public async Task <int> RemoveDuplicates()
{
int counter = Tracks.Count;
List <PlayableBase> noduplicates = null;
await Task.Run(() => noduplicates = Tracks.Distinct(new TrackComparer()).ToList());
if (noduplicates.Count <= 0 || noduplicates.Count == Tracks.Count)
{
return(counter - noduplicates.Count);
}
var duplicateList = Tracks.ToList();
foreach (var noduplicate in noduplicates)
{
duplicateList.Remove(noduplicate);
}
foreach (var track in duplicateList)
{
RemoveTrack(track);
}
ViewSource.Refresh();
return(counter - noduplicates.Count);
}