Question

Try Catch in ASP

Asked by: stevedave

Does ASP provide the capability to do a Try Catch Finally.  I know ASP.net has it, buy I am using just .asp pages.  I can put in the following code and this is the error I get:

<%
...
Try
...Some database code here

Catch SQLexc as sqlexception
    Response.write(SQLexc)
...
Finally
...Close database connections
%>

At the catch, I get the following error:
_________________________________________
Error Type:
Microsoft VBScript compilation (0x800A0401)
Expected end of statement

Catch SQLexc as sqlexception
------------^
_________________________________________

This may be a simple answer of "No, you can't use try-catch in ASP" or maybe I am coding it wrong.

Nate

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Asked On
2004-06-27 at 07:20:38ID21039526
Tags

try

,

catch

,

asp

Topic

Active Server Pages (ASP)

Participating Experts
4
Points
50
Comments
13

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Answers

 

by: fritz_the_blankPosted on 2004-06-27 at 07:22:53ID: 11409957

Try / Catch is not supported in VBScript. Perhaps with JScript you might be able to.

Fritz the Blank

 

by: alorentzPosted on 2004-06-27 at 07:24:41ID: 11409965

"No, you can't use try-catch in ASP" :)

 

by: fritz_the_blankPosted on 2004-06-27 at 07:35:55ID: 11410045

 

by: alorentzPosted on 2004-06-27 at 07:52:00ID: 11410138

Yes, but from the error message, appears to be using VBScript...

'''''''''
Microsoft VBScript compilation
'''''''''

Not an easy jump from VBScript to Jscript...for most users on this forum.

 

by: alorentzPosted on 2004-06-27 at 08:04:23ID: 11410201

But of course you're right, if JScript is an option...

 

by: fritz_the_blankPosted on 2004-06-27 at 08:12:01ID: 11410254

If you look at my first post, that is what I said--not possible with VBScript, but may be possible with JScript.

I should have been clearer--I realize the example offered is in VBSCript, and try / catch is not supported with that language. For the sake of being complete-- the title of the question was "Try Catch in ASP"--I was pointing out that try / catch is supported with JScript and ASP.

FtB

 

by: D_M_DPosted on 2004-06-27 at 08:56:46ID: 11410538

In ASP you need to turn on error handling by using one of the following...

On Error Resume Next  -  keep executing script / don't stop on error
On Error Goto 0

Or add "On Error Resume Next" before your code and then at the end of your script check for errors like this...

If Err.Number <> 0 Then
   ' Error occured / check which error / error handling goes here
End

Good Luck...

--------
D_M_D

 

by: stevedavePosted on 2004-06-27 at 20:31:58ID: 11412751

How do you integrate the Jscript into the vbscript?  Never used Jscript.

 

by: kaliyappan_kPosted on 2004-06-27 at 23:24:09ID: 11413311

You can have both jscript and vbscript on the same page

To integrate jscript into a vbscript page, use the following
<%@ language="vbscript" %>
<Script language="jscript" runat="server">
function dispHello()
{
  return "hello";
}
</script>

<%
response.write(dispHello())
%>

The above code defines a function in jscript and calls it from vbscript.

Remember jscript is case sensitive, and if you know c or java its easier to learn jscript.

and it supports try .. catch.

Hope this helps

Cheers
Kaliyappan

 

by: D_M_DPosted on 2004-06-28 at 07:15:43ID: 11415838

You don't need to use both JavaScript and VBScript.  You can use just VBScript.  Just add "On Error Resume Next" where you would add the "Try" statement.  Then add your error check where you would add the "Catch" statement like below...

<%
Dim i
' Turn on error Handling
On Error Resume Next


For i = 0 to 10
   ' SOme COde Here
Next

' Error Handler
If Err.Number <> 0 Then
   ' Error Occured / Trap it
End If

%>

--------
D_M_D

 

by: fritz_the_blankPosted on 2004-06-28 at 08:00:45ID: 11416270

I wasn't suggesting that you mix the two languages--just that Try / Catch is available on with JScript not VBScript.

FtB

 

by: stevedavePosted on 2004-06-28 at 10:42:49ID: 11418168

This may be dumb, but when you guys refer to JScript, are you really saying JavaScript?  I know JavaScript.

 

by: fritz_the_blankPosted on 2004-06-28 at 10:55:18ID: 11418310

It is not quite the same:

JScript is a server-side language often used with ASP. JavaScript is most often a client-side scripting langauge.

The former is a more robust langauge with greater capabilities.

http://www.faqts.com/knowledge_base/view.phtml/aid/1380/fid/53
http://www.hostbyte.com/webhosting-help/83.php

20120131-EE-VQP-002

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