private double avgQuestionbyGroup(StudentGroup sg, int questionid)
{
double avgquestionByGroup = 0;
double numOfParentsFeedback = 0;
foreach (Student s in sg.getStudents())
{
foreach (ParentsFeedBack pf in s.getParentFeedback())
{
foreach (Grade g in pf.getGrades())
{
if (g.getQuestion().getId() == questionid)
{
avgquestionByGroup += g.getValue();
numOfParentsFeedback++;
}
}
}
}
if (numOfParentsFeedback != 0)
{
double res = (avgquestionByGroup / numOfParentsFeedback);
return(Math.Round(res, 2));
}
else
{
return(0);
}
}
public void Fill_combo_box_Students()
{
List <String> namesStudents = new List <String>();
foreach (Student stud in s.getStudents())
{
namesStudents.Add(stud.getFullName());
}
comboBoxStudents.DataSource = namesStudents;
}