public void addElement(MediaElement inElement)
{
if (inElement != null)
{
MediaElements.Add(inElement);
OnPropertyChanged("MediaElements");
}
}
public void removeSelected()
{
if (SelectedElement != null)
{
MediaElements.Remove(SelectedElement);
OnPropertyChanged("MediaElements");
}
}
public void AddRangeIfNotExists(List <MediaElement> elements)
{
if (elements != null)
{
HashSet <MediaElement> existingElements = MediaElements.AsNoTracking().ToHashSet(new MediaElementComparer());
HashSet <MediaElement> newElements = elements.ToHashSet(new MediaElementComparer());
newElements.ExceptWith(existingElements);
MediaElements.AddRange(newElements);
}
}
