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detect docmd error even if setwarnings  is OFF

Posted on 2011-09-07
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Last Modified: 2012-08-14
Often, my vba programs need to analyze the cause of an error and take appropriate action.



But this is not easy when the error comes from a docmd method, when setwarnngs is off.

I want the my vba to see the EXACT same text that a user would have seen if setwarnings had been ON, but I do not want the user to see that text.
 


 For instance the following code does not work

on error resume next
docmd.setwarnings false
docmd.xxxxxxxxxxx
myerror$ = error$   '  THIS will always be blank. It fails because Access thinks that setwarnings false means "don't throw any errors".
docmd.setwarnings true
on error goto myerr_routine
if myerror$ like "*unable to append*" then ....

In the past I have used many "tricks" to get around this problem but I am looking for a general solution that will work for all the many dozens of methods that could be invoked.  



rberke
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Question by:rberke
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3 Comments
 
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Accepted Solution

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DatabaseMX (Joe Anderson - Microsoft MVP, Access and Data Platform) earned 2000 total points
ID: 36499089
Let me suggest a safer way ... that gets away from the SetWarnings False - which can have many undesirable ramifications.  

The problem with SetWarnings False is ... if one (or more) of the queries fail for *whatever* unexpected reason ... you will never know this because SetWarnings False masks out *all* errors, which can lead to you *thinking* that everything ran ok, when in fact it did not.

The approach below has two advantages:

1) You do not get the warning prompts - just like if you use SetWarnings False ... AND ...
2) If an Error DOES occur, it will be trapped and you can act accordingly.

Private Sub btnRunQry_Click()
   
    On Error GoTo btnRunQry_Click_Error
    CurrentDb.Execute "SomeActionQuery1", dbFailOnError
    CurrentDb.Execute "SomeActionQuery2", dbFailOnError
    MsgBox "Operation completed successfully!"

btnRunQry_Click_Exit:
    Err.Clear
    Exit Sub

btnRunQry_Click_Error:
   MsgBox "An error occurred:" & vbCrLf & Err.Number & vbCrLf & Err.Description
   GoTo btnRunQry_Click_Exit
End Sub

******

Another problem with SetWarnings False is ... if you *forget* to execute SetWarnings True ... OR ... some other error does occur and SetWarnings True does not get execute ... you have a big problem ... because, False stays in effect unit you close and reopen Access.  

So, for example if you are working in design view of say a form (or table, etc) ... and you make some changes ... and hit Save ... you are NOT prompted for 'Do you want to save these changes ...". I will just silently save the changes ... which may NOT be what you wanted to do!!
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LVL 5

Author Comment

by:rberke
ID: 36499331
yes, that is an alternative when I am running a query/sql statement.

But, there are a bunch of other docmds methods.  Any suggestions for those?



0
 
LVL 5

Author Closing Comment

by:rberke
ID: 36943496
The partial answer suggested an alternative that works for open query.

I will resubmit the question at a later date for alternatives to other docmd functions.
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