public bool Create(ExamDTO examDTO, Guid userId)
{
try
{
Exam exam = new Exam
{
Id = Guid.NewGuid(),
Password = RandomString(8),
OwnerId = userId,
Time = examDTO.Time,
Name = examDTO.Name,
BankId = examDTO.BankId,
StartTime = examDTO.StartTime,
EndTime = examDTO.EndTime,
Description = examDTO.Description
};
DbContext.Exams.Add(exam);
examDTO.QuestionId.ForEach(x => DbContext.ExamQuestions.Add(new ExamQuestion
{
QuestionId = x,
ExamId = exam.Id,
}));
DbContext.SaveChanges();
return(true);
}
catch (Exception)
{
return(false);
}
}
//创建一个用户
public bool CreateUser(string account, string password, string nikeName, string status)
{
var isUser = _onlineTestContext.User.Where(u => u.Account.Equals(account)).ToList();
string validataCode = System.Guid.NewGuid().ToString();
if (isUser.Count != 0)
{
return(false);
}
else
{
User user = new User()
{
Account = account,
Password = password,
NikeName = nikeName,
Status = status,
CreateTime = DateTime.Now,
VerificationCode = validataCode,
IsVerification = -1
};
_onlineTestContext.User.Add(user);
_onlineTestContext.SaveChanges();
return(SendEMail(account, validataCode));
}
}
public bool Create(QuestionBank newBank)
{
try
{
DbContext.QuestionBanks.Add(newBank);
DbContext.SaveChanges();
return(true);
}
catch (Exception)
{
return(false);
}
}
public bool Update(Question updatedQuestion)
{
try
{
DbContext.Questions.Update(updatedQuestion);
DbContext.SaveChanges();
return(true);
}
catch (Exception)
{
return(false);
}
}
public bool Create(Score score)
{
try
{
DbContext.Scores.Add(score);
DbContext.SaveChanges();
return(true);
}
catch (Exception e)
{
Console.WriteLine(e);
return(false);
}
}
public bool Create(List <Answer> newAnswers)
{
try
{
foreach (Answer answer in newAnswers)
{
DbContext.Answers.Add(answer);
}
DbContext.SaveChanges();
return(true);
}
catch (Exception)
{
return(false);
}
}
public T Edit <T>(T entity) where T : class
{
using (var context = new OnlineTestContext(_dbContextOptionBuilder.Options))
{
context.Entry(entity).State = EntityState.Modified;
context.SaveChanges();
return(entity);
}
}
public T Delete <T>(T entity) where T : class
{
using (var context = new OnlineTestContext(_dbContextOptionBuilder.Options))
{
DbSet <T> dbSet = context.Set <T>();
dbSet.Remove(entity);
context.SaveChanges();
return(entity);
}
}
private readonly int DefaultNum = 0; //默认数量
public bool CreateArticle(int uId, string title, string content, string label)
{
Article article = new Article()
{
UserId = uId,
Title = title,
Content = content,
CreateTime = DateTime.Now,
Label = label,
PraiseNum = DefaultNum, //赞
TrampleNum = DefaultNum, //踩
CommentNum = DefaultNum,
IsPublish = false,
IsDelete = false,
};
_onlineTestContext.Article.Add(article);
_onlineTestContext.SaveChanges();
return(true);
}
public bool EditAll <T>(List <T> entityList) where T : class
{
using (var context = new OnlineTestContext(_dbContextOptionBuilder.Options))
{
try
{
foreach (var entity in entityList)
{
context.Entry(entity).State = EntityState.Modified;
}
context.SaveChanges();
return(true);
}
catch (Exception ex)
{
return(false);
}
}
}
public bool Create(UserDTO userDTO)
{
try
{
User user = new User
{
Id = Guid.NewGuid(),
Username = userDTO.Username,
Password = userDTO.Password,
DateCreated = DateTime.Now
};
DbContext.Users.Add(user);
DbContext.SaveChanges();
return(true);
}
catch (Exception)
{
return(false);
}
}
public bool AddAll <T>(List <T> entityList) where T : class
{
using (var context = new OnlineTestContext(_dbContextOptionBuilder.Options))
{
try
{
DbSet <T> dbSet = context.Set <T>();
foreach (var entity in entityList)
{
dbSet.Add(entity);
}
context.SaveChanges();
return(true);
}
catch (Exception ex)
{
return(false);
}
}
}
private static readonly object locker = new object(); //锁
public bool CreateSubject(string name)
{
Subject subject = _onlineTestContext.Subject.SingleOrDefault(s => s.Name.Equals(name));
if (subject != null)
{
return(false);
}
else
{
Subject newSubject = new Subject()
{
Name = name,
QuestionCount = DefaultQueCount
};
_onlineTestContext.Subject.Add(newSubject);
_onlineTestContext.SaveChanges();
return(true);
}
}
