Re: IIS DLLHOST and COM

So, when I use Server.CreateObject from an ASP page to instantiate a loca=
l
COM Object, I am using early binding?  I always thought this was late bin=
ding
through IDispatch?


>-- Original Message --
>Date:         Fri, 11 Oct 2002 13:14:50 -0700
>Reply-To:     Technical discussion of VBCOM <[email protected]>
>From:         Doug Doedens <[email protected]>
>Subject: Re: [VBCOM] IIS DLLHOST and COM
>To:           [email protected]
>
>
>HI.
>
>It looks like you are confusing a couple of issues here.
>
>1. you cannot late bind to a COM dll from an ASP page you can only early=

>bind.
>2. you are using COM when you late bind or early bind unless you are
>specifying the second parameter on the createobject call (servername) or=

>using MTS, COM+ to call a dll on another machine.
>3. In regards to IIS, IIS and COM+ (dllHost.exe) they are intertwinded.
>
>when you choose LOW then all of your COM objects are loaded into IIS mem=
ory
>space....If you cause a fatal error you will take down ALL web sites on
IIS
>
>When you choose Mediam.  you com objects are called into an instance of
>DLLHOST.exe that IIS is using for several sites.
>
>When you choose HIGH you will get a separate instance of Dllhost.exe for=

>that web site.  An errors will cause only that site to fail
>
>hope that helps
>
>DOUG
>
>
>-----Original Message-----
>From: Technical discussion of VBCOM [mailto:[email protected]]On=

>Behalf Of Greg Robinson
>Sent: Friday, October 11, 2002 1:05 PM
>To: [email protected]
>Subject: [VBCOM] IIS DLLHOST and COM
>
>
>As I dive deeper into .NET, I am starting to understand COM a little bet=
ter;
>what timing!.  The COM lights are coming on.  There is still one thing
I
>want to make sure I understand though.
>
>When I load an ASP page from IIS and that page late-binds to COM Objects=

>and the site is set to medium pooling, is this 'COM' or DCOM in action
when
>alls are made to the COM Objects?  I have always assumed COM as I have
>always
>looked at DCOM as a way to remote to another machine.
>
>Same question for Low pooling.  I assume this is COM and not DCOM.
>
>
>
>
>
>
>Greg Robinson
>Director of Training and .NET Technologies
>Scribble Software and Training
>www.scribblesoftware.com
>www.scribbletraining.com
>
>You can read messages from the VBCOM archive, unsubscribe from VBCOM, or=

>subscribe to other DevelopMentor lists at http://discuss.develop.com.
>
>You can read messages from the VBCOM archive, unsubscribe from VBCOM, or=

>subscribe to other DevelopMentor lists at http://discuss.develop.com.



Greg Robinson
Director of Training and .NET Technologies
Scribble Software and Training
www.scribblesoftware.com
www.scribbletraining.com

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