OpenTween.TweenMain.AddNewTabForUserTimeline C# (CSharp) Method

        public void AddNewTabForUserTimeline(string user)
        {
            //同一検索条件のタブが既に存在すれば、そのタブアクティブにして終了
            foreach (var tb in _statuses.GetTabsByType<UserTimelineTabModel>())
            {
                if (tb.ScreenName == user)
                {
                    foreach (TabPage tp in ListTab.TabPages)
                    {
                        if (tb.TabName == tp.Text)
                        {
                            ListTab.SelectedTab = tp;
                            return;
                        }
                    }
                }
            }
            //ユニークなタブ名生成
            string tabName = "user:" + user;
            while (_statuses.ContainsTab(tabName))
            {
                tabName += "_";
            }
            //タブ追加
            var tab = new UserTimelineTabModel(tabName, user);
            this._statuses.AddTab(tab);
            this.AddNewTab(tab, startup: false);
            //追加したタブをアクティブに
            ListTab.SelectedIndex = ListTab.TabPages.Count - 1;
            SaveConfigsTabs();
            //検索実行
            this.GetUserTimelineAsync(tab);
        }

        private void WebBrowser_Navigating(object sender, WebBrowserNavigatingEventArgs e)
        {
            if (e.Url.AbsoluteUri != "about:blank")
            {
                e.Cancel = true;

                if (e.Url.AbsoluteUri.StartsWith("http://twitter.com/search?q=%23") ||
                    e.Url.AbsoluteUri.StartsWith("https://twitter.com/search?q=%23"))
                {
                    //ハッシュタグの場合は、タブで開く
                    string urlStr = HttpUtility.UrlDecode(e.Url.AbsoluteUri);
                    string hash   = urlStr.Substring(urlStr.IndexOf("#"));
                    MyOwner.HashSupl.AddItem(hash);
                    MyOwner.HashMgr.AddHashToHistory(hash.Trim(), false);
                    MyOwner.AddNewTabForSearch(hash);
                    return;
                }
                else
                {
                    Match m = Regex.Match(e.Url.AbsoluteUri, @"^https?://twitter.com/(#!/)?(?<ScreenName>[a-zA-Z0-9_]+)$");
                    if (AppendSettingDialog.Instance.OpenUserTimeline && m.Success && MyOwner.IsTwitterId(m.Result("${ScreenName}")))
                    {
                        MyOwner.AddNewTabForUserTimeline(m.Result("${ScreenName}"));
                    }
                    else
                    {
                        MyOwner.OpenUriAsync(e.Url.OriginalString);
                    }
                }
            }
        }