Solved

can't update an unbound field in Datasheet view for current record without updating all records

Posted on 2004-09-06
2
863 Views
Last Modified: 2008-03-17
This should hopefully be an easy one, but I can't seem to figure it out.  I have a form being displayed in "Datasheet View" in microsoft access.  The datasheet view has several columns.

example:  ID, ColumnA, ColumnB, ColumnAB

Now, lets say that "ColumnAB" is unbound, but "ID", "ColumnA", and "ColumnB" are bound to fields in a certain table in a database.  ColumnAB is unbound because I just want to display the results of a simple calculation after values have been input into ColumnA and ColumnB without actually storing anything in the database.  Here is an example of the code I would write inside a function that would be called when the value of either ColumnA or ColumnB changes...

If [ColumnA].Value And [ColumnB].Value Then
        [ColumnAB].Value = [ColumnA].Value + [ColumnB].Value
End IF

Everything appears to work fine when I'm typing in my first record, the value of ColumnAB will update and display the correct result.  The problem occurs when I add/switch to another record (I'm in Datasheet view, so this form is showing all the records in the table at the same time).  If I switch to record 2 and change the value of ColumnA, then it calls my function to update the value of ColumnAB.  The problem is that the code [ColumnAB].value seems to update the value of ALL [ColumnAB] fields, and not just the one for the current record.  What do I need to change in my code to only refer to the [ColumnAB] field of the current record, and not change all values in the whole form?

Thanks in advance
0
Comment
Question by:nexisvi
2 Comments
 
LVL 41

Accepted Solution

by:
shanesuebsahakarn earned 50 total points
ID: 11993023
You can't. This is normal behaviour - when in datasheet or continuous form view with unbound forms. If you want to include a value that is calculated on a per-row basis, you'll need to either make it a calculated field in the form's underlying query, or a calculated control (i.e. a formula in the text box's Control Source) on the form.
0
 

Author Comment

by:nexisvi
ID: 11993562
It makes sense I guess.  I'll just include the formula as a calculated field as you suggested.  Thanks for your help.
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Some sers suddenly getting error popup msg 28 86
access pop-up form 3 31
Calculation in Access 5 24
Should I keep recordsets open? 3 23
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…
I see at least one EE question a week that pertains to using temporary tables in MS Access.  But surprisingly, I was unable to find a single article devoted solely to this topic. I don’t intend to describe all of the uses of temporary tables in t…
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…

813 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

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now