public static Task SerializeAsync(IList <CurrencyRate> rates)
{
return(Task.Run(() => {
var fileOpener = new FileOpener();
using (var stream = fileOpener.OpenFile(StorageFile, FileMode.Create))
using (var streamWriter = new StreamWriter(stream))
using (var writer = new JsonTextWriter(streamWriter)) {
var serializer = JsonSerializer.Create();
serializer.Serialize(writer, rates);
}
}));
}
public static IList <CurrencyRate> Deserialize()
{
var fileOpener = new FileOpener();
using (var stream = fileOpener.OpenFile(StorageFile, FileMode.OpenOrCreate)) {
if (stream.Length == 0)
{
return(null);
}
using (var streamReader = new StreamReader(stream))
using (var reader = new JsonTextReader(streamReader)) {
var serializer = JsonSerializer.Create();
return(serializer.Deserialize <IList <CurrencyRate> >(reader));
}
}
}
