C# DAL.SubmitChanges方法代码示例

        public static void DeleteReview(User user, string UserID, int ServiceID)
        {
            Review r = GetReview(UserID, ServiceID);

            if (!user.isSystemAdmin && !(user.UserID == UserID))
                throw new FaultException<SException>(new SException(),
                   new FaultReason("Invalid User, User Does Not Have Rights To Delete Review!"));
            //chk if user can do this anot

            DAL dalDataContext = new DAL();

            try
            {
                r = (from review in dalDataContext.reviews
                                 where review.UserID == UserID &&
                                 review.ServiceID == ServiceID
                                 select review).FirstOrDefault();

                dalDataContext.reviews.DeleteOnSubmit(r);
                dalDataContext.SubmitChanges();
            }
            catch
            {
                throw new FaultException<SException>(new SException(),
                   new FaultReason("An Error occured While Deleting Review, Please Try Again!"));
            }
        }

 public static void AddFieldAnswer(int FieldID, int ParticipantID, string Answer, DAL dalDataContext)
 {
     try
     {
         //Event evnt = EventController.GetEvent(EventID);
         //if(e == null)
         //    throw new FaultException<SException>(new SException(),
         //   new FaultReason("Invalid Event ID"));
         FieldAnswer fa = GetFieldAnswer(ParticipantID, FieldID);
         //DAL dalDataContext = new DAL();
         Table<FieldAnswer> fieldAnswers = dalDataContext.fieldAnswer;
         if (fa == null)
         {
             FieldAnswer CreateFieldAns = new FieldAnswer(ParticipantID, FieldID, Answer);
             fieldAnswers.InsertOnSubmit(CreateFieldAns);
             fieldAnswers.Context.SubmitChanges();
         }
         else
         {
             fa.Answer = Answer;
             dalDataContext.SubmitChanges();
         }
     }
     catch
     {
         throw new FaultException<SException>(new SException(),
            new FaultReason("An Error occured While Adding New Field Answer, Please Try Again!"));
     }
 }

        public static void DeleteProgram(User user, int ProgramID)
        {
            //chk if user got rights or is organizer

            Program P = GetPrograms(ProgramID);

            if (!user.isAuthorized(EventController.GetEvent(P.EventID), EnumFunctions.Delete_Programmes))
                throw new FaultException<SException>(new SException(),
                   new FaultReason("Invalid User, User Does Not Have Rights To Delete Programs!"));

            DAL dalDataContext = new DAL();
            try
            {
                Program matchedprograms = (from programs in dalDataContext.programs
                                           where programs.ProgramID == P.ProgramID
                                           select programs).FirstOrDefault();

                dalDataContext.programs.DeleteOnSubmit(matchedprograms);
                dalDataContext.SubmitChanges();
            }
            catch (Exception ex)
            {
                throw new FaultException<SException>(new SException(ex.Message),
                   new FaultReason("An Error occured While Adding Deleting Program, Please Try Again!"));
                //throw exception here
            }
        }

        //Delete the task
        public static void DeleteTask(User user, int TaskID, int eventID)
        {
            Task taskToDelete = GetTask(TaskID);
            //TODO: Put in after roles management for task up
            if (!user.isAuthorized(EventController.GetEvent(taskToDelete.EventID), EnumFunctions.Delete_Task))
                throw new FaultException<SException>(new SException(),
                   new FaultReason("Invalid User, User Does Not Have Rights To Delete Tasks!"));

            DAL dalDataContext = new DAL();

            try
            {
                Task matchedTask = (from tasks in dalDataContext.tasks
                                    where tasks.TaskID == taskToDelete.TaskID &&
                                    tasks.EventID == taskToDelete.EventID
                                    select tasks).FirstOrDefault();

                dalDataContext.tasks.DeleteOnSubmit(matchedTask);
                dalDataContext.SubmitChanges();
            }
            catch
            {
                throw new FaultException<SException>(new SException(),
                   new FaultReason("An Error occured While Deleting Guest, Please Try Again!"));
            }
        }

        public static void DeleteGuest(User user, int GuestID)
        {
            //chk if user can do this anot
            Guest g = GetGuest(GuestID);

            if (!user.isAuthorized(EventController.GetEvent(g.EventID), EnumFunctions.Delete_Guest))
                throw new FaultException<SException>(new SException(),
                   new FaultReason("Invalid User, User Does Not Have Rights To Delete Guest!"));

