void LoadResults()
 {
     try
     {
         ClearAndFill(Results, Honglorn.GetResults(CurrentCourse, CurrentYear));
     }
     catch (Exception ex)
     {
         Console.WriteLine(ex);
     }
 }
 void LoadYears() => ClearAndFill(Years, Honglorn.YearsWithStudentData());
 void LoadCourseNames() => ClearAndFill(Courses, Honglorn.ValidCourseNames(CurrentYear));