.net 中的日期时间到 UnixTime Stamp
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DateTime to UnixTime Stamp in .net
提问by Ramji
Is there any function in vb dot net to convert datetime to unix time stamp If I google I get only the vice versa but not vb.net to unix time stamp
vb dot net 中是否有任何函数可以将日期时间转换为 unix 时间戳
Any help is appreciated
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回答by curtisk
{Edit} removed old reference link
{Edit} 移除了旧的参考链接
Seconds since Jan 1, 1970 = unix time
自 1970 年 1 月 1 日以来的秒数 = unix 时间
To get this in VB.NET see below example (in example using DateTime.UtcNow, but you can plug in any DateTime you want there)
要在 VB.NET 中获得它，请参见下面的示例（在使用 DateTime.UtcNow 的示例中，但您可以插入您想要的任何 DateTime）
Dim uTime As Integer
uTime = (DateTime.UtcNow - New DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds
回答by Ian
I wrote these at some point - all similar to the above just with a little more detail on the old summer time adjustment thing for me here in the UK.
我在某个时候写了这些 - 所有类似于上面的内容，只是对我在英国这里的旧夏令时调整事情有更多的细节。
Public Function UnixToTime(ByVal strUnixTime As String) As Date
UnixToTime = DateAdd(DateInterval.Second, Val(strUnixTime), #1/1/1970#)
If UnixToTime.IsDaylightSavingTime = True Then
UnixToTime = DateAdd(DateInterval.Hour, 1, UnixToTime)
End If
End Function
Public Function TimeToUnix(ByVal dteDate As Date) As String
If dteDate.IsDaylightSavingTime = True Then
dteDate = DateAdd(DateInterval.Hour, -1, dteDate)
End If
TimeToUnix = DateDiff(DateInterval.Second, #1/1/1970#, dteDate)
End Function
回答by John Boker
Looking at http://www.codeproject.com/KB/cs/timestamp.aspxit shows unix->.net so you can go backwards most likely:
查看http://www.codeproject.com/KB/cs/timestamp.aspx它显示 unix->.net 所以你很可能可以倒退：
DateTime dt = "the date";
DateTime start= new System.DateTime(1970, 1, 1, 0, 0, 0, 0);
TimeSpan ts = (dt - start);
ts.TotalSeconds //unix timestamp
or something similar will do it.
或类似的东西会做到这一点。
note, this has not been tested by me so it probably wont work :)
请注意，这尚未经过我的测试，因此可能无法正常工作:)
回答by Chris Tyler
In javascript, at least, unix timestamps are milliseconds, and I found a case where I needed them. This code makes use of .Net using 10,000 ticks / millisecond. Here's the code I used:
至少在 javascript 中，unix 时间戳是毫秒，我发现我需要它们的情况。此代码使用 .Net 使用 10,000 滴答/毫秒。这是我使用的代码：
Public Module UnixTime
Const UnixEraStartTicks As Long = 621355968000000000
<Extension> Public Function UnixTimestamp(value As Date) As Long
Dim UnixEraTicks = value.Ticks - UnixEraStartTicks
Return UnixEraTicks \ 10000
End Function
Public Function DateFromUnix(timestamp As Long) As Date
Return New Date(UnixEraStartTicks + timestamp * 10000)
End Function
End Module
