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.NET Forum / ASP.NET / General / May 2008

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.NET 3.5 install questions

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Cirene - 21 May 2008 15:24 GMT
On our server we have .NET 1.0, 1.1 and 2.0 ASP.NET websites.

I am creating a .NET 3.5 website.

If my network guy installs the 3.5 FW, will the older apps still run ok?

Is 3.5 fully backwards compatible with 1.0, 1.1 and 2.0 ASP.NET web apps?

Thanks!
Cowboy (Gregory A. Beamer) - 21 May 2008 16:54 GMT
The main point of contention is extra stuff added on top.

If you are using AJAX, for example, you might have some problems until you
ujpdate your web.config. The 2.0 bits will be pointed to a version 1.06.###
(forget the entire number), while the 3.5 bits point to 3.5.0.0 version. If
you change version in the web.config, you should be fine.

That is your biggest danger, from my experience.

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> On our server we have .NET 1.0, 1.1 and 2.0 ASP.NET websites.
>
[quoted text clipped - 5 lines]
>
> Thanks!
Mark Rae [MVP] - 21 May 2008 16:54 GMT
> If my network guy installs the 3.5 FW, will the older apps still run ok?

Yes.

> Is 3.5 fully backwards compatible with 1.0, 1.1 and 2.0 ASP.NET web apps?

That's not quite how it works. Installing .NET 3.5 doesn't overwrite or
uninstall the previous versions - they all co-exist quite happily, as you
will be able to tell from the folder structure.

The older apps won't care about any other version of the framework than the
one for which they were compiled...

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Mark Rae
ASP.NET MVP
http://www.markrae.net

Cirene - 21 May 2008 19:04 GMT
Thanks.  So .NET 3.5 will install side by side with older frameworks
installed on the server?

>> If my network guy installs the 3.5 FW, will the older apps still run ok?
>
[quoted text clipped - 8 lines]
> The older apps won't care about any other version of the framework than
> the one for which they were compiled...
Juan T. Llibre - 21 May 2008 19:10 GMT
re:
!> .NET 3.5 will install side by side with older frameworks installed on the server?

Yes, it will.

Juan T. Llibre, asp.net MVP
asp.net faq : http://asp.net.do/faq/
foros de asp.net, en español : http://asp.net.do/foros/
======================================
> Thanks.  So .NET 3.5 will install side by side with older frameworks installed on the server?
>
[quoted text clipped - 8 lines]
>>
>> The older apps won't care about any other version of the framework than the one for which they were compiled...
Mark Rae [MVP] - 21 May 2008 19:17 GMT
[top-posting corrected]

>> they all co-exist quite happily
>
> So .NET 3.5 will install side by side with older frameworks installed on
> the server?

:-)

Yes.

Signature

Mark Rae
ASP.NET MVP
http://www.markrae.net


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