EpgTimer.SetDefSearchSettingWindow.SetDefSetting C# (CSharp) Method

        public void SetDefSetting(EpgSearchKeyInfo key)
        {
            searchKey.SetSearchKey(key);
        }

        private void button_searchKey_Click(object sender, RoutedEventArgs e)
        {
            var dlg = new SetDefSearchSettingWindow();

            dlg.Owner = CommonUtil.GetTopWindow(this);
            EpgSearchKeyInfo setKey = searchKey.Clone();

            if (checkBox_searchServiceFromView.IsChecked == true)
            {
                setKey.serviceList = listBox_serviceView.Items.OfType <ChSet5Item>().Select(ch => (long)ch.Key).ToList();
            }
            dlg.SetDefSetting(setKey);
            if (dlg.ShowDialog() == true)
            {
                searchKey = dlg.GetSetting();
                if (checkBox_searchServiceFromView.IsChecked == true)
                {
                    var oldList    = listBox_serviceView.Items.OfType <object>().ToList();
                    var searchList = new List <object>();
                    foreach (ulong sv in searchKey.serviceList)
                    {
                        if (ChSet5.ChList.ContainsKey(sv) == true)
                        {
                            searchList.Add(ChSet5.ChList[sv]);
                        }
                    }
                    listBox_serviceView.UnselectAll();
                    listBox_serviceView.Items.RemoveItems(oldList.Where(sv => searchList.Contains(sv) == false));
                    listBox_serviceView.Items.AddItems(searchList.Where(sv => oldList.Contains(sv) == false));
                }
            }
        }