private void ResetGrades()
{
ListColorConverter.Reset();
studentDetails.DataContext = null;
studentDetails.DataContext = SessionContext.CurrentGrades;
RefreshGradeVisibility();
}
private void FilterGrades(DateTime?startDate, DateTime?endDate, string subject)
{
if (SessionContext.CurrentGrades == null || SessionContext.CurrentGrades.Count == 0)
{
return;
}
if (!startDate.HasValue && !endDate.HasValue && subject == String.Empty)
{
ResetGrades();
}
else
{
List <LocalGrade> grades = null;
if (startDate.HasValue && subject != String.Empty)
{
// Both filters
grades = SessionContext.CurrentGrades.Where(g => g.AssessmentDate >= startDate && g.AssessmentDate < endDate && g.SubjectName == subject).ToList();
}
else if (startDate.HasValue && subject == String.Empty)
{
// Date only
grades = SessionContext.CurrentGrades.Where(g => g.AssessmentDate >= startDate && g.AssessmentDate < endDate).ToList();
}
else if (!startDate.HasValue && subject != String.Empty)
{
// subject only
grades = SessionContext.CurrentGrades.Where(g => g.SubjectName == subject).ToList();
}
if (grades != null)
{
ListColorConverter.Reset();
studentDetails.DataContext = grades;
RefreshGradeVisibility();
}
}
}