使用格式将字符串转换为日期 (VB.net)
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Convert string to date with format (VB.net)
提问by TobiasKnudsen
I have a string with a date in this format. "24-11-2015" or "dd-MM-yyyy". I need to convert this to a date with this format. "2015-11-24" or "yyyy-MM-dd". I've tried several ways, and all of them rely on my system format for this to work. If i run my program on a computer with english time format this works.
我有一个带有这种格式的日期的字符串。“24-11-2015”或“dd-MM-yyyy”。我需要将其转换为这种格式的日期。“2015-11-24”或“yyyy-MM-dd”。我已经尝试了几种方法，所有方法都依赖于我的系统格式才能正常工作。如果我在具有英语时间格式的计算机上运行我的程序，这将起作用。
Date.ParseExact("24-11-2015", "dd-MM-yyyy", System.Globalization.DateTimeFormatInfo.InvariantInfo)
But if i run it on a computer running danish format i get error because there is no 24th month. How do i make the date format independent of my system time format.
但是，如果我在运行丹麦格式的计算机上运行它，则会出现错误，因为没有第 24 个月。如何使日期格式独立于我的系统时间格式。
回答by Claudius
Solution:
解决方案：
Dim dateTime As String = "24-11-2015"
Dim dt As DateTime = Convert.ToDateTime(dateTime)
Console.WriteLine("{0}-{1}-{2}", dt.Year, dt.Month.ToString("D2"), dt.Day.ToString("D2"))
Solution 2:
解决方案2：
Dim dateTime As String = "24-11-2015"
Dim dt As DateTime = Convert.ToDateTime(dateTime)
Dim format As String = "yyyy-MM-dd"
Dim str As String = dt.ToString(format)
Console.WriteLine(str)
You can also try Formatting Date and Time for a Specific Culture.
您还可以尝试格式化特定文化的日期和时间。
