OpenTween.TweenMain.IsTwitterId C# (CSharp) Method

        public bool IsTwitterId(string name)
        {
            if (this.tw.Configuration.NonUsernamePaths == null || this.tw.Configuration.NonUsernamePaths.Length == 0)
                return !Regex.Match(name, @"^(about|jobs|tos|privacy|who_to_follow|download|messages)$", RegexOptions.IgnoreCase).Success;
            else
                return !this.tw.Configuration.NonUsernamePaths.Contains(name.ToLowerInvariant());
        }

        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);
                    }
                }
            }
        }