OpenTween.TweenMain.GetStatusLabelText C# (CSharp) Method

        private string GetStatusLabelText()
        {
            //ステータス欄にカウント表示
            //タブ未読数/タブ発言数 全未読数/総発言数 (未読＠＋未読DM数)
            if (_statuses == null) return "";
            TabModel tbRep = _statuses.GetTabByType(MyCommon.TabUsageType.Mentions);
            TabModel tbDm = _statuses.GetTabByType(MyCommon.TabUsageType.DirectMessage);
            if (tbRep == null || tbDm == null) return "";
            int urat = tbRep.UnreadCount + tbDm.UnreadCount;
            int ur = 0;
            int al = 0;
            int tur = 0;
            int tal = 0;
            StringBuilder slbl = new StringBuilder(256);
            try
            {
                foreach (var tab in _statuses.Tabs.Values)
                {
                    ur += tab.UnreadCount;
                    al += tab.AllCount;
                    if (_curTab != null && tab.TabName.Equals(_curTab.Text))
                    {
                        tur = tab.UnreadCount;
                        tal = tab.AllCount;
                    }
                }
            }
            catch (Exception)
            {
                return "";
            }

            UnreadCounter = ur;
            UnreadAtCounter = urat;

            var homeTab = this._statuses.GetTabByType<HomeTabModel>();

            slbl.AppendFormat(Properties.Resources.SetStatusLabelText1, tur, tal, ur, al, urat, _postTimestamps.Count, _favTimestamps.Count, homeTab.TweetsPerHour);
            if (this._cfgCommon.TimelinePeriod == 0)
            {
                slbl.Append(Properties.Resources.SetStatusLabelText2);
            }
            else
            {
                slbl.Append(this._cfgCommon.TimelinePeriod + Properties.Resources.SetStatusLabelText3);
            }
            return slbl.ToString();
        }