Access VBA: Is it possible to reset error handling?

On error goto 0 give hand to visual basic for error treatment (in general message box)

On error goto label will redirect your code to label:

On error resume next will ignore the error and continue

Resume next redirect the code to the next line after the error is raised

it means that combinations of instructions such as

    On Error goto 0    ...    On Error goto 0

do not make sense

And if you want to redirect an "on error" instruction you'll have to do it this way:

    Do While Not rs.EOF                On Error Resume Next        rs2.Open strsql        On error Goto 0        rs2.moveNext    Loop

If you want to redirect an error to a label (for treatment or whatever) and then go back to the code where the error occured, you have to write something like:

    On error goto label    ...    ...    On error goto 0    exit sub (or function)    label:    ....    resume next    end function

But I really advise you to be more rigorous on your error management. You should first be able to do something like that:

    Set objexcel = CreateObject("excel.Application")    objexcel.Visible = True    On Error GoTo error_Treatment    wbExists = False    Set wbexcel = objexcel.Workbooks.Open("C:\REPORT3.xls")    Set objSht = wbexcel.Worksheets("Sheet1")    objSht.Activate    wbExists = True    On error GoTo 0    Set db = DBEngine.opendatabase("C:\book.mdb")    Set rs = db.OpenRecordset("records")    Set rs2 = CreateObject("ADODB.Recordset")    rs2.ActiveConnection = CurrentProject.Connection    For Each tdf In CurrentDb.TableDefs        ....        'there are a number of potential errors here in your code'        'you should make sure that rs2 is closed before reopening it with a new instruction'        'etc.'    Next tdf    Exit sub    error_treatment:    SELECT Case err.number       Case **** '(the err.number raised when the file is not found)'           objexcel.Workbooks.Add           Set wbexcel = objexcel.ActiveWorkbook           Set objSht = wbexcel.Worksheets("Sheet1")           Resume next 'go back to the code'       Case **** '(the recordset cannot be opened)'           ....           ....           Resume next 'go back to the code'       Case **** '(whatever other error to treat)'           ....           ....           Resume next 'go back to the code'       Case Else           debug.print err.number, err.description '(check if .description is a property of the error object)'           'your error will be displayed in the immediate windows of VBA.'            'You can understand it and correct your code until it runs'       End select    End sub

The next step will be to anticipate the errors in your code so that the err object will not be raised. You can for example write a generic function like this one:

    Public function fileExists (myFileName) as Boolean

You can then take advantage of this function in your code by testing the existence of your xls file:

    if fileExists("C:\REPORT3.xls") Then        Set wbexcel = objexcel.Workbooks.Open("C:\REPORT3.xls")    Else       objexcel.Workbooks.Add       Set wbexcel = objexcel.ActiveWorkbook    Endif            Set objSht = wbexcel.Worksheets("Sheet1")    objSht.Activate

You do not need your wbExist variable anymore...

In the same way, you should anticipate the case where your recordset has no records. Writing down rs.MoveFirst before testing it could raise an error. You should then write

    If rs.EOF and rs.BOF then    Else        rs.moveFirst        Do while not rs.EOF             rs.moveNext        Loop    End If

You need to clear the error. Try putting this code in:

If Err.Number > 0 Then    Err.ClearEnd If

You can also use Err.Number to handle specific error cases.

It is nearly always better to avoid errors, rather than handling them. For example:

Set objexcel = CreateObject("excel.Application")objexcel.Visible = True'On Error GoTo Openwb ''wbExists = False 'If Dir("C:\REPORT3.xls") = "" Then    objexcel.Workbooks.Add    Set wbexcel = objexcel.ActiveWorkbook    Set objSht = wbexcel.Worksheets("Sheet1")Else    Set wbexcel = objexcel.Workbooks.Open("C:\REPORT3.xls")    Set objSht = wbexcel.Worksheets("Sheet1")End IfobjSht.Activate'wbExists = True '