            DAL dalDataContext = new DAL();

            try
            {
                Guest matchedguest = (from guests in dalDataContext.guests
                                      where guests.GuestId == g.GuestId
                                      select guests).FirstOrDefault();

                dalDataContext.guests.DeleteOnSubmit(matchedguest);
                dalDataContext.SubmitChanges();
            }
            catch
            {
                throw new FaultException<SException>(new SException(),
                   new FaultReason("An Error occured While Deleting Guest, Please Try Again!"));
            }
        }

        public static void AddDefaultFeids(int EventID, DAL dalDataContext)
        {
            List<Field> ListField = new List<Field>();

            Field firstName = new Field();
            firstName.FieldName = firstName.FieldLabel = "First Name";
            Field lastName = new Field();
            lastName.FieldName = lastName.FieldLabel = "Last Name";
            firstName.IsRequired = lastName.IsRequired = true;
            Field email = new Field();
            email.FieldName = email.FieldLabel = "Email";
            email.IsRequired = email.IsRequired = true;

            ListField.Add(firstName);
            ListField.Add(lastName);
            ListField.Add(email);

            try
            {

                    for (int i = 0; i < ListField.Count; i++)
                    {
                        AddField(dalDataContext, EventID, ListField[i]);
                    }

                    dalDataContext.SubmitChanges();

            }
            catch (Exception ex)
            {
                throw new FaultException<SException>(new SException(),
                   new FaultReason("An Error occured While Adding New Field, Please Try Again!"));
            }
        }

        public static void deleteItem(User user, Items iten)
        {
            if (!user.isAuthorized( EventController.GetEvent(iten.EventID), EnumFunctions.Manage_Items))
                throw new FaultException<SException>(new SException(),
                   new FaultReason("Invalid User, User Does Not Have Rights To Delete Item!"));

            DAL dalDataContext = new DAL();

            try
            {
                Items matchedItem = (from item in dalDataContext.items
                                     where item.typeString == iten.typeString
                                     && item.EventID == iten.EventID
                                     && item.ItemName == iten.ItemName
                                     select item).FirstOrDefault<Items>();

                dalDataContext.items.DeleteOnSubmit(matchedItem);
                dalDataContext.SubmitChanges();
            }
            catch
            {
                throw new FaultException<SException>(new SException(),
                   new FaultReason("An Error occured While Deleting Item , Please Try Again!"));
            }
        }

        //if existing then return the existing otp
        public static string CreateNewRequestee(string targetEmail)
        {
            DAL dalDataContext = new DAL();
            try
            {

                Table<Requestee> requestees = dalDataContext.requestees;

                Requestee existingRequestee = (from requestee in dalDataContext.requestees
                                               where requestee.TargetEmail.ToLower() == targetEmail.ToLower()
                                                select requestee).SingleOrDefault<Requestee>();

                if (existingRequestee == null)
                {
                    string otp = OTPGenerator.Generate();

                    Requestee newRequestee = new Requestee(targetEmail,otp);
                    dalDataContext.requestees.DeleteOnSubmit(newRequestee);
                    dalDataContext.SubmitChanges();
                    return otp;
                }
                else
                {
                    return existingRequestee.Otp;
                }

            }
            catch (Exception ex)
            {
                throw new FaultException<SException>(new SException(ex.Message),
                    new FaultReason("An Error occured While Creating New Requestee: " + ex.Message));
            }
        }

        public static void AddService(User user, int EventID, string Address, string name, string url, string notes)
        {
            bool allow = false;
            if (user.isSystemAdmin || user.isEventOrganizer)
            {
                allow = true;
            }

            if (!allow)
            {
                if (!user.isAuthorized(EventController.GetEvent(EventID), EnumFunctions.Manage_Items))
                    throw new FaultException<SException>(new SException(),
                       new FaultReason("Invalid User, User Does Not Have Rights To Edit this Service!"));

            }

            try
            {
                DAL dalDataContext = new DAL();
                Table<Service> services = dalDataContext.services;

                Service creatingService = new Service(Address, name, url, notes);

                services.InsertOnSubmit(creatingService);
                services.Context.SubmitChanges();
                dalDataContext.SubmitChanges();
            }
            catch
            {
                throw new FaultException<SException>(new SException(),
                   new FaultReason("An Error occured While Adding New Service, Please Try Again!"));
            }
        }

        public static void CancelRequest(User user, int requestID)
        {
            Events evnt = EventController.GetEvent(GetRequest(requestID).EventID);
            if (!user.isAuthorized(evnt, EnumFunctions.Manage_Requests))
                throw new FaultException<SException>(new SException(),
                   new FaultReason("Invalid User, User Does Not Have Rights To Cancel Request!"));

            DAL dalDataContext = new DAL();

