private List <int> GetClassGrades(int subjectClassId, int studentId = 0)
{
List <int> gradesList = new List <int>();
foreach (var grade in _gradesData.RetrieveObjects())
{
if (studentId == 0)
{
if (grade.ClassId == subjectClassId)
{
gradesList.Add(grade.StudentGrade);
}
}
else
{
if (grade.ClassId == subjectClassId && grade.StudentId == studentId)
{
gradesList.Add(grade.StudentGrade);
}
}
}
return(gradesList.Distinct().ToList());
}
public int GetClassSubjectById(string name)
{
var subjectId = _subjectsData.RetrieveObjects().Find(x => x.Name == name);
return(subjectId.Id);
}
public int GetStudentId(string name)
{
var studentId = _studentsData.RetrieveObjects().Find(x => x.Name == name);
return(studentId.Id);
}