/// <summary>
/// Adds the given value to the selection collection and notifies the listeners that the selection has changed.
/// </summary>
/// <param name="value"></param>
public void Add(T value)
{
if (ChangedItems == null)
{
ChangedItems = new MultipleSelectionCache <T>();
}
internalValues.Add(value);
ChangedItems.addedValues.Add(value);
Raise();
}
/// <summary>
/// Attempts to remove the specified value from the selection, and if successful, it nofifies the listeners that the selection has changed.
/// </summary>
/// <param name="value"></param>
public void Remove(T value)
{
if (internalValues.Remove(value))
{
if (ChangedItems == null)
{
ChangedItems = new MultipleSelectionCache <T>();
}
ChangedItems.removedValues.Add(value);
Raise();
}
}
protected override void OnSelectedValueChanged()
{
ChangedItems = null;
}