public List <int> QuestionSelect(List <int> questionIds, int count, int lessonId, DifficultyType difficulty) { int tableCount = _context.GetTableCount(s => s.LessonId == lessonId && s.Difficulty == difficulty); if (tableCount < count) { _context.GetList(s => s.LessonId == lessonId && s.Difficulty == difficulty).Select(s => s.Id).ToList().ForEach(questionIds.Add); questionIds.Add(-1); return(questionIds); } var randomNumberGenerator = new Random(); List <int> skipValues = new List <int>(); for (int i = 0; i < count; i++) { int randomValue = randomNumberGenerator.Next(tableCount); repeat : if (skipValues.Any(s => s == randomValue)) { randomValue = randomNumberGenerator.Next(tableCount); goto repeat; } skipValues.Add(randomValue); questionIds.Add(_context.Get(s => s.LessonId == lessonId && s.Difficulty == difficulty, randomValue).Id); } return(questionIds); }
public string[,] LessonSelector() { List <Lesson> lessons = _lessonRep.GetList(); string[,] turnArray = new string[lessons.Count, 2]; int iterator = 0; foreach (var lesson in lessons) { turnArray[iterator, 0] = lesson.Id.ToString(); turnArray[iterator, 1] = lesson.LessonName; iterator++; } return(turnArray); }
public void ListEntityWithTable(Expression <Func <Exam, bool> > filter = null) { _view.ShowTable(ListToTable(Context.GetList(filter))); }