.NET 2.0 and compatibility

This is the dilemma that in these days every customers has: should I install .NET 2.0 on our machines? Our .NET 1.1 applications could have problems?

Sometimes I have difficult to answer and keep my customers in peace... but finally today the official answer is well summarized on a post from Kirk Allen Evans that I report here:

These are the official behaviours of applications under different configurations of the .NET Framework:

Application typeComputer with 1.1Computer with 2.0Computer with 1.1 and 2.0
1.1 stand-alone application (Web or Microsoft Windows client)Loads with 1.1Loads with 2.0Loads with 1.1
2.0 stand-alone application (Web or Microsoft Windows client)FailsLoads with 2.0Loads with 2.0
1.1 add-in to a native application (such as Office or Internet Explorer)Loads with 1.1Loads with 2.0Loads with 2.0 unless the process is configured to run against 1.1
2.0 add-in to a native application (such as Office or Internet Explorer)FailsLoads with 2.0Loads with 2.0

Now there's absolutely no reasons for not installing the new .NET 2.0 environment I think...

Print | posted on Tuesday, November 15, 2005 10:47 PM

Comments on this post

# re: .NET 2.0 and compatibility

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Unless you have situation like me.
8 apps written in 1.1 as embedded Internet Explorer controls. After installing 2.0, 3 of them don't even start. And the only answer from Microsoft was: 'this is by design':
http://lab.msdn.microsoft.com/productfeedback/viewfeedback.aspx?feedbackid=4131ebf0-e6fd-42de-a8b3-b369934db258
Left by SeeR on Nov 16, 2005 4:37 AM

# re: .NET 2.0 and compatibility

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Thanks Seer, this is really an interesting feedback to remember. However, I can't believe that this is "by design" and nothing could be done to solve this noise...
Left by Stefano Demiliani on Nov 16, 2005 5:50 AM

# .NET 2.0 and compatibility (part II)

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Left by STEFANO DEMILIANI WeBlog on Nov 16, 2005 12:11 AM

# .NET 2.0 and compatibility (part II)

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Left by STEFANO DEMILIANI WeBlog on Nov 16, 2005 2:19 PM

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