c#计算两个时间差

private string DateDiff(DateTime DateTime1, DateTime DateTime2)
{
string dateDiff = null;
try
{
TimeSpan ts1 = new TimeSpan(DateTime1.Ticks);
TimeSpan ts2 = new TimeSpan(DateTime2.Ticks);
TimeSpan ts = ts1.Subtract(ts2).Duration();
dateDiff = ts.Days.ToString() + "天"+
ts.Hours.ToString() + "小时"
+ ts.Minutes.ToString() + "分钟"
+ ts.Seconds.ToString() + "秒";
}
catch
{

}
return dateDiff;
}