bool cascading = false;
// the null!= makes cascading true, as appendformat returns something

if (cascading || weeks != 0)
	cascading = null != ago.AppendFormat("{0} week{1}, ", weeks, weeks == 1 ? "" : "s");
if (cascading || days != 0)
	cascading = null != ago.AppendFormat("{0} day{1}, ", days, days == 1 ? "" : "s");
if (cascading || hours != 0)
	cascading = null != ago.AppendFormat("{0} hour{1}, ", hours, hours == 1 ? "" : "s");
if (cascading || mins != 0)
	cascading = null != ago.AppendFormat("{0} minute{1} and ", mins, mins == 1 ? "" : "s");

cascading = null != ago.AppendFormat("{0} second{1} ", seconds, seconds == 1 ? "" : "s");
cascading = null != ago.Append("ago");

this.LableTPlus.Text = ago.ToString();