Specific Date

[Guest]

In a form text box how can I require them to enter a specific date i.e.
sunday dates only. I have the format set to short date.

Thanks,
Corby

 

[JohnFol]

Hi Corby, Access has a WeekDay function that will tell you if the date is a
Monday, Tuesday .. .Sunday, however . . .. for such a restrictive list,
that is prone to people typing in more wrong dates that right, I'd be
tempted to use a combo / listbox to select the date. Then, you just present
the user with a list of "Sundays"

 

[Guest]

On the before update event of the field you can check the value enterd, if
the value doesnt match the criteria, display a message, and return to the
date field, until the value will be repaired

If not isnull(Me.DateFieldName) then
If Weekday(Me.DateFieldName) <> 1 then
msgbox "Day must be 1"
cancel = true ' wont let exit the field
end if
end if

 

[Guest]

Effective, but slow data entry. You will need code to create your row source
and have to look through 52 or so entries in the list. Here is a function
you can use that will do what you want.

Function IsItSunday(varCheckDate As Variant) As Boolean
Dim lngDayNum As Long
Dim dtmcheckdate As Date
On Error GoTo IsItSunday_Exit
If Not IsDate(varCheckDate) Then
MsgBox "Invalid Date"
IsItSunday = False
Exit Function
Else
dtmcheckdate = CDate(varCheckDate)
End If
lngDayNum = Weekday(dtmcheckdate, vbSunday)
If lngDayNum <> 1 Then
MsgBox Format(dtmcheckdate, "short date") & " is " _
& WeekdayName(lngDayNum, False, vbSunday) & vbNewLine _
& "Last Sunday was " & DateAdd("d", vbSunday - DatePart("w",
date), date) _
& vbNewLine _
& "Next Sunday is " & DateAdd("d", vbSunday + DatePart("w",
date), date)
IsItSunday = False
Else
IsItSunday = True
End If
Exit Function
IsItSunday_Exit:
MsgBox "Invalid Format"
IsItSunday = False
End Function

To call it, put this in the Before Update event of where you enter the date:
If Not IsItSunday(Me.MyDateControL) Then
Cancel = True
End If

I would also recommend setting the Input Mask of your control to "Short Date"