public IEnumerable <ViewQuestionExam> Filter(ViewQuestionExam fillterModel)
{
try
{
var result = (from e in context.Questions
join c in context.Categorys on e.Category.Id equals c.Id
select new
{
Id = e.Id,
CategoryName = c.Name,
Content = e.Content,
Level = e.Level,
Suggestion = e.Suggestion,
Type = e.Type,
Media = e.Media,
Status = e.Status,
CreateBy = e.CreatedBy,
CreateDate = e.CreatedDate
}).ToList();
if (fillterModel.Level != null && !"".Equals(fillterModel.Level))
{
result = result.Where(s => s.Level.Equals(fillterModel.Level)).ToList();
}
if (fillterModel.Type != null && !"".Equals(fillterModel.Type))
{
result = result.Where(s => s.Type.Equals(fillterModel.Type)).ToList();
}
if (fillterModel.CreatedBy != null && !"".Equals(fillterModel.CreatedBy))
{
result = result.Where(s => s.CreateBy.Equals(fillterModel.CreatedBy)).ToList();
}
if (fillterModel.CategoryName != null && !"".Equals(fillterModel.CategoryName))
{
result = result.Where(s => s.CategoryName.Equals(fillterModel.CategoryName)).ToList();
}
List <ViewQuestionExam> list = new List <ViewQuestionExam>();
foreach (var item in result)
{
ViewQuestionExam Question = new ViewQuestionExam();
Question.QuesId = item.Id;
Question.CategoryName = item.CategoryName;
Question.Content = item.Content;
Question.Level = item.Level;
Question.Suggestion = item.Suggestion;
Question.Type = item.Type;
Question.Status = item.Status;
Question.CreatedBy = item.CreateBy;
Question.CreatedDate = item.CreateDate;
list.Add(Question);
}
return(list);
}
catch (Exception e)
{
return(GetAll());
}
}
public int RandomQuestion(ViewQuestionExam model)
{
List <ExamQuestion> list = new List <ExamQuestion>();
var questions = context.Questions.ToList();
var examquestion = context.ExamQuestions.Where(ex => ex.ExamId == model.ExamId).ToList();
foreach (var item in examquestion)
{
questions.Remove(questions.SingleOrDefault(s => s.Id == item.QuestionId));
}
ExamQuestion ExamQues;
foreach (var item in questions)
{
ExamQues = new ExamQuestion();
ExamQues.QuestionId = item.Id;
ExamQues.ExamId = model.ExamId;
list.Add(ExamQues);
}
if (model.Total > list.Count)
{
model.Total = list.Count;
}
Random random;
int count = questions.Count;
for (int i = 0; i < model.Total; i++)
{
random = new Random();
count--;
int randomnumber = random.Next(0, count);
context.ExamQuestions.Add(list.ElementAt(randomnumber));
list.Remove(list.ElementAt(randomnumber));
}
return(context.SaveChanges());
}
public IEnumerable <ViewQuestionExam> GetListQuestionById(int id)
{
var result = (from e in context.ExamQuestions
join q in context.Questions on e.QuestionId equals q.Id
join ex in context.Exams on e.ExamId equals ex.Id
join c in context.Categorys on q.Category.Id equals c.Id
where e.ExamId == id
select new
{
Id = e.QuestionId,
NameExam = ex.NameExam,
Content = q.Content,
Level = q.Level,
Suggestion = q.Suggestion,
Type = q.Type,
Media = q.Media,
Status = q.Status,
CreateBy = q.CreatedBy,
CreateDate = q.CreatedDate,
CategoryName = c.Name,
Space = ex.SpaceQuestionNumber
}).ToList();
List <ViewQuestionExam> list = new List <ViewQuestionExam>();
foreach (var item in result)
{
ViewQuestionExam ExamQuestion = new ViewQuestionExam();
ExamQuestion.QuesId = item.Id;
ExamQuestion.nameExam = item.NameExam;
ExamQuestion.Content = item.Content;
ExamQuestion.Level = item.Level;
ExamQuestion.Suggestion = item.Suggestion;
ExamQuestion.Type = item.Type;
ExamQuestion.Status = item.Status;
ExamQuestion.CreatedBy = item.CreateBy;
ExamQuestion.CreatedDate = item.CreateDate;
ExamQuestion.CategoryName = item.CategoryName;
ExamQuestion.Space = item.Space;
list.Add(ExamQuestion);
}
return(list);
}
//getall
public IEnumerable <ViewQuestionExam> GetById(int id)
{
var examquestion = context.ExamQuestions.Where(e => e.ExamId == id).ToList();
//var questions = context.Questions.ToList();
var questions = (from e in context.Questions
join c in context.Categorys on e.Category.Id equals c.Id
select new
{
Id = e.Id,
CategoryName = c.Name,
Content = e.Content,
Level = e.Level,
Suggestion = e.Suggestion,
Type = e.Type,
Media = e.Media,
Status = e.Status,
CreateBy = e.CreatedBy,
CreateDate = e.CreatedDate
}).ToList();
List <ViewQuestionExam> list = new List <ViewQuestionExam>();
foreach (var itemExamQuestion in examquestion)
{
questions.Remove(questions.SingleOrDefault(s => s.Id == itemExamQuestion.QuestionId));
}
foreach (var item in questions)
{
ViewQuestionExam Question = new ViewQuestionExam();
Question.QuesId = item.Id;
Question.CategoryName = item.CategoryName;
Question.Content = item.Content;
Question.Level = item.Level;
Question.Suggestion = item.Suggestion;
Question.Type = item.Type;
Question.Status = item.Status;
Question.CreatedBy = item.CreateBy;
Question.CreatedDate = item.CreateDate;
list.Add(Question);
}
return(list);
}
