Access 2007 Vba Error Trapping
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Access Vba Error Handling Module
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Vba Error Handling Best Practices
Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign https://msdn.microsoft.com/en-us/library/ee358847(v=office.12).aspx up MS-Access, VBA and error handling up vote 11 down vote favorite 6 This is more an observation than a real question: MS-Access (and VBA in general) is desperately missing a tool where error handling code can be generated automatically, and where the line number can be displayed when an error occurs. Did you find a solution? What is it? I just realized http://stackoverflow.com/questions/357822/ms-access-vba-and-error-handling how many hundreds of hours I spared since I found the right answer to this basic problem a few years ago, and I'd like to see what are your ideas and solutions on this very important issue. vba ms-access error-handling access-vba share|improve this question edited May 27 '15 at 7:40 shruti1810 2,3231725 asked Dec 10 '08 at 22:24 Philippe Grondier 7,90721753 add a comment| 4 Answers 4 active oldest votes up vote 5 down vote Well there are a couple of tools that will do what you ask MZ Tools and FMS Inc come to mind. Basically they involve adding an: On Error GoTo ErrorHandler to the top of each proc and at the end they put an: ErrorHandler: Call MyErrorhandler Err.Number, Err.Description, Err.LineNumber label with usually a call to a global error handler where you can display and log custom error messages share|improve this answer answered Dec 10 '08 at 22:40 DJ. 12.6k22941 You took the words out of my mouth! –Philippe Grondier Dec 10 '08 at 23:00 3 This is slightly misleading as Err.LineNumber doesn't exist.. So while good practice for gen
Comments Before delving into actual programming functions and sub-routine, we must first establish an error handler. An error handler is a bit of code which will do pre-defined actions whenever an error occurs. For instance, generate a http://www.devhut.net/2010/10/07/ms-access-vba-error-handling/ message to the user or developper describing the nature of the error. For an error http://datagnostics.com/dtips/vbaerrors.html handler to be useful, it must provide a minimum of information in its message to the user. Below is a typical example of an error handler I use. Modify it in any way to suit your exact needs. On Error GoTo Error_Handler 'Your code will go here Error_Handler_Exit: On Error Resume Next Exit {PROCEDURE_TYPE} Error_Handler: MsgBox "The following error has occured" vba error & vbCrLf & vbCrLf & _ "Error Number: " & Err.Number & vbCrLf & _ "Error Source: {PROCEDURE_NAME}/{MODULE_NAME}" & vbCrLf & _ "Error Description: " & Err.Description, vbCritical, _ "An Error has Occured!" Resume Error_Handler_Exit A Concrete Example Sub HelloWorld() On Error GoTo Error_Handler MsgBox "Hello Word!" Error_Handler_Exit: On Error Resume Next Exit Sub Error_Handler: MsgBox "The following error has occured" & vbCrLf & vbCrLf & _ "Error Number: " & Err.Number & vbCrLf vba error trapping & _ "Error Source: YourModuleName/HelloWorld" & vbCrLf & _ "Error Description: " & Err.Description, vbCritical, _ "An Error has Occured!" Resume Error_Handler_Exit End Sub Note: Although VBA provides programmers with the possibility of using the err.source statement, it sadly does not help truly identify the culprit of the current error. This is why you must manually enter in the {MODULE_NAME} / {PROCEDURE_NAME} for each error handler. Trust me, although it may take a few extra seconds to do, it will same you loads of troubleshooting time later on (I'm talking from experience)!!! Also, if you are going to be doing some serious vba (MS Access, Word, Excel, …) work and not just a little tinkering, you should most probably seriously consider looking into the Mz-Tools add-in (free with no strings attached) in conjunction with implementing Allen Browne Error Log (for database developers). These two tools/approaches will greatly simplify and standardize your work!!! View ratings Rate this article Rate this article Article ratingsCurrent average ratings. Ease of understanding 4.7 3 ratings Helpful/Useful 4.7 3 ratings Complete 4.0 3 ratings Easy to find 4.3 3 ratings I am highly knowledgeable about this topic (optional) I have a relevant college/university degree It is part of my profession It is a deep personal passion Submit Ratings MS Access VBA Programming VBA Leave a Reply Cancel reply Your email address will not be published. Req
error condition is raised. If you have made provision for that possibility, your code can recover gracefully and continue or terminate as appropriate; if not, Access will do its best to handle the error itself -- usually not in the way you would prefer. An untrapped, or unhandled, error is one that is raised by your application and not handled by error-handling code that you write. Such errors are then dealt with by Access's default error-handling routine, which displays the description of the error and, depending on your option settings, may allow you to debug the code. But it also tends to reset the VBA project, so that all global variables are returned to their uninitialized states. And if the database is run using the Access run-time module and not the full version of Access, the application will simply shut down. To avoid having this happen, put error-handling code in (at least) all your top-level VBA procedures. By "top-level" procedures, I mean those that are not called by other procedures you write, but rather are triggered by events. You can also write whatever specialized error-handling you want for lower-level procedures that are called from the top-level procedures, but if a lower-level procedure doesn't have its own error-handling code, its errors will be handled by a higher-level procedure's error-handler, if there is one, so you don't *necessarily* have to write an error-handler for every procedure. By error-handling code, I refer to using the On Error statement to define what will happen and where code execution will continue in the event of an error being raised by your code. Most often you will want to use the "On Error GoTo" form of the statement, to transfer control to an error-handling section in the procedure, from which section, eventually, the Resume statement is used to continue execution after the error has been dealt with. An alternative to this is "in-line" error-handling, which is done