Solved

Confirming a record exists on load event of a form

Posted on 2008-10-07
6
285 Views
Last Modified: 2012-05-05
I know nothing about VBA.. but i use access regularly. (my VBA class is soon thank god)

here is my issue..

I have a report and a form that ask for "Lot_Number" when they are launched.

once the user enters that "Lot_Number" it launches the approite report or form.

If the user enters an incorrect lot number it still launches the form to the first "lot_number" record.

I want to return an error if the lot number is not in the system when they input it.


This is all i have so far..

Private Sub Form_Load()

Form.OnLoad

End Sub
0
Comment
Question by:Zerofun
6 Comments
 
LVL 20

Expert Comment

by:clarkscott
ID: 22663084
In your first form... open the second form with
docmd.openform "yourform",,,,"Lot_Number = " & me.YourLotNumberField
 
in the Load event of the second form...
If isnull(me.YourLotNumber) then
       msgbox "no data"
       docmd.close
end if
 
Scott C
0
 

Author Comment

by:Zerofun
ID: 22663137
i need it to return the error even if they enter data... if the number they enter is not matched to a lot number in the database i need it to let them know and stop.
0
 
LVL 120

Expert Comment

by:Rey Obrero (Capricorn1)
ID: 22663494
then, you have to check the existence of the record first before opening the form

how are you opening the form right now?
how is the data entered?
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 38

Accepted Solution

by:
Jim P. earned 500 total points
ID: 22663526
Try this:
Private Sub Form_Load()
Dim Lookup As String
Dim ValidLot As Boolean
 
Dim Msg As String
Dim Response As Integer
 
Lookup = ""
ValidLot = False
 
Do Until Lookup <> "" And ValidLot = True
    Lookup = InputBox("Please enter the lot number", "Lot Number", Lookup)
    
    If Lookup = "" Then
        MsgBox "Nothing entered. Please enter a valid lot number.", _
                vbOKOnly + vbCritical, "No Selection"
        ValidLot = False
    End If
    If Lookup <> "" Then
        If Lookup = DLookup("Lot_Number", "MyTable", "Lot_Number = '" & Trim(Lookup) & "'") Then
            Me.Filter = "Lot_Number = '" & Trim(Lookup) & "'"
            Me.FilterOn = True
            ValidLot = True
        Else
            Msg = "The lot number " & Lookup & " does not " & _
                "appear to be valid. " & _
                Chr(13) & _
                "Please enter a valid lot number " & Chr(13) & _
                "or cancel to exit."
                
            Response = MsgBox(Msg, vbCritical + vbOKCancel, "Invalid lot number")
            If Response = vbCancel Then
                ValidLot = False
                DoCmd.Close acForm, Me.NAME, acSaveYes
                Exit Sub
            End If
        End If
    End If
Loop
 
End Sub

Open in new window

0
 

Author Closing Comment

by:Zerofun
ID: 31503981
Thanks, you went above and beyond. this helped me a lot.
0
 
LVL 38

Expert Comment

by:Jim P.
ID: 22664255
Glad to be of assistance. May all your days get brighter and brighter.
0

Featured Post

Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article describes two methods for creating a combo box that can be used to add new items to the row source -- one for simple lookup tables, and one for a more complex row source where the new item needs data for several fields.
Access developers frequently have requirements to interact with Excel (import from or output to) in their applications.  You might be able to accomplish this with the TransferSpreadsheet and OutputTo methods, but in this series of articles I will di…
With Microsoft Access, learn how to start a database in different ways and produce different start-up actions allowing you to use a single database to perform multiple tasks. Specify a start-up form through options: Specify an Autoexec macro: Us…
The viewer will learn how to use a discrete random variable to simulate the return on an investment over a period of years, create a Monte Carlo simulation using the discrete random variable, and create a graph to represent the possible returns over…

726 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question