Opening dll's in another framework

I'm wondering how I would go about opening a dll that's made using the .net 2.0 c# framework.

Whenever I open up the DLL it shows up under the .Net 4.0 Framework category, and I can't find an option to change the framework version

7 comments

Good point.

But you should be able to open .NET 2.0 assemblies even it "looks not good" that they're listed under .NET Framework 4.0 ;)

Opened .NET Compact Framework 1.0 assemblies successfully using dotPeek.

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Hello Harald-René Flasch,

But what about assemblies in the GAC ? It seems thant the assemblies do not appear in the list.

Have I to extract them from the GAC to open them in DotPeek ?

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When using File | Open from GAC (or Ctrl+Shift+O) all assemblies from all versions (1.0 - 4.0) are displayed in the list ...
(BTW: Somethimes I get confused with the thread title: "Opening dll's in another framework" --> should be "Opening dll's in another framework version"? When hearing or reading "another framework" I assume Mono etc.)

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Not in the build I just tried (1219) - its only showing .NET 4.0 DLLs from the GAC.

I can't even load the pre-4.0 ones manually from C:\Windows\Assembly since they are virtual, you have to get them from C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\ or thereabouts.

Cheers
Simon

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Thats a bit strange. Just used build 1219 and opened System.Xml, Version 1.0.5000.0 from GAC without any problems.
Are you sure that you have .NET Framework 1.0, 1.1, 2.0, 3.5 also installed?

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Just installed the newest build 1.0 EAP Build 1.0.0.2545:

https://byfiles.storage.live.com/y1pqFxBtPpBsu1b82j3nsfjrzsDpwTb84qvaSFIGm1wVbjDXZDepaYxM2R5oaRZeG5wvau69_KGWg1rAT28pzq_7g/dotPeek-Compared2-Refelector.png?psid=1

The reason for that seems "missing" Framework vesion:
https://byfiles.storage.live.com/y1pqFxBtPpBsu0bsE8HJXGtriGk9aIyFvjIszSgk6piNYpZAE32Pe9bbQprr1sbxqtdJmfI8COagTT1dzLck-Em_A/dotPeek-Compared2-Refelector-InstalledFrameworks.png?psid=1

So dotPeek seems to work correctly now since it displayes the closed Framework version  (2.0 --> 3.5). Since The Framework version are backward compatible (2.0 assembly will run/work on a machine with only .NET 3.5 installed).

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