public GradingScheme Create()
{
GradingScheme scheme = new GradingScheme();
Update(scheme);
return(scheme);
}
public GradingSchemeListDTO(GradingScheme gradingScheme)
{
if (gradingScheme != null)
{
Id = gradingScheme.Id;
Name = gradingScheme.Name;
}
}
private void Update(GradingScheme scheme)
{
scheme.Name = Name;
foreach (GradeDTO gradeDTO in Grades)
{
scheme.Grades.Add(gradeDTO.Create());
}
}
public GradingSchemeDetailDTO(GradingScheme gradingScheme) : base(gradingScheme)
{
if (gradingScheme != null)
{
Grades = new HashSet <GradeDTO>();
foreach (Grade grade in gradingScheme.Grades)
{
Grades.Add(new GradeDTO(grade));
}
}
}
public string GetGrade(Student student)
{
if (student == null || Assignments == null || GradingScheme == null ||
GradingScheme.Grades == null || GradingScheme.Grades.Count == 0)
{
return(null);
}
double percentage = GetPercentage(student);
if (percentage < 0 || percentage > 1)
{
return(null);
}
return(GradingScheme.GetGrade(percentage));
}
public string GetGrade(Student student)
{
if (student == null)
{
return(null);
}
double score = GetScore(student);
double maxScore = GetMaxScore();
GradingScheme scheme = Course.GradingScheme;
if (maxScore <= 0 || scheme == null || scheme.Grades == null || scheme.Grades.Count == 0)
{
return(null);
}
double percentage = score / maxScore;
if (percentage < 0 || percentage > 1)
{
return(null);
}
return(scheme.GetGrade(percentage));
}
