/// <summary>
/// Saves information about student's results on specific question
/// </summary>
/// <param name="questionId">Question id</param>
/// <param name="isCorrect">Answer is correct</param>
public static void AddAttempt(int questionId, bool isCorrect)
{
var db = new Entities();
var question = db.Questions.FirstOrDefault(x => x.ID == questionId);
if (question == null) throw new Exception("Вопрос не найден");
question.TotalAttempts++;
if (isCorrect) question.RightAttempts++;
db.ObjectStateManager.ChangeObjectState(question, EntityState.Modified);
db.SaveChanges();
}
/// <summary>
/// Add test result to database
/// </summary>
/// <param name="result">Result instance</param>
public static void Add(Result result)
{
var db = new Entities();
db.Results.AddObject(result);
db.SaveChanges();
}