private ObservableItemContainer <Tuple <TOuter, TInner>, TResult> Merge(
TOuter outerItem, TInner innerItem)
{
var tuple = Tuple.Create(outerItem, innerItem);
var observable = _resultSelector(tuple.Item1, tuple.Item2);
var container = new ObservableItemContainer <Tuple <TOuter, TInner>, TResult>(tuple, observable);
container.ValueChanged += MergedContainerOnValueChanged;
return(container);
}
private void DestroyContainer(ObservableItemContainer <Tuple <TOuter, TInner>, TResult> item)
{
item.ValueChanged -= MergedContainerOnValueChanged;
item.Dispose();
}
