Hello,
I have a VS2008 web project with a EF1 datamodel. Now I have converted this to a VS2010 project with .Net 4. My question is about the Entity Framework. How can I see what version of EF it is. Or how can I make sure it is EF 4?
A:
You can look in project references on the version of System.Data.Entity.dll.
Albin Sunnanbo
2010-10-28 10:58:46
Thanks for the answer!
karl
2010-10-28 12:41:37
A:
Look at your 'System.Data.Entity' reference version, if it's 3.5.0.0, then it's EF1. If it's 4.0.0.0, then your using EF4.
Guilherme Oenning
2010-10-28 10:59:10
Thanks for yor answer. So if I open a VS2008 project with VS2010 and this is converted with success (.Net 4 and System.Data.Entity is 4.0...) my data model is converted too? Or do I need to rebuild my nodel from the database?
karl
2010-10-28 12:40:21
I'm not sure, but I don't think it'll convert automatic. Anyway, why don't you test it? Make a backup, go ahead and tells us the result. I think EF4 has backward compatibility with EF1.
Guilherme Oenning
2010-10-28 13:23:15
A:
There are really two questions here:
- What is the EF assembly version? In a (correct) .NET 4 project, it can really only be 4.
- What is your EF model version? Perhaps surprisingly, the EF 4 assemblies support both EF 1 and EF 4 models at runtime.
When you upgrade a VS 2008 project to .NET 4, it will upgrade the EDMX to an EF 4 model, as well. But if you skipped this or just want to confirm it's right, look at the xmlns elements in the EDMX.
- For CSDL, EF 4 is "http://schemas.microsoft.com/ado/2008/09/edm"; EF 1 is "http://schemas.microsoft.com/ado/2006/04/edm".
- For SSDL, EF 4 is "http://schemas.microsoft.com/ado/2009/02/edm/ssdl"; EF 1 is "http://schemas.microsoft.com/ado/2006/04/edm/ssdl"
- For MSL, EF 4 is "http://schemas.microsoft.com/ado/2008/09/mapping/cs"; EF 1 is "urn:schemas-microsoft-com:windows:storage:mapping:CS"
Craig Stuntz
2010-10-28 12:50:11