public async Task EnsureActualAsync()
{
if (_busy)
{
return;
}
_busy = true;
try {
if (_readerFunc != null)
{
using (var reader = _readerFunc()) {
if (!_storage.IsActual(reader))
{
IsLoading = true;
if (_preparationFunc != null)
{
await _preparationFunc();
}
_listChangeId = _changeId;
_list = await _storage.UpdateCachedAsync(reader);
_lastLoaded = DateTime.Now;
OnPropertyChanged(nameof(EntriesCount));
OnPropertyChanged(nameof(LastModified));
IsLoading = false;
return;
}
}
}
_listChangeId = _changeId;
_list = _storage.GetCached().ToList();
_lastLoaded = DateTime.Now;
OnPropertyChanged(nameof(EntriesCount));
} finally {
_busy = false;
}
}
