private void HandleRemove(SingleFileEntry item)
        {
            var items = SelectedItems.Cast <SingleFileEntry>().ToList();

            CurrentItem = null;
            using (new CursorHelper(this))
            {
                foreach (var selItem in items)
                {
                    var i = Duplicates.Where(x => x.FilePath == selItem.FilePath).FirstOrDefault();

                    Duplicates.Remove(i);
                    GC.Collect(); System.GC.WaitForPendingFinalizers();
                    FileSystem.DeleteFile(i.FilePath,
                                          UIOption.AllDialogs,
                                          RecycleOption.SendToRecycleBin,
                                          UICancelOption.ThrowException);
                }
            }
        }
        private bool CanExecuteRemove(SingleFileEntry obj)
        {
            var nonExistentItems = SelectedItems.Cast <SingleFileEntry>().ToList().Where(f => File.Exists(f.FilePath) == false).ToList();

            return(Duplicates.Count > 0 && obj != null && nonExistentItems.Count() == 0);
        }