vb.net 如何获取时间差？？？？？？？？？？

[manica]

我用C#用：
DateTime dt1 =Convert.ToDateTime("2004-6-30 16:37:13");
DateTime dt2 = Convert.ToDateTime("2004-7-1 14:36:33");
TimeSpan ts = dt2-dt1;
Response.Write(ts.Hours.ToString());

可以获得正常

我用
Dim oldTime As DateTime = DateTime.Now
'函数。。。。。
Dim newTime As DateTime = DateTime.Now
Dim ts As TimeSpan = newTime- oldTime
就出错
“-”号不是为date类型定义的

请大虾们帮忙？急！！！！！！！！！！

[ZLiu]

System.DateTime.Compare(newTime,oldTime)

[nchen123]

dim oldTime as DateTime = DateTime.Now
dim i as Int32
for i = 0 to 10000
i = i + 1
next
dim newTime as DateTime = DateTime.Now
dim v as Long = DateDiff("d", oldTime, newTime)
dim ts as TimeSpan = TimeSpan.FromTicks(v)
Console.WriteLine(ts.ToString())
Console.ReadLine()

[lzf913]

System.Environment.TickCount

[manica]

要精确到秒或毫秒！！！！！！！！！！！！！！！！！！！！！！！！！！！

[ZLiu]

dim v as Long = DateDiff("s", oldTime, newTime)

[manica]

没有豪秒吗？datetime定义的就只有精确到秒，怎么样才能精确到豪秒

[tianjue0921]

在数据库中用DateDiff