November 6, 2009, Newsletter Issue #76: Error handling in asp
Tip of the Week
When your code bombs and displays a "Page can't be reached" or and other error page, it's embarrasing. Here's a more elegant way to handle it. Use "On Error Resume Next" and "On Error Goto 0" EFFECTIVELY. First create an error page yourself - one that not only looks better than the standard error page, but that also tells the user something usable.. and include a "go back" button if necessary.
To use the above, write:
On Error Resume Next
...on the line ABOVE where the error would possibly happen, for instance, just before a database call.
Then on the line immediately after the offending line, write:
If err.number code block) write:
response.write "Error: " & request.querystring("err") & " please contact your administrator, or to try again, click here" (originalpage.asp is the page you had the error).
Microsoft has a good resource on this topic.
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