On Error Goto Resume Next Vb6
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On Error Goto 0
On Error Statement On Error Statement For Each...Next Statement For...Next Statement Function Statement Get Statement GoTo Statement If...Then...Else Statement Implements Statement Imports Statement (.NET Namespace and Type) Imports Statement (XML Namespace) Inherits Statement Interface Statement Mid Statement Module Statement Namespace Statement On Error Statement Operator Statement Option
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On Error Resume Next Example
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Vba On Error Goto 0
takes a minute: Sign up Trap error or 'Resume Next' up vote 4 down vote favorite I realise this is an older programming environment, but I have to clean up some VB6 code and I am finding that most of it https://msdn.microsoft.com/en-us/library/5hsw66as.aspx uses: On Error Resume Next What is the general consensus about the use of On Error Resume Next? Surely, if there is an error, you would want the app to stop what it was doing, rollback any data changes, and inform the user of the error, rather than just resuming. When is it a good idea to use On Error Resume Next? vb6 error-handling share|improve this question edited Apr 9 '12 at 18:59 Kate Gregory 16.1k74478 asked May 3 '10 at http://stackoverflow.com/questions/2757477/trap-error-or-resume-next 10:46 CJ7 4,99232114220 See stackoverflow.com/questions/2062058/… –Daniel Daranas May 3 '10 at 10:50 3 Re-reading your question: "I am finding most of it uses..." is a bad sign. There is no good reason for the promiscuous use of On Error Resume Next. –Joel Goodwin May 3 '10 at 14:53 Q:When is it a good idea to use On Error Resume Next?A:when you are a vb6 geek. –Behrooz May 5 '10 at 11:39 add a comment| 3 Answers 3 active oldest votes up vote 4 down vote accepted I have found it useful in functions where an error would not warrant the user being interrupted with the issue. A good example is in the resize event. If you make a mistake or there's a problem in the resize event then you probably don't want the user to see this, as it probably wouldn't affect functionality. I would say in general, use it sparingly. share|improve this answer answered May 3 '10 at 20:16 pm_2 4,8152291176 1 +1. Use it sparingly and keep the scope as short as possible. Here's a nice story about how On Error Resume Next turns a little typo into an evil bug that only showed up on the customer's machine and was tricky to debug developerfusion.com/code/4325/… –MarkJ May 4 '10 at 12:04 +1: A Resize method is usually an OK use case for On Error Resume Next as mentioned here. It can
Visual Basic 6 Code "On Error Resume Next" considered harmful By Palo Mraz, published on 21 Jan 2004 | Filed in Comments Visual Basic 6 SQL Server SQL As any seasoned VB programmer knows, the On Error Resume Next statement is used to http://www.developerfusion.com/code/4325/on-error-resume-next-considered-harmful/ check for errors the old (I might also say the C-style) way. When this statement is executed, any runtime error will be silently trapped and stored in the global Err object. We VB-ers typically use this construct to execute some http://www.mrexcel.com/forum/excel-questions/530235-visual-basic-applications-error-resume-next.html "non-mission critical" code, where errors can be safely ignored. The canonical example I have seen many, many times, is the Form_Resize event handling procedure: Private Sub Form_Resize()
On Error Resume Next
' Resize the on error child controls on this form…
End Sub If this procedure did not contain the On Error Resume Next statement and a runtime error would occur, the application would be terminated with a nasty error message. (You do catch runtime errors in every event handling procedure, don't you?) In cases like this, the On Error Resume Next statement is quite handy, because it means less typing and more compact code. However, there are times, when this "handiness" might be on error goto very dangerous. The true danger of the On Error Resume Next statement lies in the fact that it makes it too easy to ignore the runtime errors. I have seen several cases, when ignoring runtime errors unintentionally was a recipe for disaster. Let me provide you with a real-life example taken from my own experience. Imagine a customer who had been using my application for several months and was happy with it. The application has a typical (somewhat boring:-) three-tier architecture (in the old days known as the Microsoft Windows DNA): VB6 front end; a typical forms-based application built with several 3rd party controls (GridEX, ActiveReports and AddFlow if you must know). VB6 back end; a DLL component configured to run as a COM+ application implementing the application's business logic (there is also the data access code-who writes middle-tier data access layer anyway:-). A set of T-SQL procedures for retrieving a updating the application's SQL Server 2000 database. One day the customer requested a new feature. After analyzing the request I realized that the request could be implemented just by enhancing one stored procedure. Great, I thought. I checked out the procedure from SourceSafe, fired up Query Analyzer, changed the procedure, debugged it and tested with the application on our test system. Everything went fine. The next day I visited the customer and deployed the stored procedure on his server. After that, I started the application, inv
Forums Excel Questions VBA on error resume next Results 1 to 10 of 10 VBA on error resume nextThis is a discussion on VBA on error resume next within the Excel Questions forums, part of the Question Forums category; Code: Sub Sample() For i = 7 To [Count] On Error Resume Next Workbooks.Open (Cells(i, 1).Value) If Err.Number 0 Then ... 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 Threaded Mode Feb 18th, 2011,11:54 AM #1 br0nc0boy New Member Join Date Mar 2009 Posts 25 VBA on error resume next Code: Sub Sample() For i = 7 To [Count] On Error Resume Next Workbooks.Open (Cells(i, 1).Value) If Err.Number <> 0 Then Err.Clear End If On Error GoTo 0 'code when there's no error Next i End Sub How can I add to my macro so that when it has an error it will bypass and go to "Next i" and not the next code in line? Thanks! Share Share this post on Digg Del.icio.us Technorati Twitter Reply With Quote Feb 18th, 2011,12:04 PM #2 Richard Schollar MrExcel MVPModeratorInactive Join Date Apr 2005 Location UK Posts 23,696 Re: VBA on error resume next Hi Try: Code: Sub Sample() Dim i As Long Dim wb As Workbook For i = 7 To [Count] On Error Resume Next Set wb = Workbooks.Open(Cells(i, 1).Value) If Not wb Is Nothing Then On Error GoTo 0 'code when there's no error End If Next i End Sub Last edited by Richard Schollar; Feb 18th, 2011 at 12:07 PM. Reason: corrected typo Share Share this post on Digg Del.icio.us Technorati Twitter Richard Schollar Using xl2013 Reply With Quote Feb 18th, 2011,12:05 PM #3 shg MrExcel MVP Join Date May 2008 Location The Great State of Texas Posts 18,599 Re: VBA on error resume next Try this. Code: Option Explicit Sub Sample() Dim i As Long For i = 7 To Range("Count").Value On Error Resume Next Workbooks.Open Cells(i, 1).Text If Err.Number <> 0 Then Err.Clear Else On Error GoTo 0 'code when there's no error End If Next i End Sub EDIT: Richard, I think your code will not detect a missing workbook if the wb variable was previously assigned? Last edited by shg; Feb 18th, 2011 at 12:09 PM. Share Share this post on Digg Del.icio.us Technorati Twitter Reply With Quote Feb 18th, 2011,12:09 PM #4 shg MrExcel MVP Join Date May 2008 Location The Great State of Texas Posts 18,599 Re: VBA on error resume next Another way: Code: Option Explicit Sub Sample() Dim i As Long For i = 7 To Range("Count").Value If Len(Dir(Cells(i, "A").Text)) Then Workbooks.Open Cells(