public async Task GetPublicTicksLevel2()
{
// Public feed ticks level2
List <TTFeedTickLevel2> publicTicksLevel2;
if (string.IsNullOrEmpty(PublicTicksL2Filter))
{
publicTicksLevel2 = await _client.GetPublicAllTicksLevel2Async();
}
else
{
publicTicksLevel2 = await _client.GetPublicTickLevel2Async(PublicTicksL2Filter);
}
PublicTicksL2 = publicTicksLevel2 != null ? new ObservableCollection <FeedTickL2View>(publicTicksLevel2.Select(t => new FeedTickL2View(t))) : null;
}