Performance penalty for using Classes?

Hello.

Are there any performance considerations, and any other considerations for
that matter, when using the Class statement in VBScript, especially as it
pertains to writing ASP pages (IIS 5)?

Thanks in advance,

Mike

lukezhan
Thu Sep 18 02:12:48 CDT 2003

HI Mike,

I think Class statement wouldn't have much impact on the ASP's performance.
Instantiating a class is slightly faster than instantiating a component
because you use different instantiation approaches. To instantiate a
component, you must use the CreateObject method. This method requires the
language parser to pass through the system's Registry and the COM
infrastructure, which adds processing time. To instantiate a class, you use
the New keyword, which Microsoft added in VBScript 5.0. This keyword
doesn't require the language parser to pass through the system's Registry
and the COM infrastructure, so VBScript classes enjoy the advantage of
better performance.

For more inforamtion on VBScript 5.0, you may refer to this article:

http://msdn.microsoft.com/library/en-us/dnclinic/html/CLINICK_IE5.asp

Luke
Microsoft Online Partner Support

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