Lawrence Garvin [MVP] wrote:

>
> "Joey" <joeysmall@gmail.com> wrote in message
> news:e76rFZb5FHA.620@TK2MSFTNGP12.phx.gbl...
>> Lawrence Garvin [MVP] wrote:
>>
>>> Just like you did not need to install the .NET Framework v1.0 or the
>>> .NET Framework v1.1 /unless/ you had an application that was written
>>> with .NET technologies, and thus required the Framework, you also will
>>> not need to install the .NET Framework v2.0 /until/ you have an
>>> application that was written with .NET v2 technologies.
>>>
>>
>> I have some applications that require .NET 1.1 to be installed. I
>> uninstalled .NET 1.1 and proceeded to installed .NET 2.0 Framework. The
>> applications that required .NET 1.1 seem to be running fine. So this
>> leads me to belive that 2.0 .NET Framework support apllications that were
>> written for 1.1.
>
> I did some extra research on this question. Your results were very
> enlightening, and forced me to 'review' my understanding of the framework
> environments. While the above post, as written, is accurate, I have posted
> elsewhere with, what I now know to be, an inaccurate assessement of
> framework co-existence rules.
>
> The newer versions of the framework /MAY/ allow applications built with
> the older version... in fact, the MS webpages say... /should/ allow
> applications built with the older versions -- to run without issue.
> However, this is not guaranteed.
>
> I had misunderstood this detail previously.
>
> To that end, yes, your .NET Framework v1.1 applications /should/ run
> without issue on the .NET Framework v2.0; however, there is no guarantee.
>
> Personally, I would recommend keeping the .NET Framework v1.1 installed to
> support v1.1 applications, as would I recommend having the .NET Framework
> v1.0 installed to support v1.0 applications. If the native version of the
> framework is installed, the application will use the native framework to
> run.
>
> Newer versions of the framework -can- be blocked by system administrators
> so that they do not support applications written with the older versions.
> I also learned that older versions of the framework can be 'enabled' to
> support applications built with newer versions of the framework -- though
> whether it will successfully run is an entirely different issue.

Thanks for the information, if I seem to have problems with my applications
that require .NET 1.1, I will suspect it was the removal of .NET 1.1 and
install the Framework plus any additional updates.

--
Joey