public IUndoRedoAction Execute()
{
var ii = Collection as ISupportInitialize;
if (ii != null)
{
ii.BeginInit();
}
IUndoRedoAction result = null;
if (Args.Action == NotifyCollectionChangedAction.Add)
{
Collection.RemoveAt(Collection.Count - 1);
result = new CollectionChangeUndoRedoAction(Collection, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, Args.NewItems));
}
if (Args.Action == NotifyCollectionChangedAction.Remove)
{
foreach (var i in Args.OldItems)
{
Collection.Add(i);
}
result = new CollectionChangeUndoRedoAction(Collection, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, Args.OldItems));
}
if (ii != null)
{
ii.EndInit();
}
return(result);
}
public IUndoRedoAction Execute()
{
var ii = Collection as ISupportInitialize;
if (ii != null) ii.BeginInit();
IUndoRedoAction result = null;
if (Args.Action == NotifyCollectionChangedAction.Add)
{
Collection.RemoveAt(Collection.Count - 1);
result = new CollectionChangeUndoRedoAction(Collection, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, Args.NewItems));
}
if (Args.Action == NotifyCollectionChangedAction.Remove)
{
foreach (var i in Args.OldItems)
Collection.Add(i);
result = new CollectionChangeUndoRedoAction(Collection, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, Args.OldItems));
}
if (ii != null) ii.EndInit();
return result;
}
