On Error Exit Sub Access
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Vba On Error Exit Function
maintained. On Error Statement (Visual Basic) Visual Studio 2015 Other Versions Visual Studio 2013 Visual Studio 2012 Visual Studio 2010 Visual Studio 2008 Visual Studio 2005 Visual Studio .NET 2003 Enables an error-handling routine and specifies the location of the routine within a procedure; can also be used to disable an error-handling routine. Without an On Error statement, any run-time error that occurs is fatal: an error message is displayed, and execution stops.Whenever possible, we suggest you use structured exception handling in your code, rather than using unstructured exception handling and the On Error statement. For more information, see Try...Catch...Finally Statement (Visual Basic).Note The Error keyword is also used in the Error Statement, which is supported for backward compatibility.Syntax Copy On Error { GoTo [ line | 0 | -1 ] | Resume Next } PartsTermDefinitionGoTo lineEnables the error-handling routine that starts at the line specified in the required line argument. The line argument is any line label or line number. If a run-time error occurs, control branches to the specified line, making the error handler active. The specified line must be in the same procedure
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Vba Error Handling Best Practices
the workings and policies of this site About Us Learn more on error goto 0 about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow vba on error goto 0 Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each https://msdn.microsoft.com/en-us/library/5hsw66as.aspx other. Join them; it only takes a minute: Sign up Error Handler - Exit Sub vs. End Sub up vote 13 down vote favorite 1 Why would I want to get out of an Error Handler (after handling) with an Exit Sub instead of just letting it go to the End Sub? I'm sure it's simple. I just http://stackoverflow.com/questions/1377152/error-handler-exit-sub-vs-end-sub don't understand. Thanks for any help. Example: Public Sub SubA() On Error Goto ProcError ''# other code MsgBox FuncA() ProcExit: Exit Sub ProcError: MsgBox Err.Description Resume ProcExit End Sub vba vb6 error-handling share|improve this question edited Sep 4 '09 at 12:06 AnthonyWJones 145k22195274 asked Sep 4 '09 at 3:53 RNamo add a comment| 2 Answers 2 active oldest votes up vote 19 down vote accepted Your ProcExit label is your place where you release all the resources whether an error happened or not. For instance: Public Sub SubA() On Error Goto ProcError Connection.Open Open File for Writing SomePreciousResource.GrabIt ProcExit: Connection.Close Connection = Nothing Close File SomePreciousResource.Release Exit Sub ProcError: MsgBox Err.Description Resume ProcExit End Sub share|improve this answer answered Sep 4 '09 at 5:08 AngryHacker 23.2k60200387 1 +1. And, obviously, if you don't need to close or release any resources, there's no need for it and you can just fall through to the End Sub. –MarkJ Sep 4 '09 at 8:16 @MarkJ: Thats probably Ok but I'd be
a full version of Access, while a run-time version just crashes. For a more detailed approach to error handling, see FMS' article on http://allenbrowne.com/ser-23a.html Error Handling and Debugging. The simplest approach is to display the Access error message and quit the procedure. Each procedure, then, will have this format (without the line numbers): 1 Sub|Function http://www.dbforums.com/showthread.php?1654951-Proper-way-to-do-error-checking-in-VBA-for-Access SomeName() 2 On Error GoTo Err_SomeName ' Initialize error handling. 3 ' Code to do something here. 4 Exit_SomeName: ' Label to resume after error. 5 Exit Sub|Function ' Exit on error before error handler. 6 Err_SomeName: ' Label to jump to on error. 7 MsgBox Err.Number & Err.Description ' Place error handling here. 8 Resume Exit_SomeName ' Pick up again and quit. 9 End Sub|Function For a task where several things could go wrong, lines 7~8 will be replaced with more detail: Select Case Err.Number Case 9999 ' Whatever number you anticipate. Resume on error exit Next ' Use this to just ignore the line. Case 999 Resume Exit_SomeName ' Use this to give up on the proc. Case Else ' Any unexpected error. Call LogError(Err.Number, Err.Description, "SomeName()") Resume Exit_SomeName End Select The Case Else in this example calls a custom function to write the error details to a table. This allows you to review the details after the error has been cleared. The table might be named "tLogError" and consist of: Field Name Data Type Description ErrorLogID AutoNumber Primary Key. ErrNumber Number Long Integer. The Access-generated error number. ErrDescription Text Size=255. The Access-generated error message. ErrDate Date/Time System Date and Time of error. Default: =Now() CallingProc Text Name of procedure that called LogError() UserName Text Name of User. ShowUser Yes/No Whether error data was displayed in MsgBox Parameters Text 255. Optional. Any parameters you wish to record. Below is a procedure for writing to this table. It optionally allows recording the value of any variables/parameters at the time the error occurred. You can also opt to suppress the display of information about the error. Function LogError(ByVa
If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Results 1 to 6 of 6 Thread: Proper way to do error checking in VBA for Access Tweet Thread Tools Show Printable Version Subscribe to this Thread… Search Thread Advanced Search Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 03-27-10,05:35 #1 tvb2727 View Profile View Forum Posts Registered User Join Date Jan 2010 Posts 44 Unanswered: Proper way to do error checking in VBA for Access What is the code that is similar to a Try/Catch in Visual Basic 2008? I tried the below code, but it seems to always fire and show the message box even when there is no error message. Thanks. 'On Error GoTo ErrHandler: ' sample code here 'ErrHandler: ' MsgBox ("error has occured") ' Resume Next Reply With Quote 03-27-10,08:49 #2 pkstormy View Profile View Forum Posts Moderator Join Date Dec 2004 Location Madison, WI Posts 3,926 You need an: Exit sub or Exit function after your code and before the ErrHandler: Otherwise your code continues on through the ErrHandler: section (and showing the msgbox "error has occured"). ie. Exit sub ErrorHandler: or Exit Function ErrorHandler: Last edited by pkstormy; 03-27-10 at 09:06. Expert Database Programming MSAccess since 1.0, SQL Server since 6.5, Visual Basic (5.0, 6.0) Reply With Quote 03-27-10,21:25 #3 tvb2727 View Profile View Forum Posts Registered User Join Date Jan 2010 Posts 44 I add a message box to a button click like you said and get the error below Private Sub btnUpdate_Click() On Error GoTo ErrHandler: MsgBox ("test") End Sub ErrHandler: MsgBox ("error has occured") Error: --------------------------- Microsoft Visual Basic --------------------------- Compile error: Label not defined --------------------------- OK Help --------------------------- Reply With Quote 03-27-10,22:15 #4 canupus View Profile View Forum Posts Registered User Join D