public IEnumerable <ViewQuestionExam> GetAll()
{
var result = (from e in context.Questions
join c in context.Categorys on e.Category.Id equals c.Id
where !(from q in context.ExamQuestions select q.QuestionId).ToList().Contains(e.Id)
select new
{
Id = e.Id,
CategoryName = c.Name,
Content = e.Content,
Level = e.Level,
Suggestion = e.Suggestion,
Type = e.Type,
Media = e.Media,
Status = e.Status,
CreateBy = e.CreatedBy,
CreateDate = e.CreatedDate
}).ToList();
List <ViewQuestionExam> list = new List <ViewQuestionExam>();
foreach (var item in result)
{
ViewQuestionExam Question = new ViewQuestionExam();
Question.QuesId = item.Id;
Question.CategoryName = item.CategoryName;
Question.Content = item.Content;
Question.Level = item.Level;
Question.Suggestion = item.Suggestion;
Question.Type = item.Type;
Question.Status = item.Status;
Question.CreatedBy = item.CreateBy;
Question.CreatedDate = item.CreateDate;
list.Add(Question);
}
return(list);
}
public IEnumerable <ViewQuestionExam> Filter(ViewQuestionExam filterModel)
{
return(repository.Filter(filterModel));
}
public int RandomQuestion(ViewQuestionExam model)
{
return(repository.RandomQuestion(model));
}
public int RandomQuestion(ViewQuestionExam model)
{
List <ExamQuestion> list = new List <ExamQuestion>();
var exam = context.Exams.Where(ex => ex.Id == model.ExamId).SingleOrDefault();
var questions = context.Questions.Where(e => e.Category.Name == model.CategoryName && e.Level == model.Type).ToList();
var examquestion = context.ExamQuestions.Where(ex => ex.ExamId == model.ExamId).ToList();
foreach (var item in examquestion)
{
questions.Remove(questions.SingleOrDefault(s => s.Id == item.QuestionId));
}
ExamQuestion ExamQues;
foreach (var item in questions)
{
ExamQues = new ExamQuestion();
ExamQues.QuestionId = item.Id;
ExamQues.ExamId = model.ExamId;
list.Add(ExamQues);
}
if (model.Total >= list.Count)
{
model.Total = list.Count;
}
Random random;
int count = questions.Count;
int checkSpace = exam.SpaceQuestionNumber - examquestion.Count;
if (checkSpace < model.Total)
{
for (int i = 0; i < checkSpace; i++)
{
random = new Random();
count--;
int randomnumber = random.Next(0, count);
var currentQuestion = context.Questions.Find(list.ElementAt(randomnumber).QuestionId);
currentQuestion.Status = -3;
context.Entry(currentQuestion).State = EntityState.Modified;
//context.SaveChanges();
context.ExamQuestions.Add(list.ElementAt(randomnumber));
list.Remove(list.ElementAt(randomnumber));
}
}
else
{
for (int i = 0; i < model.Total; i++)
{
random = new Random();
count--;
int randomnumber = random.Next(0, count);
var currentQuestion = context.Questions.Find(list.ElementAt(randomnumber).QuestionId);
currentQuestion.Status = -3;
context.Entry(currentQuestion).State = EntityState.Modified;
//context.SaveChanges();
context.ExamQuestions.Add(list.ElementAt(randomnumber));
list.Remove(list.ElementAt(randomnumber));
}
}
return(context.SaveChanges());
}
public IEnumerable <ViewQuestionExam> Search(string searchString)
{
try
{
if (!string.IsNullOrEmpty(searchString))
{
var result = (from e in context.Questions
join c in context.Categorys on e.Category.Id equals c.Id
where e.Content.Contains(searchString)
select new
{
Id = e.Id,
CategoryName = c.Name,
Content = e.Content,
Level = e.Level,
Suggestion = e.Suggestion,
Type = e.Type,
Media = e.Media,
Status = e.Status,
CreateBy = e.CreatedBy,
CreateDate = e.CreatedDate
}).ToList();
List <ViewQuestionExam> list = new List <ViewQuestionExam>();
foreach (var item in result)
{
ViewQuestionExam Question = new ViewQuestionExam();
Question.QuesId = item.Id;
Question.CategoryName = item.CategoryName;
Question.Content = item.Content;
Question.Level = item.Level;
Question.Suggestion = item.Suggestion;
Question.Type = item.Type;
Question.Status = item.Status;
Question.CreatedBy = item.CreateBy;
Question.CreatedDate = item.CreateDate;
list.Add(Question);
}
return(list);
}
var questions = (from e in context.Questions
join c in context.Categorys on e.Category.Id equals c.Id
select new
{
Id = e.Id,
CategoryName = c.Name,
Content = e.Content,
Level = e.Level,
Suggestion = e.Suggestion,
Type = e.Type,
Media = e.Media,
Status = e.Status,
CreateBy = e.CreatedBy,
CreateDate = e.CreatedDate
}).ToList();
List <ViewQuestionExam> listQuestion = new List <ViewQuestionExam>();
foreach (var item in questions)
{
ViewQuestionExam Question = new ViewQuestionExam();
Question.QuesId = item.Id;
Question.CategoryName = item.CategoryName;
Question.Content = item.Content;
Question.Level = item.Level;
Question.Suggestion = item.Suggestion;
Question.Type = item.Type;
Question.Status = item.Status;
Question.CreatedBy = item.CreateBy;
Question.CreatedDate = item.CreateDate;
listQuestion.Add(Question);
}
return(listQuestion);
}
catch (Exception e)
{
return(GetAll());
}
}
