How to correctly use "On Error Resume Next" in ASP

Hello experts,

Currently I have a custom 500 error page set up in IIS that logs errors.  However whenever an error occurs the page stops processing and the 500 error page is loaded.  I would like to instead use the "On Error Resume Next" method, but I having some problems.

First here is the code from my 500 error page that prints out the error details.  This works correctly - whenever there is a 500 error it prints out the error description, the line, and the column:

Set ASPErr = Server.GetLastError()
response.write("Line: " & ASPErr.Line & "<br>")
response.write("Column: " & ASPErr.Column & "<br>")
response.write("Description: " & ASPErr.Description & "<br>")

Here is the code I am using to implement "On error resume next".  This code is not working.

On Error Resume Next
'database request
If Err.number <> 0 then
    Set ASPErr = Server.GetLastError()      
    response.write("Line: " & ASPErr.Line & "<br>")
    response.write("Column: " & ASPErr.Column & "<br>")
    response.write("Description: " & ASPErr.Description & "<br>")
End If

This code does not work correctly.  It always returns 0 as the error line and -1 as the column number, no matter where the error occurs.  It also does not return the description.

Can anyone tell me what I am doing wrong here?  Is it a mistake in my code?  Why does it work correctly on the custom 500 error page but incorrectly when using "On Error Resume Next"?

Thanks in advance!