Excel Vba Error Handling In Loop
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5331921 add a comment| 9 Answers 9 active oldest votes up vote 11 down vote accepted The problem is probably that you haven't resumed from the first error. You can't throw an error from within an error handler. You should add in a resume statement, something like the following, so VBA no longer thinks you are inside the error handler: For Each oSheet In ActiveWorkbook.Sheets On Error GoTo NextSheet: Set qry = oSheet.ListObjects(1).QueryTable oCmbBox.AddItem oSheet.Name NextSheet: Resume NextSheet2 NextSheet2: Next oSheet share|improve this answer answered Apr 27 '12 at 19:07 Gavin Smith 1,690616 add a comment| up vote 7 down vote As a general way to handle error in a loop like your sample code, I would rather use: on error resume next for each... 'do something that might raise an error, then if err.number <> 0 then ... end if next .... share|improve this answer answered Oct 4 '11 at 20:28 iDevlop 14.4k44187 add a comment| up vote 3 down vote How about: For Each oSheet In ActiveWorkbook.Sheets If oSheet.ListObjects.Count > 0 Then oCmbBox.AddItem oSheet.Name End If Next oSheet share|improve this answer edited Oct 4 '11 at 20:01 answered Oct 4 '11 at 19:56 Joe 82.4k21117231 aren't there 'list objects' that aren't query tables? I need the sheet to have a query table. –justin cress Oct 4 '11 at 20:19 @Justin, if so,
execution at a specified line upon hitting an error. Situation: Both programs calculate the square root of numbers. Square Root 1 Add the following code lines to the 'Square Root 1' command button. 1. First, we declare two Range objects. We call the
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Range objects rng and cell. Dim rng As Range, cell As Range 2. We initialize the excel vba error handling not working Range object rng with the selected range. Set rng = Selection 3. We want to calculate the square root of each cell in a randomly excel vba error handling line number selected range (this range can be of any size). In Excel VBA, you can use the For Each Next loop for this. Add the following code lines: For Each cell In rng Next cell Note: rng and cell are randomly chosen http://stackoverflow.com/questions/7653287/vba-error-handling-in-loop here, you can use any names. Remember to refer to these names in the rest of your code. 4. Add the following code line to the loop. On Error Resume Next 5. Next, we calculate the square root of a value. In Excel VBA, we can use the Sqr function for this. Add the following code line to the loop. cell.Value = Sqr(cell.Value) 6. Exit the Visual Basic Editor and test the program. Result: Conclusion: Excel VBA has ignored cells containing invalid http://www.excel-easy.com/vba/examples/error-handling.html values such as negative numbers and text. Without using the 'On Error Resume Next' statement you would get two errors. Be careful to only use the 'On Error Resume Next' statement when you are sure ignoring errors is OK. Square Root 2 Add the following code lines to the 'Square Root 2' command button. 1. The same program as Square Root 1 but replace 'On Error Resume Next' with: On Error GoTo InvalidValue: Note: InvalidValue is randomly chosen here, you can use any name. Remember to refer to this name in the rest of your code. 2. Outside the For Each Next loop, first add the following code line: Exit Sub Without this line, the rest of the code (error code) will be executed, even if there is no error! 3. Excel VBA continues execution at the line starting with 'InvalidValue:' upon hitting an error (don't forget the colon). Add the following code line: InvalidValue: 4. We keep our error code simple for now. We display a MsgBox with some text and the address of the cell where the error occurred. MsgBox "can't calculate square root at cell " & cell.Address 5. Add the following line to instruct Excel VBA to resume execution after executing the error code. Resume Next 6. Exit the Visual Basic Editor and test the program. Result: Do you like this free website? Please share this page on Google+ 3/6 Completed! Learn more about macro errors >Go to Top: Error Handlin
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 http://www.cpearson.com/excel/errorhandling.htm only a positive number is acceptable; and run time errors, that occur when VBA cannot correctly execute a program statement. We will concern ourselves here only with run time errors. Typical run http://www.vbaexpress.com/forum/showthread.php?31702-Error-Handling-Help-in-a-For-Next-Loop time errors include attempting to access a non-existent worksheet or workbook, or attempting to divide by zero. The example code in this article will use the division by zero error (Error 11) vba error 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, 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 vba error handling 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 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
VBA Code & Other Help Access Help Error Handling Help in a For...Next Loop 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 4 of 4 Thread: Error Handling Help in a For...Next Loop Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 04-23-2010,06:42 PM #1 ShamuKris View Profile View Forum Posts View Blog Entries View Articles VBAX Newbie Joined Apr 2010 Posts 3 Location Error Handling Help in a For...Next Loop Hi, I'm Kris, and was searching around on Error Handlers in a For...next loop, and I'm stuck. I don't know a lot about error handling and I hope you can help me here. I'm working in Access 2003 with VBA ( I know...stuck in the dark ages with Access here at work lol) I know exactly what is causing the problem...but, I'm unsure what error handler to code to make it work. The logic behind the code is to open an Excel workbook based on a date, import a row of excel cells as a new record in Access, close that workbook, then go to the next date. But, some times the next day looped doesn't exist as an Excel File. So, I'm trying to tell the code to skip over that date since it doesn't exist, and go to the next date. I have a form where the user enters a from date and to date (These vaules are stored variables "FromDay" and "ToDay". (i.e FromDay = 18 and ToDay = 25) The XL files (not every day will have a file date) Estore Refunds 4-19-2010 Estore Refunds 4-21-2010 Estore Refunds 4-22-2010 Pseudo code For nDays = FromDay to ToDay Step 1 Set Global_XL_Estore_Records = Global_XL_Estore.Workbooks.Open("filepath" & "Estore Refund" & month "-" & ndays & "-" year & ".xls") For 4 to 96 Step 1 ' each step is a row i