private void Search()
 {
     if (string.IsNullOrWhiteSpace(SearchText))
     {
         NiCovid19Model.Clear();
         GetCountryListcases();
         NiCovid19Model.Clear();
     }
     else
     {
         var countrySearch = NiCovid19Model.Where(c => c.country.ToLower().StartsWith(SearchText.ToLower())).ToList();
         NiCovid19Model.Clear();
         foreach (var country in countrySearch)
         {
             NiCovid19Model.Add(country);
         }
     }
 }
        private async void GetCountryListcases()
        {
            Device.BeginInvokeOnMainThread(() => { IsBusy = true; });
            IRestResponse response = await _commonServices.GetCountries();

            if (response.StatusCode == HttpStatusCode.OK)
            {
                var totalCae = JsonConvert.DeserializeObject <List <NinjaCovid19CountriesModel> >(response.Content);

                foreach (var data in totalCae)
                {
                    double dcases = CommonUtils.ConvertToDouble(data.cases);
                    var    cases  = dcases.ToString("N0", CultureInfo.InvariantCulture);

                    double dtodayCases = CommonUtils.ConvertToDouble(data.todayCases);
                    var    todayCases  = dtodayCases.ToString("N0", CultureInfo.InvariantCulture);

                    double ddeaths = CommonUtils.ConvertToDouble(data.deaths);
                    var    deaths  = ddeaths.ToString("N0", CultureInfo.InvariantCulture);


                    double dtodayDeaths = CommonUtils.ConvertToDouble(data.todayDeaths);
                    var    todayDeaths  = dtodayDeaths.ToString("N0", CultureInfo.InvariantCulture);

                    double drecovered = CommonUtils.ConvertToDouble(data.recovered);
                    var    recovered  = drecovered.ToString("N0", CultureInfo.InvariantCulture);

                    double dactive = CommonUtils.ConvertToDouble(data.active);
                    var    active  = dactive.ToString("N0", CultureInfo.InvariantCulture);

                    double dcritical = CommonUtils.ConvertToDouble(data.critical);
                    var    critical  = dcritical.ToString("N0", CultureInfo.InvariantCulture);

                    double dcasesPerOneMillion = CommonUtils.ConvertToDouble(data.casesPerOneMillion);
                    var    casesPerOneMillion  = dcasesPerOneMillion.ToString("N0", CultureInfo.InvariantCulture);


                    DateTime start             = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
                    Double   db                = Convert.ToDouble(data.updated);
                    var      CountryUpdatetime = start.AddMilliseconds(db).ToLocalTime();
                    var      DateCurrent       = CountryUpdatetime.ToString("dddd, dd MMMM yyyy HH:mm:ss");


                    // Recovered = data.recovered.ToString();
                    NiCovid19Model.Add(new NinjaCovid19CountriesModel()
                    {
                        countryInfo         = data.countryInfo,
                        country             = data.country,
                        cases               = cases,
                        todayCases          = "+ " + todayCases + "",
                        deaths              = deaths,
                        todayDeaths         = "+ " + todayDeaths + "",
                        recovered           = recovered,
                        active              = active,
                        critical            = "+ " + critical + "",
                        casesPerOneMillion  = data.casesPerOneMillion,
                        deathsPerOneMillion = data.deathsPerOneMillion,
                        updated             = DateCurrent,
                    });

                    Device.BeginInvokeOnMainThread(() => { IsBusy = false; });
                }
            }
        }