public static List<SimpleKeyValue<int?, string>> ListDictionaryItemsAsKeyValueByDictionaryCodename(Dictionaries.Codename DictionaryCodenameItem,int? SelectedKey = null, ICacheAssistance Cache = null)
        {
            if(Cache == null)
            {
                Cache = new MemoryCacheAssistance();
            }

            var Items = Cache.GetDataFromCache<List<SimpleKeyValue<int?, string>>>(DictionaryCodenameItem.DictionaryName);
            if (Items == null)
            {
                Items = ListDictionaries(Level: 1, DictionaryCode: DictionaryCodenameItem.DictionaryCode).Select(Item => new SimpleKeyValue<int?, string> { Key = Item.DictionaryID, Value = Item.Caption }).ToList();
                if (Items != null)
                {
                    Cache.SetDataToCache(DictionaryCodenameItem.DictionaryName, Items, DateTime.Now.AddMinutes(AppSettings.CacheDurationInSecondsDefault));
                }
            }

            var ItemsCloned = Items.Clone();
            if (SelectedKey.HasValue)
            {
                var SelectedItem = ItemsCloned.Find(Item => Item.Key == SelectedKey);
                if (SelectedItem != null)
                {
                    SelectedItem.IsSelected = true;
                }
            }

            return ItemsCloned;
        }