2个DateTime类型的变量相减怎么得到X天X小时类型
------解决思路----------------------
http://www.cnblogs.com/wifi/articles/2439916.html
private string DateDiff(DateTime DateTime1, DateTime DateTime2)
{string dateDiff = null;
TimeSpan ts = DateTime1.Subtract(DateTime2).Duration();
dateDiff = ts.Days.ToString()+"天"+ ts.Hours.ToString()+"小时"+ ts.Minutes.ToString()+"分钟"+ ts.Seconds.ToString()+"秒";
return dateDiff;
}