private void PopulateLivestreams(List <LivestreamModel> livestreamModels)
{
foreach (var livestream in livestreamModels)
{
var livestreamModel = Livestreams.FirstOrDefault(x => Equals(livestream, x));
livestreamModel?.PopulateSelf(livestream);
}
var newStreams = livestreamModels.Except(Livestreams).ToList();
var removedStreams = Livestreams.Except(livestreamModels).ToList();
Livestreams.AddRange(newStreams);
Livestreams.RemoveRange(removedStreams);
}
private void PopulateLivestreams(List <LivestreamModel> livestreamModels)
{
foreach (var livestream in livestreamModels)
{
var livestreamModel = Livestreams.FirstOrDefault(x => Equals(livestream, x));
livestreamModel?.PopulateSelf(livestream);
}
var newStreams = livestreamModels.Except(Livestreams).ToList();
var removedStreams = Livestreams.Except(livestreamModels).ToList();
// add/remove streams one at a time so we trigger regular add/remove collection change event
// using addrange/removerange will instead trigger a reset event and will not state what new items were added/removed
foreach (var livestreamModel in newStreams)
{
Livestreams.Add(livestreamModel);
}
foreach (var livestreamModel in removedStreams)
{
Livestreams.Remove(livestreamModel);
}
}
