Asp On Error Resume 0
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Classic Asp On Error Resume Next Example
Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask asp on error goto 0 Question 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 asp on error goto up using “on error resume next” in classic ASP, and how to handle errors up vote 6 down vote favorite Good day all, I would like to ask a thing about on error resume next let's assume we have a loop to navigate through a recordset like: Do while not rs.EOF query = "UPDATE ...." conn.execute(query) rs.movenext loop i would like to
On Error Resume Next Example
be sure the UPDATE is going good, and i would like to check if there is some problems, so I have put a debugging features in the code like: Do while not rs.EOF query = "UPDATE ...." on error resume next conn.execute(query) If Err.Number <> 0 Then Response.write(Err.Number) response.write("
") response.write(Err.description) response.write("
") response.write(query) response.write("
") end if on error goto 0 rs.movenext loop the question is : during a loop, if it encounters an error, the next cycle will the error be there (and so triggers again the error block) ? or on error goto 0 will clear the Err object? in other words, will it works as a error handling? asp-classic vbscript error-handling share|improve this question edited Jul 3 '13 at 10:51 Alex K. 106k16146194 asked Jul 3 '13 at 10:43 Matteo Bononi 'peorthyr' 76451749 add a comment| 3 Answers 3 active oldest votes up vote 5 down vote accepted VBScript resets the error on goto 0: on error resume next i = 1 / 0 WScript.echo( err.number ) '' prints 11 (div by 0) on error goto 0 WScript.echo( err.number ) '' prints 0 (no er
Forums Links DISCUSSIONARCHIVES DISCUSSIONARCHIVES2 DISCUSSIONARCHIVES3 BLOG We didn't realize the site was so popular. Other Stuff How To Use On Error Resume Next Often when using ASP or on error goto 0 Active Server Pages with VBScript you will find it necessary to check for errors when on error goto 0 vba you do certain things that may fail and then handle it accordingly. Things like opening a database connection or writing to a text
Asp Error Number
file come to mind. Generally if an error is encountered in your .asp file, the processing of your script stops and an error message is returned to the browser. If you want to continue processing your page http://stackoverflow.com/questions/17445890/using-on-error-resume-next-in-classic-asp-and-how-to-handle-errors 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 a database connection and shows you how to trap a potential error and do whatever you want because of it. http://www.powerasp.net/content/new/on-error-resume-next.asp 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 exist. <% Set ObjMyFile = CreateObject("Scripting.FileSystemObject") Err.Clear On Error Resume Next LogFileName = "aspprotect.log" LogFileDirectory = "c:\somedirectory" 'Open Text File.. If doesn't exist create it and append to it .. If exists just append to it Set WriteMyData = ObjMyFile.OpenTextFile(LogFile
Activity -Unanswered Threads -Most Active Threads -Most Read Threads ASP Classic KB -New & Updated -Most Read -10 Min Quickstarts -Recent Comments Tech Articles ASP Classic https://www.prestwoodboards.com/ASPSuite/KB/Document_View.asp?QID=100411 News Errors Library File Library Resource Links ASP CLASSICTIDBITS: All as FlashCards Code Snippets FAQs Tips ASP Classic To/From To/FromCODEGuides ASP Classic To/From ASP Classic Study Test PRESTWOODCERTIFIED ASP Classic Study http://www.herongyang.com/VBScript/Error-Handling-On-Error-GoTo.html Test ASP Classic Store PRESTWOODSTORE Store Home Buy ASP Classic Items Members Only MEMBERSONLY ASP Classic Member List Member Only KB Posts ASP Classic Content Stats Random Article Random MB Thread on error Random Tidbit Random CrossRef Code Prestwood eMagazine October Edition Subscribe now! It's Free! Enter your email: ► KB ► Website Scri... ► ASP Classic ► Language Basics Print This From the January2009 Issue of Prestwood eMag ASP Classic Language Basics:Using On Error Resume NextBy Mike Prestwood Posted 10 years ago on 11/15/2006 and updated 7/2/2008 Take Away: You can asp on error use "On Error Resume Next" to suppress errors and "On Error Goto 0" to stop suppressing errors. Tags: ASP , On Error Resume Next , trap errors , CDO , send email KB100411 ASP's ability to trap for errors is pretty weak compared to other languages. However, you can trap for errors, suppress errors, and stop suppressing errors. When an error is found, you can also handle it. Suppressing Errors To start trapping errors, add the following line:On Error Resume Next This will suppress all errors for the duration of the script. For example, normally the following code would cause the death of your code with a division by error message:Dim xx = 1/0 However, you can suppress the error as follows:On Error Resume NextDim xx = 1/0 The above code will cause NO error at all. Capture Error But Keep Going While trapping for errors, you can handle the error by inspecting the Err object. The following code snippet handles our division by zero error by displaying a message but the script keeps going:On Error Resume NextDim xx = 1/0If Err.Number <>
a tutorial example on how to use 'On Error GoTo 0' to turn off the error handling flag in a procedure to catch the first runtime error. As you can see from the previous section, my last VBScript example reported the last runtime error, not the first one. If you want to catch the first runtime error is a large section of code, you need to: Enter the "On Error Resume Next" statement in the main code to turn on the error handling flag for the main code. Put that section of code into a new subroutine procedure. Enter the "On Error Goto 0" statement in the new procedure to turn off the error handling flag for that procedure. Check the Err.Number property right after calling that procedure. Here is the modified VBScript example to catch the first runtime error in a section of code:
Run this modified example code in IE, you will get: There is no error at this time. Before statement: x = 1/0 A runtime error has occurred: Err.Number = 11 Err.Description = Division by zero Err.Source = Microsoft VBScript runtime error What heppened was: When the first runtime error occurred on statement, x = 1/0, in the CodeToBeMonitored() procedure, execution stopped for that procedure, because the error