VB。NET 将日期转换为数字
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Vb. NET Convert a date to number
提问by Gherghina Ionut-Valentin
I have this code in VB . NET
我在 VB 中有这段代码。网
dim date_e As DateTime
date_e = New DateTime(CLng(Convert.ToDouble("635434240520170000")))
The result is:
结果是：
12.08.2014 07:07:32
Now my question is how i can reverse that encoding to obtain the number from a specific date and time witch i input myself: Lets' say.
现在我的问题是如何反转该编码以从我自己输入的特定日期和时间获取数字：让我们说。
22.09.2014 07:07:32
Thank you!
谢谢！
回答by Tim Schmelter
The DateTimeconstructorthat takes a Longare the ticks since January 1, 0001 at 00:00:00.000 in the Gregorian calendar.
采用 a的DateTime构造函数是Long自公历 0001 年 1 月 1 日 00:00:00.000 以来的刻度。
You just need to parse the string to Datefirst, then you can use it's Ticksproperty:
您只需Date要先解析字符串，然后就可以使用它的Ticks属性：
Dim dt = Date.Parse("22.09.2014 07:07:32") ' presumes that this is the correct format
Dim ticks As Long = dt.Ticks
If the input date-string is in a different format than your current culture you can use Date.Parsewith the correct culture:
如果输入日期字符串的格式与您当前的文化不同，您可以使用Date.Parse正确的文化：
dt = Date.Parse("22.09.2014 07:07:32", New CultureInfo("de-DE"))
or - if you don't know the culture but only the format - Date.ParseExact:
或者-如果您不了解文化而只了解格式- Date.ParseExact：
dt = Date.ParseExact("22.09.2014 07:07:32", "dd.MM.yyyy HH:mm:ss", CultureInfo.InvariantCulture)
