Asp Response.write Error
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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 this site About Us asp on error goto Learn more about Stack Overflow the company Business Learn more about hiring developers asp on error goto 0 or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack asp error number 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 Is try-catch like error handling possible in ASP classic asp throw exception Classic? up vote 26 down vote favorite 9 What options are there in ASP Classic for error handling? For example: I'm using the Mail.SendMail function but when switching on the testing server it doesn't work, which is normal. I want to test if mailing is possible, if not then continue and/or show a message. Any ideas? error-handling asp-classic share|improve this question edited Nov 19 '11 at 2:52
Classic Asp Global Error Handling
casperOne 57.9k10126202 asked Jan 23 '09 at 11:08 Sander Versluys 22.9k186785 add a comment| 8 Answers 8 active oldest votes up vote 37 down vote accepted There are two approaches, you can code in JScript or VBScript which do have the construct or you can fudge it in your code. Using JScript you'd use the following type of construct: In your ASP code you fudge it by using on error resume next at the point you'd have a try and checking err.Number at the point of a catch like: <% Dim i ' Turn on error Handling On Error Resume Next 'Code here that you want to catch errors from ' Error Handler If Err.Number <> 0 Then ' Error Occurred / Trap it On Error Goto 0 ' But don't let other errors hide! ' Code to cope with the error here End If On Error Goto 0 ' Reset error handling. %> share|improve this answer edited Oct 17 '12 at 11:42 Shadow Wizard 49.1k1385130 answered Jan 23 '09 at 11:19 Wolfwyrd 10.2k42861 2 +1. Javascript. If you need it, forget VBscript use javascript. –Anthony
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
Ado Error 2147467259
ASP or Active Server Pages with VBScript you will find it necessary to check adodb.connection errors for errors when you do certain things that may fail and then handle it accordingly. Things like opening a database connection or on error resume next vbscript 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 is returned to the browser. If you want to http://stackoverflow.com/questions/472558/is-try-catch-like-error-handling-possible-in-asp-classic 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 a database connection and shows you how to trap a potential error and do http://www.powerasp.net/content/new/on-error-resume-next.asp 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 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 a
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Tutorials MSDN Communities Hub Official Docs Security Stump the SQL Guru! XML Info Information: Feedback Author an Article Published: Monday, February 12, 2001 Generating Sensible Error Messages Using Err.Raise By Zack Jones Okay, I'll admit it, if there's one area where my ASP scripts are lacking: it's in the area of error checking. I've looked at the Err object included with VBScript but have been really frustrated with it's seemingly lack of information. (For more information on the Err object be sure to read: Error Handling in ASP!) Consider this snippet of code:
<% Option Explicit Dim Conn Dim strSQL Set Conn = Server.CreateObject("ADODB.Connection") 'this DSN does not exist Conn.Open "foo" '...If you run the above script (without having a DSN named foo created) you'll get the following error: Microsoft OLE DB Provider for ODBC Drivers error '80004005'
[Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
/dmsms/etest.asp, line 6 Fine, I can deal with that. While the error message is anything but pretty or profoundly descriptive, I do know that I need to fix something that's wrong on line 6 of the script. So I'll load it into the editor, fix it and then try running it again. If needed I'll repeat this cycle until I have a script that works. Now consider a script like this one that has Error checking turned on:
<% Option Explicit On Error Resume Next Dim Conn Dim strSQL Set Conn = Server.CreateObject("ADODB.Connection") 'this DSN does not exist Conn.Open "foo" '... more code ... If Err.Number <> 0 then Response.Write("Error Number -> " & Err.Number) Response.write("Viewing the above script through your b
Error Source -> " & Err.Source) Response.Write("
Error Desc -> " & Err.Description) Err.Clear End If %>