Solved

ms access error handling

Posted on 2013-12-11
5
236 Views
Last Modified: 2014-03-18
I keep getting a runtime error of 94 when I make the first select in the code below. How  do I create a error handle to capture null value or blank values.

Private Function calculateTotal(v1, v2)
    Dim iTier1 As Integer  ' number in control name for units sold controls - Tier1, Tier2, ...
    Dim iTier2 As Integer
    Dim cGSAR As Currency ' total per line
    Dim i As Integer 'counter for lines considered

THIS IS WHERE I BELIEVE I GET THE ERROR - I am making the first selection from combox.
 
    iTier1 = Right(v1, 1) ' gives 1 for US1, 2 for US2 and so on
    iTier2 = Right(v2, 1)
    cGSAR = 0
    For i = iTier1 To iTier2
        cGSAR = cGSAR + Me.Controls("Tier" & i)
    Next
   
    calculateTotal = cGSAR
End Function
0
Comment
Question by:deefel
  • 2
  • 2
5 Comments
 
LVL 84
ID: 39710840
You can use the Nz function:

If Nz(v1, "") <> "" Then
    iTier1 = Right(v1, 1) ' gives 1 for US1, 2 for US2 and so on
End If
If Nz(v2, "") <> "" Then
    iTier2 = Right(v2, 1)
End If
0
 
LVL 95

Expert Comment

by:Lee W, MVP
ID: 39710915
You have a number of ways.

One option would be:
'First, set iTier1 to a default value - empty, 0, whatever 
iTier1 = "0" 'Or something else (including "") since it's otherwise not valid.

'Then test if v1 meets the criteria necessary to assign a different value to iTier1 - 
'leave the default if not, otherwise, make iTier1 the new value.
If IsNull(v1) = False Then
   If Len(v1) > 0 Then
      If IsNumeric(v1) = True Then
         iTier1 = Right(v1, 1) ' gives 1 for US1, 2 for US2 and so on
      End If
   End If
End If

Open in new window

0
 

Author Comment

by:deefel
ID: 39712309
I tried the code, but still got the error message ~ it could be I put the code in th wrong place.  I have attached a sample database and a screenshot.  When in the database select from the drop down for Tier1/PL 1a value ~ this is where the error happens
example-1.zip
screen-shot.xlsx
0
 

Author Comment

by:deefel
ID: 39713543
Could I please get help with runtime error.  see example-1 database.  thanks
0
 
LVL 84

Accepted Solution

by:
Scott McDaniel (Microsoft Access MVP - EE MVE ) earned 300 total points
ID: 39716728
You can't run CalculateTotal if either incoming value is NULL, so just check for that before you get started with the code:

Private Function calculateTotal(v1, v2)

    If Nz(v1, "") = "" Or Nz(v2, "") = "" Then
        Exit Function
    End If


    Dim iTier1 As Integer  ' number in control name for units sold controls - Tier1, Tier2, ...
    Dim iTier2 As Integer
    Dim cGSAR  As Currency    ' total per line
    Dim i      As Integer    'counter for lines considered


    iTier1 = Right(v1, 1)    ' gives 1 for US1, 2 for US2 and so on
    iTier2 = Right(v2, 1)
    cGSAR = 0
    For i = iTier1 To iTier2
        cGSAR = cGSAR + Me.Controls("Tier" & i)
    Next

    calculateTotal = cGSAR
End Function

Open in new window

0

Featured Post

Comprehensive Backup Solutions for Microsoft

Acronis protects the complete Microsoft technology stack: Windows Server, Windows PC, laptop and Surface data; Microsoft business applications; Microsoft Hyper-V; Azure VMs; Microsoft Windows Server 2016; Microsoft Exchange 2016 and SQL Server 2016.

Question has a verified solution.

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

Suggested Solutions

Experts-Exchange is a great place to come for help with solutions for your database issues, and many problems are resolved within minutes of being posted.  Others take a little more time and effort and often providing a sample database is very helpf…
Phishing attempts can come in all forms, shapes and sizes. No matter how familiar you think you are with them, always remember to take extra precaution when opening an email with attachments or links.
Familiarize people with the process of utilizing SQL Server views from within Microsoft Access. Microsoft Access is a very powerful client/server development tool. One of the SQL Server objects that you can interact with from within Microsoft Access…
Using Microsoft Access, learn some simple rules for how to construct tables in a relational database. Split up all multi-value fields into single values: Split up fields that belong to other things into separate tables: Make sure that all record…

776 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