On Error Goto Label Vba
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three flavors: compiler errors such as undeclared variables that prevent your code from compiling; user data entry error such as a user entering a negative value where only a positive number is acceptable; and run time errors, that occur when VBA cannot correctly on error goto vba execute a program statement. We will concern ourselves here only with run time errors. Typical run
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time errors include attempting to access a non-existent worksheet or workbook, or attempting to divide by zero. The example code in this article on error goto line will use the division by zero error (Error 11) when we want to deliberately raise an error. Your application should make as many checks as possible during initialization to ensure that run time errors do not occur later. In Excel, vba error handling in loop this includes ensuring that required workbooks and worksheets are present and that required names are defined. The more checking you do before the real work of your application begins, the more stable your application will be. It is far better to detect potential error situations when your application starts up before data is change than to wait until later to encounter an error situation. If you have no error handling code and a run time error occurs, VBA will
Vba On Error Goto 0
display its standard run time error dialog box. While this may be acceptable, even desirable, in a development environment, it is not acceptable to the end user in a production environment. The goal of well designed error handling code is to anticipate potential errors, and correct them at run time or to terminate code execution in a controlled, graceful method. Your goal should be to prevent unhandled errors from arising. A note on terminology: Throughout this article, the term procedure should be taken to mean a Sub, Function, or Property procedure, and the term exit statement should be taken to mean Exit Sub, Exit Function, or Exit Property. The term end statement should be taken to mean End Sub , End Function, End Property, or just End. The On Error Statement The heart of error handling in VBA is the On Error statement. This statement instructs VBA what to do when an run time error is encountered. The On Error statement takes three forms. On Error Goto 0 On Error Resume Next On Error Goto
Forums Excel Questions VBA - On Error Goto (Label) Results 1 to 6 of 6 VBA - On Error Goto (Label)This is a discussion on VBA - On Error Goto vba error handling best practices (Label) within the Excel Questions forums, part of the Question Forums category; Hi vba on error exit sub there, I'm trying to create a method of preventing people from using my macro on the wrong workbooks and ...
Vba Error Number
LinkBack LinkBack URL About LinkBacks Bookmark & Share Digg this Thread!Add Thread to del.icio.usBookmark in TechnoratiTweet this thread Thread Tools Show Printable Version Display Linear Mode Switch to Hybrid Mode Switch to http://www.cpearson.com/excel/errorhandling.htm Threaded Mode Oct 7th, 2011,04:26 AM #1 flipdazed New Member Join Date Sep 2011 Posts 25 VBA - On Error Goto (Label) Hi there, I'm trying to create a method of preventing people from using my macro on the wrong workbooks and incorrectly named workbooks or sheets. I have tried: Code: ' Error Messages ErrMsg11: MsgBox ("This macro is intended for 'DT Global Orders Incomplete.xlsx'" & vbCrLf http://www.mrexcel.com/forum/excel-questions/583997-visual-basic-applications-error-goto-label.html & _ "Please ensure that is is named correctly or that you are running the macro on the correct file."), , "Filename Error - You got Schooled!" ErrMsg12: MsgBox ("Enter the main sheet is titled:" & vbCrLf & "'DT Global Orders Incomplete'."), , "Wrong Sheet Titles!" Windows("DT Global Orders Incomplete.xlsx").Activate On Error GoTo ErrMsg11 Sheets("DT Global Orders Incomplete").Select On Error GoTo ErrMsg12 It always flags the errors though even if there is no error happening. I tried putting the labels at the end of my sub but then they're never flagged! Can anyone help me out? Ideally I want a message box to flag up with the message telling someone what they did wrong. Thanks Share Share this post on Digg Del.icio.us Technorati Twitter Reply With Quote Oct 7th, 2011,04:31 AM #2 RoryA MrExcel MVPModerator Join Date May 2008 Location East Sussex Posts 28,379 Re: VBA - On Error Goto (Label) Error handlers should appear at the bottom of the sub, and there should be an Exit Sub above them otherwise they will always be executed. Share Share this post on Digg Del.icio.us Technorati Twitter Rory Microsoft MVP - Excel ʅ_(ツ)_ʃ Add-in for posting ranges as co
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs http://stackoverflow.com/questions/6028288/properly-handling-errors-in-vba-excel 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 other. Join them; it only takes a minute: Sign up Properly Handling Errors in VBA (Excel) up vote 34 down vote favorite 19 I've been working with VBA for quite a while now, but I'm still not so sure about Error Handling. A good article is the one of CPearson.com However I'm still wondering if the way I used to do ErrorHandling on error was/is completely wrong: Block 1 On Error Goto ErrCatcher If UBound(.sortedDates) > 0 Then // Code Else ErrCatcher: // Code End If The if clause, because if it is true, it will be executed and if it fails the Goto will go into the Else-part, since the Ubound of an Array should never be zero or less, without an Error, this method worked quite well so far. If I understood it right it should be like this: Block 2 On Error Goto ErrCatcher If Ubound(.sortedDates) > 0 Then // on error goto Code End If Goto hereX ErrCatcher: //Code Resume / Resume Next / Resume hereX hereX: Or even like this: Block 3 On Error Goto ErrCatcher If Ubound(.sortedDates) > 0 Then // Code End If ErrCatcher: If Err.Number <> 0 then //Code End If The most common way I see is that one, that the Error "Catcher" is at the end of a sub and the Sub actually ends before with a "Exit Sub", but however isn't it a little confusing if the Sub is quite big if you jump vice versa to read through the code? Block 4 Source of the following Code: CPearson.com On Error Goto ErrHandler: N = 1 / 0 ' cause an error ' ' more code ' Exit Sub ErrHandler: ' error handling code' Resume Next End Sub Should it be like in Block 3 ? Thank you for reading my question Greetings skofgar excel vba share|improve this question edited Jun 28 '14 at 13:37 asked May 17 '11 at 8:38 skofgar 7042916 7 rather than risk throwing an error with If Ubound(.sortedDates)>0 use If IsArrayAllocated(.sortedDates) = TRUE –osknows May 17 '11 at 8:53 Wow! that was fast :-) - thank you, that makes the On Error Goto unnecessary here... –skofgar May 17 '11 at 8:56 But if it wasn't an array check.. though I can't of any other case.. I think my question is answered like this - there's no way to vote up your comment is there?, because it's a really good one :-) –skofgar May 17 '11 at 9:03 add a co