I'm on a team that's currently building a MOSS 2007 based application (which relies on .NET 2), and we'd like to leverage the Entity Framework v4 (which relies on .NET 4).
Is this possible?
+3
A:
Although I haven't tried, my guess is that it's not possible. In order to use .net 4.0 assemblies, the apppool running your moss site would have to be upgraded to the 4.0 version of asp.net. After that, version of system.web and other assemblies will change and I think that moss will simply stop working. But hey, it's just my guess. You can always try it out.
klausbyskov
2009-12-11 17:16:27
+5
A:
The 4.0 version of .Net has a new CLR etc.
Even SP2010 does not support .net 4.0 (yet).
Colin
2009-12-11 22:30:26
+1 on the 'yet' ;)
F.Aquino
2009-12-11 22:52:52
It's bound to happen seeing as VS2010 is going to be the main dev yool for sharepoint. It might take a service pack though :-D.
Colin
2009-12-12 00:21:23
As it's a new CLR, I'm willing to say that SP2010 will never support it.
Michael Stum
2009-12-12 00:22:57
What's your reason for saying it will never be supported? SP2010 is in beta 1 right now.
John Saunders
2009-12-12 00:23:57
They only way see this actually working, IMO, is to have a 4.0 pool run mss2010 (and that is ALOT of backwards compat-sauce) as said by klaus
F.Aquino
2009-12-12 01:46:10
Exactly, it's in Beta, so I doubt that they'll change it over to .net 4.0 CLR. Keep in mind that if they make a change like that, they have to test each and every part for compatibility. It's not just "recompile and ship", but it's to make sure there are no breaking changes. With a codebase that size, I believe that this is not going to happen. Adding .net 4 Support with a Service Pack could break their customers custom solution, and enterprise products don't do that usually. So I don't think we'll see .net 4 support in SP2010 ever.
Michael Stum
2009-12-14 19:55:27
A:
I don't know why people are saying here that it is impossible. If you install .net framework 4.0 on your SharePoint server you will be able to acces the runtime of .net 4.0 to use it in your own code. Of course, the SharePoint code itself will still be running under 2.0, but 4.0 is just an extension of 2.0.
At this moment it's possible to use 3.5 code on your SharePoint 2007 server to use AJAX, so I don't see why 4.0 should be a problem.
KoenVosters
2009-12-14 10:13:14
.NET 2/3/3.5 all ran on the same CLR. .NET 4 has a new CLR, which makes it different.
mattblodgett
2009-12-14 13:27:31
I wasn't aware that there will be a new CLR, thanks for clarifying that.
KoenVosters
2009-12-29 12:54:52