Error Handling For Vbscript
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Vbscript Error Handling Example
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Vbscript Err Object
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Vbscript On Error Resume Next
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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 vbscript msgbox this site About Us Learn more about Stack Overflow the company Business Learn error handling in vbscript tutorial more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question vbscript error handling best practices x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up VBScript https://technet.microsoft.com/en-us/library/ee692852.aspx — Using error handling up vote 58 down vote favorite 13 I want to use VBScript to catch errors and log them (ie on error "log something") then resume the next line of the script. For example, On Error Resume Next 'Do Step 1 'Do Step 2 'Do Step 3 When an error occurs on step 1, I want it to log that http://stackoverflow.com/questions/157747/vbscript-using-error-handling error (or perform other custom functions with it) then resume at step 2. Is this possible? and how can I implement it? EDIT: Can I do something like this? On Error Resume myErrCatch 'Do step 1 'Do step 2 'Do step 3 myErrCatch: 'log error Resume Next vbscript error-handling share|improve this question edited Oct 1 '08 at 14:13 asked Oct 1 '08 at 14:04 apandit 2,50111831 1 Dylan's response is about as good as VB gets in the Error handling department. This is why I always used Javascript when I could get away with it. –wcm Oct 1 '08 at 14:23 add a comment| 2 Answers 2 active oldest votes up vote 102 down vote accepted VBScript has no notion of throwing or catching exceptions, but the runtime provides a global Err object that contains the reuslts of the last operation performed. You have to explicitly check whether the Err.Number property is non-zero after each operation. On Error Resume Next DoStep1 If Err.Number <> 0 Then WScript.Echo "Error in DoStep1: " & Err.Description Err.Clear End If DoStep2 If Err.Number <> 0 Then WScript.Echo "Error in DoStop2:" & Err.D
error handling On Error goto 0 - Disable error handling Error properties: err.Number (default) err.Source err.Description Examples http://automated-360.com/vbscript/error-handling-in-vbscript/ In the examples below - replace the 'code goes here' line with your VBScript commands. Example 1) Trap error handling 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 vbscript on error 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
» Error Handling in VBScript Error Handling in VBScript 3 Error handling is the way for responding to occurrence of some unexpected situation that arrives during the computation. In automationTesting using software tools which execute tests without ma... More testing, these unexpected situation can be like objects of application getting changed or some mathematical manipulation etc. For handling such situation Visual Basic Script Edition (VBScript) provides us some of the methods. The details and usage of these methods are as follows: On error resume next This statement specifies that when any run time error occurs at particular line in script the control goes to the next line following the statement where the error as occurred. For example: We are performing a division by zero, and if such situation occurs we dont want script to be interrupted. So we will be adding “On error resume next” statement at the top of the script. On error resume next
Division=100/0
If Div=0 then
Msgbox “Pass”
Else
Msgbox “Fail”
End if On error go to 0 Disables any enabled error handler and reset it to nothing Err object Err object is the intrinsic object with global scope means there is no need to create the instance of it for accessing the various methods of it.The details of all the methods of err object can be find in the below table: Err Properties Details Number Returns the integer value telling the type of the error occurred Description Gives the reason for the occurrence of the error Source HelpFile HelpContext Err Methos Details Clear Helps to reset the error handler to nothing once the error has been handled. Raise Lets take the example of division by zero again.
'Call the division function
call division
Function division()
on error resume next
'divide by zero
z=100/0
' Report the error occured. You can see the error number and description in msgbox
If Err.number <> 0 then
Msgbox “Error Number” + Err.Number
Msgbox “Error Description” + Err.Description
'disables error handling
on error goto