Question

任何人都可以帮助我如何使用vb.net验证两个DateTime之间的给定DateTime？

给定的DateTime不能介于两个DateTime ..

之间

Answer 1

您可以将date instances与数字进行比较，因为它们会覆盖LessThan，LessThanOrEqual，GreaterThan和GreaterThanOrEqual运算符：

Dim minDate = New DateTime(2009, 4, 17)
Dim maxDate = New DateTime(2011, 4, 17)
Dim selectedDate = New DateTime(2010, 4, 17)

If selectedDate > minDate And selectedDate < maxDate Then
    Console.WriteLine("selected date is valid")
Else
    Console.WriteLine("selected date is invalid")
End If

Answer 2

使用DateTime.Compare

Dim date1 As New DateTime(100)
Dim date2 As New DateTime(200)
Dim workingDate As New DateTime(150)    

If DateTime.Compare(workingDate , date1) >= 0 AND DateTime.Compare(workingDate , date2) <= 0 Then
    Console.WriteLine("Between")
Else
    Console.WriteLine("Not Between")
End If

Answer 3

Dim dt As Date = DateTimePicker1.Value.Date
If dt < CDate("2010-04-01") Or dt > CDate("2010-04-10") Then
    MessageBox.Show("Date is not in the first 10 days of April so is ok")
End If

vb.net中的日期时间验证

3 个答案: