private List <Currency> GetListCurrency(bool connection)
        {
            string text = "";

            if (connection)
            {
                var client = new WebClient
                {
                    Encoding = Encoding.UTF8
                };

                text = client.DownloadString("http://api.nbp.pl/api/exchangerates/tables/a/?format=json");
            }
            else
            {
                text = ReadAndWriteJson.ReadJson();
            }

            text = text.TrimStart(new char[] { '[' }).TrimEnd(new char[] { ']' });
            JObject        serch   = JObject.Parse(text);
            IList <JToken> results = serch["rates"].Children().ToList();

            List <Currency> searchResults = new List <Currency>();

            foreach (var result in results)
            {
                Currency searchResult = result.ToObject <Currency>();
                searchResults.Add(searchResult);
            }
            return(searchResults);
        }
        private string GetDate()
        {
            var text = ReadAndWriteJson.ReadJson();

            text = text.TrimStart(new char[] { '[' }).TrimEnd(new char[] { ']' });
            JObject serch = JObject.Parse(text);

            return(Helpers.ReversDate(serch["effectiveDate"].ToString()));
        }