Opentextfile On Error Resume Next
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Error Handling In Vbscript Tutorial
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minute: Sign up VBScript — Using error handling up vote 59 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 vbscript on error exit want it to log that 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 2,50611831 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 103 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 DoS
for Help Receive Real-Time Help Create a Freelance Project Hire for a Full Time Job Ways to Get Help Ask a Question Ask for Help Receive Real-Time Help Create a Freelance Project Hire for a Full Time Job Ways vbscript error handling best practices to Get Help Expand Search Submit Close Search Login Join Today Products BackProducts vbscript error handling line number Gigs Live Careers Vendor Services Groups Website Testing Store Headlines Experts Exchange > Questions > If vbscript errors retry or loop? on error resume next vbscript w3schools Want to Advertise Here? Solved If vbscript errors retry or loop? Posted on 2007-07-02 VB Script ASP Visual Basic Classic 1 Verified Solution 21 Comments 2,170 Views Last Modified: 2012-05-05 Hi I am trying http://stackoverflow.com/questions/157747/vbscript-using-error-handling to do something i would class as simple but just cannot find any posts or anything similar to help me. I need to get a vbscript to loop a command if it errors? The error is a permission denied error code 800a0046. Its doing this as i am trying to write to a text file simultaneously. I would like it to retry the command if the user gets this https://www.experts-exchange.com/questions/22670422/If-vbscript-errors-retry-or-loop.html error and then exit once they dont. Or store the result it finds in memory and then write it to the text file when it is free. The code is on a login script you see. Here is my code. ********************************************************************************************************************* Const ForAppending = 8 Dim strC, strUser, objTextFile, strFile, objFSO Set oNet = CreateObject("WScript.Network") set objFSO = CreateObject("Scripting.FilesystemObject") strFile = "\\SERVER\SHARE\Default Printer.txt" strUser = lcase(oNet.UserName) strC = ucase(oNet.ComputerName) Set objTextFile = objFSO.OpenTextFile _ (strFile, ForAppending, True) 'objTextFile.WriteBlankLines(2) objTextFile.WriteLine strUser & " " & strC & " " & GetDefaultPrinter objTextFile.WriteBlankLines(1) objTextFile.Close Function GetDefaultPrinter sComputer = "." Set oWMIService = GetObject("winmgmts:\\" & sComputer & "\root\cimv2") Set colItems = oWMIService.ExecQuery("Select * from Win32_Printer",,48) For Each oItem in colItems If (oItem.Attributes And 2^(3-1)) = 4 Then sDefault = oItem.Name Exit For End If Next GetDefaultPrinter = sDefault End Function ********************************************************************************************************************** 0 Question by:BidwellsIT Facebook Twitter LinkedIn Google LVL 65 Active 1 day ago Best Solution byRobSampson Hi, it looks like your problem is occurring upon trying to Open the file, not write to it. Using your example of testing this with one script that continually accesses the file, and another that tries Go to Solution 21 Comments LVL
Forums Links DISCUSSIONARCHIVES DISCUSSIONARCHIVES2 DISCUSSIONARCHIVES3 BLOG We didn't realize the site was so popular. Other Stuff How To Use On Error http://www.powerasp.net/content/new/on-error-resume-next.asp Resume Next Often when using ASP or Active Server Pages with VBScript you will find it necessary to check for errors when you do certain things that may fail and then handle it accordingly. Things like opening a database connection or writing to a text file come to mind. Generally if an error is encountered in your .asp file, the processing of your script stops and an error message on error is returned to the browser. If you want to continue processing your page even if an error is encountered, include the following line at the beginning of your .asp file: <% On Error Resume Next %> That being said just ignoring errors in your code is not a very good idea. What you really want to do is handle the error in some way. The example below opens on error resume a database connection and shows you how to trap a potential error and do whatever you want because of it. In this case we are simply displaying the error. <% ConnectionString = "DBQ=c:\inetpub\wwwroot\mysite\data\mydatabase.mdb;Driver={Microsoft Access Driver (*.mdb)};" '*** This code checks the ConnectionString info you entered and reports back the error code if it is not ok Err.Clear On Error Resume Next Set ConnPasswords = Server.CreateObject("ADODB.Connection") ConnPasswords.Open ConnectionString If Err.Number <> 0 Then Response.Write (Err.Description& "
") Response.Write("This means there is most likely a problem with the" & vbCrLf) Response.Write("""ConnectionString"" info that you specified.
" & vbCrLf) Response.End End If On Error GoTo 0 %> We put the "On Error GoTo 0 at the end because that will essentially end the "on error resume next" That is something you want to do so any later errors in your application do not get ignored without you knowing about it. Below is another example. In this example our application logs user info in a text file when they sign in to a site. We add "On Error Resume Next" here simply so no nasty error message come up if by chance write permissions to the text file do not ex