发布到Azure数据库时重复

Question

代码库当前以天蓝色添加症状反馈评分。一旦添加了一个“症状”并为其添加了分数，一切都将正常工作，第二个“症状”条目也将正常运行，一旦我添加了一个第三“症状”并为此评分，则在数据库中将FIRST分数添加两次我添加了第四个“症状”，第一个分数被添加了3次，其余的重复不断。有办法阻止这种情况吗？

public AddSymptom(Symptoms symptom, bool isFeedback)
    {
        InitializeComponent();
        manager = SymptomsManager.DefaultManager; //intiialise the Azure Symptom class 
        weathermanager = WeatherManager.DefaultManager;
        remedymanager = RemedyManager.DefaultManager;
        imagemanager = ImagesManager.DefaultManager;
        usersymptommanager = UserSymptomManager.DefaultManager;
        //RemedyPicker.SelectedIndexChanged += RemedyPicker_SelectedIndexChanged;
        symptomfeedbackmanager = SymptomFeedbackManager.DefaultManager;


        GetCorrectiveActions();

        Device.BeginInvokeOnMainThread(action: async () =>
        {
            Uri ImgSource = await App.GetImage("sym");
            img.Source = ImgSource;
        });

        GetUserSymptoms();

        if (isFeedback == true)
        {
            this.Title = "Enter Symptom Feedback";
            lblTitle.Text = "Enter Symptom Feedback";
            lblSubtutle.Text = "Please enter your feedback";
            //SymptomLabel.IsVisible = false;
            //txtSymptom.IsVisible = false;
            SymptomFeedbackToAdd.Usersymptomid = symptom.Id;
            symptomToAdd.Id = symptom.Id;
            SymptomFeedbackToAdd.Description = symptom.Description;
            //txtSymptom.Text = symptom.Description;

            btnAdd.Text = "Add Symptom Feedback";
            ProvidingFeedback = true;
            //CommunitySwitch.IsVisible = true;
        }

        PopulateSymptomAutoComplete();
    }


    public AddSymptom(UserSymptomView symptom, bool isFeedback)
    {
        InitializeComponent();
        manager = SymptomsManager.DefaultManager; //intiialise the Azure Symptom class 
        weathermanager = WeatherManager.DefaultManager;
        remedymanager = RemedyManager.DefaultManager;
        imagemanager = ImagesManager.DefaultManager;
        usersymptommanager = UserSymptomManager.DefaultManager;
        //RemedyPicker.SelectedIndexChanged += RemedyPicker_SelectedIndexChanged;
        symptomfeedbackmanager = SymptomFeedbackManager.DefaultManager;

        autoComplete.IsVisible = false;
        lblSearchForaSymptom.IsVisible = false;


        GetCorrectiveActions();

        Device.BeginInvokeOnMainThread(action: async () =>
        {
            Uri ImgSource = await App.GetImage("sym");
            img.Source = ImgSource;
        });

        GetUserSymptoms();

        if (isFeedback == true)
        {
            this.Title = "Enter Symptom Feedback";
            lblTitle.Text = "Enter Symptom Feedback";
            lblSubtutle.Text = "Please enter your feedback";
           // SymptomLabel.IsVisible = false;
           // txtSymptom.IsVisible = false;
            SymptomFeedbackToAdd.Usersymptomid = symptom.Usersymptomid;
            SymptomFeedbackToAdd.Description = symptom.Description;
          //  txtSymptom.Text = symptom.Description;

            btnAdd.Text = "Add Symptom Feedback";
            ProvidingFeedback = true;
            //CommunitySwitch.IsVisible = true;
        }

        PopulateSymptomAutoComplete();

        autoComplete.IsVisible = false;
        //SymptomLabel.Text = symptom.Description;
       // txtSymptom.IsVisible = false;

        var userSymptomToEdit = UserSymptoms.Where(Item => Item.Id == symptom.Usersymptomid);
    }







 async void btnAdd_Clicked(object sender, EventArgs e)
    {
        CheckSymptomInHistory(AutoCompleteSymptomToAdd.Id);


        //If the autocomplete is not empty - add that symptom to the user symptom table

        if (AutoCompleteSymptomToAdd != null)
        {

            //If the user already has symptoms, loop through them to make sure that they are not adding a duplicate

            if (UserSymptoms.Count > 0)
            {
                foreach (usersymptom item in UserSymptoms)
                {
                    if (item.Symptomid == AutoCompleteSymptomToAdd.Id)
                    {
                        await DisplayAlert("Duplicate Symptom", "You already have recorded this symptom - please log feedback against it if needed", "OK");
                        return;
                    }

                    //Check if it is not active (i.e in SYmptom History)



                    else

                    {

                        UserSymptomToAdd.Symptomid = AutoCompleteSymptomToAdd.Id;
                        UserSymptomToAdd.UserID = Helpers.Settings.UserKey;
                        UserSymptomToAdd.Datetimeadded = DateTime.Now.ToString();
                        UserSymptomToAdd.IsActive = true;




                        try
                        {
                            await usersymptommanager.AddUserSymptom(UserSymptomToAdd);
                            await AddInitialFeedback(UserSymptomToAdd.Id);
                            //await DisplayAlert("Symptom Added", "Your Symptom has been added", "OK");

                        }
                        catch (Exception ex)
                        {
                            Analytics.TrackEvent("App Screen: " + Title + ": " + ex);
                            //await DisplayAlert("Error", ex.ToString(), "OK");
                        }

                    }

                }

            }

            //if no symptoms are present (i.e the collection has a count of 0,just add the new usersymptom)
            else

            {
                usersymptom UserSymptomToAdd = new usersymptom();
                UserSymptomToAdd.Symptomid = AutoCompleteSymptomToAdd.Id;
                UserSymptomToAdd.UserID = Helpers.Settings.UserKey;
                UserSymptomToAdd.Datetimeadded = DateTime.Now.ToString();
                UserSymptomToAdd.IsActive = true;




                try
                {
                    await usersymptommanager.AddUserSymptom(UserSymptomToAdd);
                   await AddInitialFeedback(UserSymptomToAdd.Id);
                    //await DisplayAlert("Symptom Added", "Your Symptom has been added", "OK");

                }
                catch (Exception ex)
                {
                    Analytics.TrackEvent("App Screen: " + Title + ": " + ex);
                    //await DisplayAlert("Error", ex.ToString(), "OK");
                }
            }


        }