public void CalculateScore(ReportStudent student)
{
ItemWeightCollection subjectWeight = new ItemWeightCollection();
foreach (string each in Subjects)
{
if (student.Scores[SubjectToken].Contains(each))
{
subjectWeight.Add(each, student.Scores[SubjectToken].Weights[each]);
}
}
ItemWeightCollection domainWeight = new ItemWeightCollection();
foreach (string each in Domains)
{
if (student.Scores[DomainToken].Contains(each))
{
domainWeight.Add(each, student.Scores[DomainToken].Weights[each]);
}
}
if (subjectWeight.Count <= 0 && domainWeight.Count < 0)
{
return;
}
student.Scores[TargetToken].Clear();
student.Scores[TargetToken].Add("加權平均", 加權平均(student, subjectWeight, domainWeight), 0);
student.Scores[TargetToken].Add("加權總分", 加權總分(student, subjectWeight, domainWeight), 0);
student.Scores[TargetToken].Add("合計總分", 合計總分(student, subjectWeight, domainWeight), 0);
student.Scores[TargetToken].Add("算術平均", 算術平均(student, subjectWeight, domainWeight), 0);
}
private decimal 加權總分(ReportStudent student, ItemWeightCollection subjectWeight, ItemWeightCollection domainWeight)
{
decimal sum = 0;
foreach (string scoreItem in subjectWeight.Keys)
{
sum += (student.Scores[SubjectToken][scoreItem] * subjectWeight[scoreItem]);
}
foreach (string scoreItem in domainWeight.Keys)
{
sum += (student.Scores[DomainToken][scoreItem] * domainWeight[scoreItem]);
}
return(sum);
}
private decimal 算術平均(ReportStudent student, ItemWeightCollection subjectWeight, ItemWeightCollection domainWeight)
{
decimal sum = 0, weight = subjectWeight.Count + domainWeight.Count;
foreach (string scoreItem in subjectWeight.Keys)
{
sum += student.Scores[SubjectToken][scoreItem];
}
foreach (string scoreItem in domainWeight.Keys)
{
sum += student.Scores[DomainToken][scoreItem];
}
if (weight == 0)
{
return(0);
}
else
{
return(Round(sum / weight));
}
}
