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Access 2000 NULL Argument Issue

Posted on 2005-05-06
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Last Modified: 2012-05-05
Greetings, experts.

We have a situation with the following statement:

 DoCmd.OpenForm rst![Argument], , , , , , rst![OpenArgs]

If the last argument is NULL, Access 2000 gives an error, because it doesn't like all of the commas with a NULL at the end. However, if we change it to concatenate and empty string as follows:

 DoCmd.OpenForm rst![Argument], , , , , , rst![OpenArgs] & ""

It works fine. I suspect the following would also work, but I haven't tested it:

If IsNull(rst![OpenArgs]) then
     DoCmd.OpenForm rst![Argument]
else
     DoCmd.OpenForm rst![Argument], , , , , , rst![OpenArgs]
end if

So we can fix this issue on a case by case basis.

However, we are converting this database from Access 97 to 2000, and there are tons of places this kind of code is used throughout the application. Is there a global fix for this issue so we don't have to waste lots of time going through and modifying each one?

Thanks!
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Question by:jdrits
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Jim Horn earned 2000 total points
ID: 13945233
A simple Find...Replace in code should work.  Type your code block above in Notepad, then copy-paste it into the Replace textbox.

For a more 'elegant' solution, download Rick Fisher's 'Find & Replace Utility at http://www.rickworld.com ($39 buy, free 30-day download), which is an Access add-in that lets you find and replace strings in your entire Access database.

For a few more bells and whistles, Speed Ferret at http://www.moshannon.com also does this, but with a $199 price tag.  However, using this allows you to do the same single find.. replace withing Access, VB, AND SQL Server in one shot.

Hope this helps.
-Jim
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Author Comment

by:jdrits
ID: 13946041
Jim,

Thanks, but the problem isn't a simple search and replace. The code I put above is only an example of the issue. There are other instances that use other code or variables, arguments, etc.

The one thing I could do is do a find for multiple commas in a row. I suppose if there isn't a global way to address this issue, that's what I'll have to do.

Thanks for your suggestion, though.

John
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