XapEditor.Xap.RefreshList C# (CSharp) Method

        public void RefreshList()
        {
            List = new List<XapEntry>();
            populateList(null);
        }
        void populateList(XapEntry entry)

        public void Menu_AddFiles(object sender, RoutedEventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog()
            {
                Title = "Swap file", Multiselect = true, Filter = "Images|*.png;*.jpg;*.bmp|Assembies|*.dll|Fonts|*.font|Sounds|*.wav;*.wma|XML|*.xml|XNB|*.xnb|All files|*.*"
            };

            if ((bool)ofd.ShowDialog())
            {
                foreach (string fn in ofd.FileNames)
                {
                    System.IO.File.Copy(fn, Path.Combine(xap.Root, Path.GetFileName(fn)), true);
                }
            }
            xap.RefreshList();
            dgXap.ItemsSource = xap.List;
            dgXap.Items.Refresh();
        }