Sometimes it is useful to be able to have multiple Visual Studio installations on a single PC. I’ve heard some worries about whether this will cause any problems. Personally, I have had Visual Studio 6, Visual Studio .NET and Visual Studio 2003 on one PC. I have also had Visual Studio 6, Visual Studio 2003 and Visual Studio 2005 on another, and Visual Studio 2005 and Visual Studio 2008 on a third. None of these seemed to cause any apparent problems.
From the point of view of the frameworks, there is very little chance of causing problems…
From 1.0 to 1.1 there were some minor behaviour changes.
From 1.1-2.0-3.0-3.5 I’ve never noticed anything that breaks old code.
Each version includes previous versions. There are also service packs for 1.1, 2.0 and 3.0 (all SP1s at time of writing). These are included in the 3.5 installer. 2.0 SP1 does include some new classes which are required for some 3.5 features and new compiler features for the 2008 compilers (such as some Linq stuff) to work, but I am pretty certain it won’t break anything.
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Tags: .NET Framework, Visual Studio