C#时间相减

DateTime dtone = Convert.ToDateTime("2007-1-1 05:32:22"); DateTime dtwo = Convert.ToDateTime("2007-1-1 04:20:15"); TimeSpan span = dtone.Subtract(dtwo); Response.Write(span.Days + "天" + span.Hours + "小时" + span.Minutes + "分钟" + span.Seconds+"秒");