如何在 vb.net 中将 double 转换为时间
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How to convert double to time in vb.net
提问by user3275784
I have a variable that stores the time in entered by a user. I get an error that says it cannot convert it from a double to a date. How do I go about doing this?
我有一个变量来存储用户输入的时间。我收到一个错误，说它无法将它从双精度转换为日期。我该怎么做？
Essentially I need to take the time in from a user and convert it into minutes. I'm not sure how to do this though.
本质上，我需要从用户那里获取时间并将其转换为分钟。我不知道如何做到这一点。
Private Sub TextBox1_TextChanged(sender As Object, e As EventArgs) Handles txtTimeIn.TextChanged, txtTimeIn.TextChanged
Dim m_decTimeIn As DateTime
m_decTimeIn = Val(txtTimeIn)
End Sub
回答by Gabriel De Oliveira
Dim myDateTime As DateTime = DateTime.FromOADate(myDouble)
回答by JaredPar
The Valfunction converts, in this particular overload, a Stringvalue to a Double. This type is not convertible to DateTimeand hence the compiler issues an error.
Val在这个特定的重载中，该函数将一个String值转换为 a Double。此类型不可转换为DateTime，因此编译器会发出错误。
In order to convert a Stringto a date use Datetime.Parseinstead
为了将 a 转换String为日期，请Datetime.Parse改用
m_decTimeIn = DateTime.Parse(txtTimeIn.Text)