            Request request = (from requests in dalDataContext.requests
                               where requests.RequestID == requestID
                               select requests).FirstOrDefault();

            if (request == null)
            {
                throw new FaultException<SException>(new SException(),
                    new FaultReason("Invalid Request"));
            }
            else
            {
                Events e = EventController.GetEvent(request.EventID);

                if (e.Organizerid != user.UserID) // Manage Requests, View Requests User.isAuthorized(
                    throw new FaultException<SException>(new SException(),
                        new FaultReason("Invalid User, User Does Not Have Rights To Edit This Request!"));

                request.Status = RequestStatus.Cancelled;
                dalDataContext.SubmitChanges();

                RequestLogController.InsertRequestLog(request);
            }
        }

        public static void DeleteParticipant(User user, int ParticipantID)
        {
            try
            {
                DAL dalDataContext = new DAL();

                // Participant p = GetParticipant(ParticipantID);
                Participant p = (from participants in dalDataContext.participants
                                 where participants.ParticipantID == ParticipantID
                                 select participants).SingleOrDefault<Participant>();
                //chk if user can do this anot
                if (!user.isAuthorized(EventController.GetEvent(p.EventID), EnumFunctions.Manage_Participant))
                    goto Error;

                dalDataContext.participants.DeleteOnSubmit(p);
                dalDataContext.SubmitChanges();
            }
            catch
            {
                throw new FaultException<SException>(new SException(),
                   new FaultReason("An Error occured While Deleting Participant, Please Try Again!"));
            }

            return;

            Error:
            throw new FaultException<SException>(new SException(),
                       new FaultReason("Invalid User, User Does Not Have Rights To Delete Participant!"));
        }

        public static void DeleteAllParticipant(int EventID, DAL dalDataContext)
        {
            //chk if user can do this anot
            try
            {
                // Participant p = GetParticipant(ParticipantID);
                List<Participant> participants = (from participant in dalDataContext.participants
                                                  where participant.EventID == EventID
                                                  select participant).ToList<Participant>();

                for (int i = 0; i < participants.Count; i++)
                {
                    dalDataContext.participants.DeleteOnSubmit(participants[i]);
                }

                dalDataContext.SubmitChanges();
            }
            catch
            {
                throw new FaultException<SException>(new SException(),
                   new FaultReason("An Error occured While Clearing Participant, Please Try Again!"));
            }

            return;
        }

        public static void SetBought(User user, Items iten)
        {
            //if (!user.isAuthorized(user, EventController.GetEvent(iten.EventID), EnumFunctions.Manage_Items))
            //    throw new FaultException<SException>(new SException(),
            //       new FaultReason("Invalid User, User Does Not Have Rights To Update Items properties!"));
            try
            {
                DAL dalDataContext = new DAL();

                OptimizedBudgetItemsDetails matchedItem = (from item in dalDataContext.optimizedBudgetItemDetails
                                     where item.typeString == iten.typeString
                                     && item.EventID == iten.EventID
                                    && item.ItemName == iten.ItemName
                                     select item).FirstOrDefault<OptimizedBudgetItemsDetails>();

                if (matchedItem == null)
                {
                    throw new FaultException<SException>(new SException(),
                       new FaultReason("Invalid Item "));
                }
                else
                {
                    matchedItem.IsBought = true;
                    dalDataContext.SubmitChanges();
                }
            }
            catch
            {
                throw new FaultException<SException>(new SException(),
                   new FaultReason("An Error occured While Updating Item, Please Try Again!"));
            }
        }

        public static void DeleteEvent(User user, int EventID)
        {
            //chk if user can do this anot
            Events evnt = GetEvent(EventID);

            if (!user.isAuthorized(evnt))
                throw new FaultException<SException>(new SException(),
                   new FaultReason("Invalid User, User Does Not Have Rights To Delete this Events!"));

            DAL dalDataContext = new DAL();

            try
            {
                Events matchedevent = (from events in dalDataContext.events
                                       where events.EventID == evnt.EventID
                                       //events.Organizerid == user.userID
                                       select events).FirstOrDefault();

                dalDataContext.events.DeleteOnSubmit(matchedevent);
                dalDataContext.SubmitChanges();
            }
            catch
            {
                throw new FaultException<SException>(new SException(),
                   new FaultReason("An Error occured While Deleting Event, Please Try Again!"));
            }
        }

        private static void RemoveExistingBudget(int eventID)
        {
            DAL dalDataContext = new DAL();
            OptimizedBudgetItems matchedBudget = (from bgt in dalDataContext.optimizedBudgetItems
                                    where bgt.EventID == eventID
                                    orderby bgt.GeneratedDate descending
                                    select bgt).FirstOrDefault<OptimizedBudgetItems>();

            if (matchedBudget != null)
            {
                dalDataContext.optimizedBudgetItems.DeleteOnSubmit(matchedBudget);
                dalDataContext.SubmitChanges();
                //Child will automatically be deleted due to cascade from sql
            }
        }