private async void EditClass3Btn_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                ActiveProgressRing();
                if (null == firstCategory.SelectedValue || null == secondCategory.SelectedValue)
                {
                    return;
                }
                var secondCategoryList = CategoryList.Where(x => x.Name == firstCategory.SelectedValue.ToString()).FirstOrDefault().Children;
                var thirdCategoryList  = secondCategoryList.Where(x => x.Name == secondCategory.SelectedValue.ToString()).FirstOrDefault().Children;
                var currentExists      = thirdCategoryList.Select(x => x.Name).ToList();
                var text = String.Join(Environment.NewLine, thirdCategory.Items.Select(x => (x as BlockQueryCategory).Name));
                CategoryContentDialog dialog = new CategoryContentDialog(text, "三级分类");
                var result = await dialog.ShowAsync();

                if (result == ContentDialogResult.Primary)
                {
                    var keywordsList = dialog.TextString.Trim('\r').Split(new char[] { '\r' }, StringSplitOptions.RemoveEmptyEntries).Distinct().ToList();
                    keywordsList.ForEach(item =>
                    {
                        if (!currentExists.Contains(item))
                        {
                            thirdCategoryList.Add(new BlockQueryCategory()
                            {
                                Name = item, Children = null
                            });
                        }
                    });
                    var deleteList = currentExists.Except(keywordsList);
                    var removeList = thirdCategoryList.Where(x => deleteList.Contains(x.Name)).ToList();
                    removeList.ForEach(item =>
                    {
                        thirdCategoryList.Remove(item);
                    });
                    thirdCategory.ItemsSource = null;
                    Class3List.Clear();
                    thirdCategoryList.ToList().ForEach(item => { Class3List.Add(item); });
                    thirdCategory.ItemsSource = Class3List;
                    // Thread.Sleep(1000* thirdCategoryList.Count);
                    // thirdCategory.SelectedItem = thirdCategory.Items?.FirstOrDefault();
                    //thirdCategory.ItemsSource = thirdCategoryList;
                }
            }
            catch (Exception ex)
            {
                await MainPage.ShowErrorMessage(ex.Message);
            }
            finally
            {
                InActiveProgressRing();
            }
        }
        public async void EditClass1Btn_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                if (null == deleteIds)
                {
                    deleteIds = new List <string>();
                }
                ActiveProgressRing();
                var text = String.Join(Environment.NewLine, firstCategory.Items.Select(x => (x as BlockQueryCategory).Name));
                CategoryContentDialog dialog = new CategoryContentDialog(text, "一级分类");
                var result = await dialog.ShowAsync();

                if (result == ContentDialogResult.Primary)
                {
                    var currentExists = CategoryList.Select(x => x.Name).ToList();
                    var keywordsList  = dialog.TextString.Split(new char[] { '\r' }, StringSplitOptions.RemoveEmptyEntries).Distinct().ToList();
                    keywordsList.ForEach(item =>
                    {
                        if (!currentExists.Contains(item))
                        {
                            CategoryList.Add(new BlockQueryCategory()
                            {
                                Name = item, Children = new List <BlockQueryCategory>()
                            });
                        }
                    });
                    var deleteList = currentExists.Except(keywordsList);
                    var removeList = CategoryList.Where(x => deleteList.Contains(x.Name)).ToList();
                    for (int i = 0; i < removeList.Count; i++)
                    {
                        var isDelete = await WarningTip(removeList[i]);

                        if (isDelete)
                        {
                            deleteIds.Add(removeList[i].Id);
                            if (removeList[i].Children != null && removeList[i].Children.Count > 0)
                            {
                                Class2List.Clear();
                                Class3List.Clear();
                            }
                            CategoryList.Remove(removeList[i]);
                        }
                    }
                    Class1List.Clear();
                    CategoryList.ToList().ForEach(item => { Class1List.Add(item); });
                    // firstCategory.ItemsSource = CategoryList;
                    //Parallel.ForEach(removeList, async item =>
                    //{
                    //    var isDelete = await WarningTip(item);
                    //    await Windows.ApplicationModel.Core.CoreApplication.MainView.CoreWindow.Dispatcher
                    //    .RunAsync(CoreDispatcherPriority.Normal, () =>
                    //    {
                    //        if (isDelete)
                    //        {
                    //            deleteIds.Add(item._id);
                    //            CategoryList.Remove(item);
                    //        }
                    //    });
                    //});
                    // Thread.Sleep(1000 * CategoryList.Count);
                    // firstCategory.SelectedItem = firstCategory.Items?.FirstOrDefault();
                }
            }
            catch (Exception ex)
            {
                await MainPage.ShowErrorMessage(ex.Message);
            }
            finally
            {
                InActiveProgressRing();
            }
        }