?
Solved

Ms Access - VBA DLookup returning Null Values

Posted on 2008-10-16
2
Medium Priority
?
948 Views
Last Modified: 2013-12-25
Afternoon,

I have a set of DLookups which populate a text field accoring to what ID number someone puts in another text field. Can someone tell me how I would output a message box if that ID retrn no records? My current code is;

strSPNValue = txtSPN.Value
txtSPNName = DLookup("[spn_name]", "Sel_Historical_SPN_Lookup", "SPN ='" & strSPNValue & "'")

Thanks
0
Comment
Question by:andyb7901
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 61

Expert Comment

by:mbizup
ID: 22730761
Use an If-then block.  If Dlookup returns a Null, then there are no records found.

Dim varLU as Variant
strSPNValue = txtSPN.Value
VarLU =  DLookup("[spn_name]", "Sel_Historical_SPN_Lookup", "SPN ='" & strSPNValue
if isNull(VarLU) then
    MsgBox "No records found"
   ' etc
end if
txtSPNName = VarLU
0
 
LVL 93

Accepted Solution

by:
Patrick Matthews earned 2000 total points
ID: 22730834
Or:

txtSPNName = Nz(DLookup("[spn_name]", "Sel_Historical_SPN_Lookup", "SPN ='" & strSPNValue & "'"), "")
If txtSPNName = "" Then
    'do something
End If
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

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

Preparing an email is something we should all take special care with – especially when the email is for somebody you may not know very well. The pressures of everyday working life stacked with a hectic office environment can make this a real challen…
You need to know the location of the Office templates folder, so that when you create new templates, they are saved to that location, and thus are available for selection when creating new documents.  The steps to find the Templates folder path are …
Learn how to number pages in an Access report over each group. Activate two pass printing by referencing the pages property: Add code to the Page Footers OnFormat event to capture the pages as there occur for each group. Use the pages property to …
In Microsoft Access, learn the trick to repeating sub-report headings at the top of each page. The problem with sub-reports and headings: Add a dummy group to the sub report using the expression =1: Set the “Repeat Section” property of the dummy…
Suggested Courses
Course of the Month15 days, 3 hours left to enroll

771 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