <string, List <float> > >();
foreach (Session session_elem in university.Sessions)
{
Dictionary <string, List <float> > group_contains = new Dictionary <string, List <float> >();
var Grades = from grade in university.Grades
where grade.SessionID == session_elem.ID
select grade;
var students = from grd in Grades
select grd.StudentID;
var groups = from student in university.Students
where students.Contains(student.ID)
select student.GroupID;
groups = groups.Distinct();
var Groups = from grp in university.Groups
where groups.Contains(grp.ID)
select grp;
foreach (var t in Groups)
{
var student_count = from student in university.Students
where student.GroupID == t.ID
select student.ID;
var marks = from grd in Grades
where student_count.Contains(grd.StudentID)
select grd.Mark;
float mark_Aver = (marks.Sum() / marks.Count());
float mark_max = marks.Max();
float mark_min = marks.Min();
group_contains.Add(t.Name, new List <float>()
{
mark_max, mark_Aver, mark_min
});
}
results.Add(session_elem, group_contains);
}
SortingMethods methods = new SortingMethods();
return(methods.OrderList(results, TypeOfOrder));
}
/// <summary>
/// Method for getting information about one group session results
/// </summary>
/// <param name="university">DBContext</param>
/// <param name="sessionID">Session id</param>
/// <param name="filepath">path to the file</param>
/// <param name="sort">Sotring type</param>
/// <returns>group names and mark</returns>
public Dictionary <string, float> GetSessionForAGroupInformation(UniversityContext university, int sessionID, string filepath, string sort)
{
SortingMethods methods = new SortingMethods();
Dictionary <string, float> group_contains = new Dictionary <string, float>();
var Grades = from grade in university.Grades
where grade.SessionID == sessionID
select grade;
var Students = from grd in Grades
select grd.StudentID;
var groups = from student in university.Students
where Students.Contains(student.ID)
select student.GroupID;
groups = groups.Distinct();
var Groups = from grp in university.Groups
where groups.Contains(grp.ID)
select grp;
foreach (var t in Groups)
{
var student_count = from student in university.Students
where student.GroupID == t.ID
select student.ID;
var marks = from grd in Grades
where student_count.Contains(grd.StudentID)
select grd.Mark;
float mark = (marks.Sum() / marks.Count());
group_contains.Add(t.Name, mark);
}
return(methods.OrderList(group_contains, sort));
}
/// <summary>
/// Method for getting information about all D-Students
/// </summary>
/// <param name="university">DBContext</param>
/// <param name="filepath">path to the file</param>
/// <param name="TypeOfOrder">how to sort</param>
/// <returns>group name and students names</returns>
public Dictionary <string, List <string> > GetAllDStudents(UniversityContext university, string filepath, string TypeOfOrder = "OrderBy")
{
Dictionary <string, List <string> > group_allocated = new Dictionary <string, List <string> >();
var Grades = from grade in university.Grades
where grade.Mark < 4
select grade;
var students = from grd in Grades
select grd.StudentID;
var student_allocated = from student in university.Students
where students.Contains(student.ID)
select student;
student_allocated = student_allocated.Distinct();
var groups = from student in student_allocated
select student.GroupID;
var Groups = from grp in university.Groups
where groups.Contains(grp.ID)
select grp;
foreach (var t in Groups)
{
var student_count = from student in university.Students
where student.GroupID == t.ID
select student.LastName;
group_allocated.Add(t.Name, student_count.ToList());
}
SortingMethods methods = new SortingMethods();
return(methods.OrderList(group_allocated, TypeOfOrder));
}
