Does anyone know of a work around to create foreign keys in the VS2010 Entity Framework designer for .Net 3.5?
Ik can make the assocation but not select the foreign key, can it be done from code?
Thanks.
No, you can't. Exposing foreign keys in your model is a feature which has been added in .NET 4.0. It's not available in .NET 3.5 SP1 (or earlier). That's the reason why this option is disabled in the designer when you target .NET 3.5.
Related
I have just started using VS 2013 and I would like to know whether the newly release entity framework 6.0 designer in Visual Studio 2013 support multiple result set returned from a stored procedure?
The designer in VS2013 does not support importing stored procedures returning multiple resultsets to the model. You would have to manually modify the edmx - similarly to what you would have to do in the designer from VS2012.
I was developing MVC3 web site using VS2010 and for model generation i used EF 5.0 and for database generation i used Entity Designer Database Generation Power Pack (model first approach).
Now i m shifting from VS2010 to VS2012 for same project and need to edit my entity model so i added new entity in my edmx file and i'm going to generate my database using my entities then it is showing me error generate migration t-sql and deploy.xaml not exits .
I'm googling for this but not yet get solution.
How to resolve this issue ?
Entity Designer Database Generation Power Pack is not supported on VS2012.
I created a project in the express edition of VS 2012, it was MVC4 using EF5 Model First with enums. I get this error when trying to run the same project now in VS 2010.
Error 1 Error 5: The element 'Schema' in namespace 'http://schemas.microsoft.com/ado/2008/09/edm' has invalid child element 'EnumType' in namespace 'http://schemas.microsoft.com/ado/2008/09/edm'. List of possible elements expected: 'Using, Association, ComplexType, EntityType, Function, EntityContainer' in namespace 'http://schemas.microsoft.com/ado/2008/09/edm' as well as any element in namespace '##other'.
It seems VS2010 does not support enums? But I have checked the EF version being used and it is still v5... so I am confused.
Any ideas?
Entity framework will reference 4.4 when you're targeting .NET 4.0 with vs 2010.
The 4.4 comes from the assembly version of EntityFramework.dll when
you install EntityFramework 5.0 into a project that targets .NET
Framework 4.0. This is merely a side effect of how the runtime loads
and binds to assemblies, and in no way reflects the version of the
product.
for more information check There is no such thing as Entity Framework 4.4
Compatibility
Some features are only available when writing an application that
targets .NET 4.5. This includes enum support, spatial data types,
table-valued functions and the performance improvements. If you are
targeting .NET 4.0 you still get all the bug fixes and other minor
improvements.
For more information check EF5 Release under compatibility section.
I hope this will help to you.
If it possible to use table valued functions in an EDMX with Entity Framework 5 RC / Visual Studio 2010?
I cannot see the option in the EDMX designer, I have a feeling that the designer is in .net 4.5? Are my suspicions correct? Or perhaps in Visual Studio 11?
I'm not really in a position to be able to upgrade our project to .net 4.5 yet, is there another way of using table valued functions (perhaps modifying the edmx by hand?).
ADDITIONAL INFO:
This blog post on msdn helps confirm the incompatibility:
Some features are only available when writing an application that
targets .NET 4.5. This includes enum support, spatial data types,
table-valued functions and the performance improvements. If you are
targeting .NET 4.0 you still get all the bug fixes and other minor
improvements.
However interestingly, this tutorial discuses modifying the EDMX directly to add support for TVF, but it appears to be for a an old beta. The XML intellisense also didn't find the elements discussed in the tutorial, but it might be because it was using a different schema. Unfortunately I've run out of time to try and apply the tutorial to the new EF5 Release candidate, but I'd be interested in knowing if anyone has had any luck.
Unfortunately table valued function support is currently dependent on .NET 4.5 and VS 2012.
I have been using this approach in order to use table-valued functions from EF 4. Basically it includes hand-editing the EDMX file. The downside to that approach is that you need to edit the file manually whenever you update your model.
In my project I use .NET 3.5 and in this version during generation Entity Data Model generation Foreign key option is disabled. Is it possible to do this without change the framework for example type myself in EDM.Designer.Cs file code which handles the use of Foreign Key?
As far as I know, EF 3.5 doesn't yet support the foreign key columns in your entities - that's a new feature in EF 4.0 (.NET 4.0).
So basically the only available solution: switch to .NET 4.0 and you'll be fine - there's no other way to achieve this...