DateTimePicker: Restrict time of day with

user_13634183 0
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I have a DateTimePicker that will restrict the user from selecting weekends, but I am not sure how to limit the picker to only certain hours of the day as well. I have tried using .AddHours(12) but that could put the time at 4-5am which is outside of the window I'm trying to adhere to. I'm trying to limit the selection between 8a-4p local time. Any assistance would be appreciated.

Private Sub DateTimePick_CloseUp(ByVal sender As Object, ByVal e As System.EventArgs) Handles DateTimePick.ValueChanged
    If (DateTimePick.Value.DayOfWeek = DayOfWeek.Saturday) Or (DateTimePick.Value.DayOfWeek = DayOfWeek.Sunday) Then

        'Now just add the right amount of days to make it Monday
        Select Case DateTimePick.Value.DayOfWeek
            Case DayOfWeek.Saturday
                DateTimePick.Value = DateTimePick.Value.AddDays(2)
            Case DayOfWeek.Sunday
                DateTimePick.Value = DateTimePick.Value.AddDays(1)
        End Select

        MsgBox("We're sorry, we are not currently scheduling maintenance for Saturday or Sunday. The following Monday, " &
               DateTimePick.Value.ToShortDateString & ", has been selected.",
               MsgBoxStyle.Exclamation, "Invalid selection")
    End If
End Sub
datetimepicker vb.net
1 Answers

If you want to automatically move weekends to the next Monday and invalid times to the nearest valid time on the same day, handle the Leave event and do this:

Private Sub DateTimePicker1_Leave(sender As Object, e As EventArgs) Handles DateTimePicker1.Leave
    Dim dt = DateTimePicker1.Value

    Select Case dt.DayOfWeek
        Case DayOfWeek.Saturday
            dt = dt.AddDays(2)
        Case DayOfWeek.Sunday
            dt = dt.AddDays(1)
    End Select

    If dt.TimeOfDay < TimeSpan.FromHours(8) Then
        dt = dt.Date.AddHours(8)
    ElseIf dt.TimeOfDay > TimeSpan.FromHours(16) Then
        dt = dt.Date.AddHours(16)
    End If

    DateTimePicker1.Value = dt
End Sub

If you want to force the user to select a valid date and time themselves, handle the Validating event and do this:

Private Sub DateTimePicker1_Validating(sender As Object, e As CancelEventArgs) Handles DateTimePicker1.Validating
    Dim dt = DateTimePicker1.Value

    If dt.DayOfWeek = DayOfWeek.Saturday OrElse
       dt.DayOfWeek = DayOfWeek.Sunday OrElse
       dt.TimeOfDay < TimeSpan.FromHours(8) OrElse
       dt.TimeOfDay > TimeSpan.FromHours(16) Then
        MessageBox.Show("Please select a time between 8:00 AM and 4:00 PM on a weekday",
                        "Invalid Date/Time",
                        MessageBoxButtons.OK,
                        MessageBoxIcon.Exclamation)
        e.Cancel = True
    End If
End Sub
user_5841830
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