public async Task <HallDTO> LoadHallAsync(string id, HallDTO hallCached, CancellationToken cancellationToken)
{
if (CheckConnection())
{
try
{
string content = await LoadAsync(new Uri($"{App.UriBase}/api/Halls/{id}?hash={hallCached.GetHashCode()}"), cancellationToken);
if (string.IsNullOrEmpty(content))
{
return(hallCached);
}
HallDTO hall = JsonConvert.DeserializeObject <HallDTO>(content);
await DependencyService.Get <CachingService>().WriteHallAsync(hall);
return(hall);
}
catch (Exception ex)
{
if (ex is HttpRequestException || ex is WebException)
{
return(hallCached);
}
else if (ex is OperationCanceledException)
{
throw ex;
}
}
}
return(hallCached);
}
