On Error Vbs
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Error Handling In Vbscript Tutorial
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On Error Resume Next Vbscript W3schools
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error handling On Error goto
Vbscript Error Handling Line Number
0 - Disable error handling Error properties: err.Number (default) err.Source err.Description Examples on error resume next vba In the examples below - replace the 'code goes here' line with your VBScript commands. Example 1) Trap https://technet.microsoft.com/en-us/library/ee692852.aspx an error On Error Resume Next' code goes hereIf Err.Number <> 0 Then 'error handling: WScript.Echo Err.Number & " Srce: " & Err.Source & " Desc: " & Err.Description Err.ClearEnd If Example 2) Trap an error or http://ss64.com/vb/onerror.html success On Error Resume Next' code goes hereIf Err.Number = 0 Then WScript.Echo "It worked!" Else WScript.Echo "Error:" WScript.Echo Err.Number & " Srce: " & Err.Source & " Desc: " & Err.Description Err.ClearEnd If Example 3) Trap an error On Error Resume Next' code goes hereIf Err.Number <> 0 Then ShowError("It failed") Sub ShowError(strMessage) WScript.Echo strMessage WScript.Echo Err.Number & " Srce: " & Err.Source & " Desc: " & Err.Description Err.Clear End Sub “Success is falling nine times and getting up ten” ~ Jon Bon Jovi Related: Syntax - error codes InputBox - Prompt for user input Equivalent in PowerShell: ErrorAction and $errorActionPreference © Copyright SS64.com 1999-2016 Some rights reserved
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 http://stackoverflow.com/questions/2202869/what-does-the-on-error-resume-next-statement-do hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges http://stackoverflow.com/questions/6489941/error-in-on-error-statement 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 What does the “On Error Resume Next” statement do? up vote 41 down vote favorite 4 I came to some VBScript examples, and I saw the statement On Error on error Resume Next basically at the beginning of the script. What does it do? vbscript error-handling share|improve this question edited Feb 4 '10 at 20:42 Helen 18.3k44174 asked Feb 4 '10 at 20:18 Omar 3,364114280 4 It is a very powerful, but dangerous bit of syntax. Be very cautious using it. –Nate Feb 4 '10 at 20:22 2 It makes more sense now. After some functions that can end up in error. They have a function called vbscript error handling checkError after them. –Omar Feb 4 '10 at 20:37 add a comment| 6 Answers 6 active oldest votes up vote 56 down vote accepted It basically tells the program when you encounter an error just continue at the next line. share|improve this answer answered Feb 4 '10 at 20:19 David 2,2601523 add a comment| up vote 24 down vote It's worth noting that even when On Error Resume Next is in effect, the Err object is still populated when an error occurs, so you can still do C-style error handling. On Error Resume Next DangerousOperationThatCouldCauseErrors If Err Then WScript.StdErr.WriteLine "error " & Err.Number WScript.Quit 1 End If On Error GoTo 0 share|improve this answer answered Feb 5 '10 at 15:49 Tmdean 6,5002645 add a comment| up vote 19 down vote When an error occurs, the execution will continue on the next line without interrupting the script. share|improve this answer answered Feb 4 '10 at 20:19 Pierre-Alain Vigeant 13.7k44388 add a comment| up vote 8 down vote It means, when an error happens on the line, it is telling vbscript to continue execution without aborting the script. Sometimes, the On Error follows the Goto label to alter the flow of execution, something like this in a Sub code block, now you know why and how the usage of GOTO can result in spaghetti code: Sub MySubRoutine() On Error Goto ErrorHandler REM VB
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 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 Error in On Error statement up vote 2 down vote favorite I am totally not a VBScript developer. But as it usually happens I have to write a small script to check something. It opens Excel, writes something to it and closes it. But that's not the point. The point is that I cannot manage to write code for error handling. This script: Sub Work() On Error GoTo ErrMyErrorHandler Dim objExcelApp Dim wb Dim ws Set objExcelApp = CreateObject("Excel.Application") Set wb = objExcelApp.Workbooks.Add(True) Set ws = wb.Sheets(1) ws.Cells(1,1).Value = "Hello" ws.Cells(1,2).Value = "World" wb.SaveAs("c:\test.xls") objExcelApp.Quit() Exit Sub ErrMyErrorHandler: MsgBox Err.Description, vbExclamation + vbOKCancel, "Error: " & CStr(Err.Number) End Sub Work() gives this error: Line 2 is the line with the On Error statement. What am I doing wrong? Thank you. vbscript share|improve this question asked Jun 27 '11 at 7:45 Grigory 45911024 add a comment| 3 Answers 3 active oldest votes up vote 3 down vote accepted looks like you can not point custom label to error handler in VB Script. You can only use on error goto 0 '(raises exceptions) on error resume next '(ignores exceptions) if you use the second syntax, you can catch occruing exceptions via Err global variable: if Err.Number <> 0 then MsgBox "Exception occured: " & Err.Decscription share|improve this answer edited Jun 27 '11 at 8:43 answered Jun 27 '11 at 7:48 heximal 7,46822149 add a comment| up vote 3 down vote Heximal is correct that VBScript does not allow custom labels for error handlers. Using your example, you'd really be trying to do something like this. Sub Work On Error Resume Next Dim objExcelApp Dim wb Dim ws Set objExcelApp = CreateObject("Excel.Application") Set wb = objExcelApp.Workbooks.Add(True) Set ws = wb.Sheets(1) ws.Cells(1,1).Value = "Hello" ws.Cells(1,2).Value = "World" wb.SaveAs("c:\test.xls") objExcelApp.Quit() If Err.Number <> 0 Then ErrMyErrorHandler End Sub Sub ErrMyErrorHandler MsgBox Err.Description, vbExclamation + vbOKCancel, "Error: " & CStr(Err.Number) End Sub Work() But you should really understand