private void LoadCategoryFilter()
            {
                _filterCategoryList.Clear();

                foreach (var item in CategoryHelper.CategoryList)
                {
                    var filterItem = new FilterCategoryItem
                    {
                        Id        = item.Key,
                        ParamName = CategoryFilterPrefix + item.Value.DefaultName,

                        IsToggle = true,
                    };

                    if (Application.Current.Properties.ContainsKey(filterItem.ParamName))
                    {
                        string value    = Application.Current.Properties[filterItem.ParamName] as string;
                        bool   resValue = true;
                        if (bool.TryParse(value, out resValue))
                        {
                            filterItem.IsToggle = resValue;
                        }
                    }

                    _filterCategoryList.Add(filterItem);
                }
            }
            public async void SaveCategoryFilter(FilterCategoryItem filterCategoryItem)
            {
                var paramName = CategoryFilterPrefix + filterCategoryItem.CategoryData.DocumentId;

                Application.Current.Properties[paramName] = filterCategoryItem.IsToggle;

                await Application.Current.SavePropertiesAsync();
            }
            private void LoadCategoryFilter()
            {
                _filterCategoryList.Clear();

                foreach (var item in CategoryHelper.CategoryList)
                {
                    var filterItem = new FilterCategoryItem 
                    {
                        Id = item.Key,
                        ParamName = CategoryFilterPrefix + item.Value.DefaultName,

                        IsToggle = true,
                    };

                    if (Application.Current.Properties.ContainsKey(filterItem.ParamName))
                    {
                        string value = Application.Current.Properties[filterItem.ParamName] as string;
                        bool resValue = true;
                        if (bool.TryParse(value, out resValue))
                            filterItem.IsToggle = resValue;
                    }

                    _filterCategoryList.Add(filterItem);
                }
            }