Handling Error In Vba
Contents |
resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft Student Partners ISV Startups TechRewards Events Community Magazine Forums Blogs Channel excel vba try catch 9 Documentation APIs and reference Dev centers Retired content Samples We’re
Vba Error Handling Best Practices
sorry. The content you requested has been removed. You’ll be auto redirected in 1 second. Visual Basic
Vba Error Handling In Loop
Language Reference Statements F-P Statements F-P Statements On Error Statement On Error Statement On Error Statement For Each...Next Statement For...Next Statement Function Statement Get Statement GoTo Statement If...Then...Else
Vba On Error Exit Sub
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
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 on error goto line hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges vba on error goto 0 Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. vba on error msgbox 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 https://msdn.microsoft.com/en-us/library/5hsw66as.aspx Error Handling. A good article is the one of CPearson.com However I'm still wondering if the way I used to do ErrorHandling 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 http://stackoverflow.com/questions/6028288/properly-handling-errors-in-vba-excel 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 // 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 :-) - t
the wrong time. The application may crash. A calculation may produce unexpected results, etc. You can predict http://www.functionx.com/vbaexcel/Lesson26.htm some of these effects and take appropriate actions. Some other problems http://analystcave.com/vba-proper-vba-error-handling/ are not under your control. Fortunately, both Microsoft Excel and the VBA language provide various tools or means of dealing with errors. Practical Learning:Introducing Error Handling Open the Georgetown Dry Cleaning Services1 spreadsheet and click the Employees tab Click the Payroll tab Click the TimeSheet on error tab To save the workbook and prepare it for code, press F12 Specify the folder as (My) Documents In the Save As Type combo box, select Excel Macro-Enabled Workbook Click Save Introduction to Handling Errors To deal with errors in your code, the Visual Basic language provides various techniques. One way you can do this is to vba on error prepare your code for errors. When an error occurs, you would present a message to the user to make him/her aware of the issue (the error). To prepare a message, you create a section of code in the procedure where the error would occur. To start that section, you create a label. Here is an example: Private Sub cmdCalculate_Click() ThereWasBadCalculation: End Sub After (under) the label, you can specify your message. Most of the time, you formulate the message using a message box. Here is an example: Private Sub cmdCalculate_Click() ThereWasBadCalculation: MsgBox "There was a problem when performing the calculation" End Sub If you simply create a label and its message like this, its section would always execute: Private Sub cmdCalculate_Click() Dim HourlySalary As Double, WeeklyTime As Double Dim WeeklySalary As Double ' One of these two lines could produce an error, such as ' if the user types an invalid number HourlySalary = CDbl(txtHourlySalary) WeeklyTime = CDbl(txtWeeklyTime) ' If there was an error, the flow would jump to
Tools VBA Time Saver Kit – code snippets & VBA reference VBA Web Scraping Kit – easy scraping for Excel VBA Compiler (to VB.NET) VBA Multithreading Tool Excel Scrape HTML Add-In Documentation Google Charts Tool Excel SQL Add-In Excel Optimizer How to install Excel AddIns? VBA Questions? Contact Search for: Home » Proper VBA error handling Excel, MS Office, Outlook, PowerPoint, Word Proper VBA error handling (3 votes, average: 4.67 out of 5) Loading... October 22, 2015 AnalystCave 5 Comments Writing VBA code is hard, but properly debugging code is even harder. Sounds like non-sense? Well I dare say developers spend more time debugging code than writing it. Looking for errors is what developers do most of the time! A critical part of debugging is proper error handling (VBA error handling in our case). Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. — Brian W. Kernighan However, today I don't want to expand on debugging VBA. That I covered in this post. No - today let's learn how to properly handle errors The Mouse Trap Analogy What is error handling? Take this analogy: Say you have a mouse (an error) in the house which turns up every now and then in the least expected moment as slips from your hands (an uncaught exception if you prefer). Without knowing where the mouse is and when it (the exception/error) will appear (in which line of code) you would need to search entire house to catch it (run through the entire code in our case). Obviously a better approach is setting mouse traps in several critical places in the house (corridors etc.) and waiting for the mouse to fall into your trap. So what is our mouse trap when speaking about VBA error handling? The On Error do this statement! Using VBA On Error The VBA On Error statement - tells VBA what it should do from now on, within the vicinity of the current block of code (Function or Sub), when an error/exception is raised. It is like setting a mouse trap - with the difference that you can tell it to drop the mouse off the dumpster or put it in your hands to manage. Let's remind the full syntax of the On Error statement in VBA first: On Error { GoTo [ line | 0 ] | Resume Next } Directly from MSDN we learn the different VBA error handling options we have with the On Error statement: On Error Goto - or On Error GoTo [ lineLabel | 0 | -1 ] if preffered. The Goto instruction in VBA let's you do a jump to a specific VBA code line number to follow through with error handling or simply to let code execution move on. It comes in three flavors: lineLabel - wil