Comment Feed for Channel 9 - 10-4 Episode 15: Model-First Development with the Entity Framework 4.0 http://ecn.channel9.msdn.com/o9/previewImages/100/464253_100x75.jpg Channel 9 - 10-4 Episode 15: Model-First Development with the Entity Framework 4.0 In this episode of 10-4, we introduce a new tooling enhancement coming with Visual Studio 2010 and the Entity Framework 4.0: model-first development. This feature allows you to create your Entity Data Model from scratch and then generate a database from it, as opposed to reverse engineering your EDM from an existing database. For more 10-4 episodes, be sure to visit: http://channel9.msdn.com/shows/10-4 Visual Studio Topic Area on Channel 9: http://channel9.msdn.com/VisualStudio Visual Studio 2010 CTP VPC: http://tinyurl.com/GetCTP 10-4! Over and out! en Tue, 21 May 2013 11:04:00 GMT Tue, 21 May 2013 11:04:00 GMT Rev9 Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0 posted by Moemeka

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633748364590000000 Thu, 09 Apr 2009 01:14:19 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633748364590000000 Moemeka Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0
Also, I attempted to use EF that shipped with 3.5 on a database at work and I subsequently went back to LINQ because the EF wizard "forgot" to pull two of my tables from my database.  I attempted to regenerate the model several times with no luck.   These tables were found in the generated files, but were not present to the tool, nor did visual studio recongize them.  I also recieved compiler errors when I attempted to reference them.  I am wondering if anyone else had this problem with bridging tables which facilitate many-to-many relationships.

posted by ChrisStepaniuk

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633748472300000000 Thu, 09 Apr 2009 04:13:50 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633748472300000000 ChrisStepaniuk Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0
Also, isn't this entity framework v2? is there anything there regarding POCO models? I know they were suposed to be adding this, I'd much rather create ignorant models with INotifyPropertyChanged and generate a conceptual from them, and generate a database schema from the conceptual model.

posted by stevo_

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633748727760000000 Thu, 09 Apr 2009 11:19:36 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633748727760000000 stevo_ Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0

posted by vesuvius

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633748791520000000 Thu, 09 Apr 2009 13:05:52 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633748791520000000 vesuvius Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0

posted by Analise

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633748816280000000 Thu, 09 Apr 2009 13:47:08 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633748816280000000 Analise Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0

posted by ChrisStepaniuk

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633748856760000000 Thu, 09 Apr 2009 14:54:36 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633748856760000000 ChrisStepaniuk Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0 posted by Moemeka

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633749219820000000 Fri, 10 Apr 2009 00:59:42 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633749219820000000 Moemeka Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0 As long I you fix simple things like being able to do model.DeleteCustomers (c => c.Surname == "Smith") i'll be happy.

posted by PerfectPhase

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633749579380000000 Fri, 10 Apr 2009 10:58:58 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633749579380000000 PerfectPhase Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0 Features that need to be there:
-Change scripts as well as create scripts (looks like this is already there?)
-Sized fields like Varchar need to have some way to map back field. In fact if you could constrain the field as an EF field during any save operation that would be better. I am talking zero custom code. I set String field with Length 20 in the tooling. It throws an exception on 21+ characters.

posted by foreachdev

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633753229000000000 Tue, 14 Apr 2009 16:21:40 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633753229000000000 foreachdev Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0
Thought I'd mention an ORM product I've been using - Mindscape LightSpeed - which has provided model first and database first support for quite some time. It has a model designer that integrates directly into VS, supports schema round tripping in both directions and heaps more. It doesn't support such a rich conceptual modelling capability as EF but I find it fits what I need. Also supports 9 database types.

Just thought i'd make some LightSpeed-specific comparisons with posts here -

@PerfectPhase You can write a query similar to that using LightSpeed. UnitOfWork.Remove() takes a query object that can be as complex as you wish and will delete all records that match without returning data to the client.

@foreachdev You can configure the LightSpeed validation in the designer to not allow persistence if a field is over a given length. If an entity has a field that had 21 characters the .IsValid flag would be false and the errors collection would supply a description of the issue to present to the user if desired. Change scripts are supported in a rough manner but this is getting much tidier in the next version I hear.

While we wait for EF 2 to pop out you could have a look at LightSpeed Express here.

posted by bertnz

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633768235100000000 Sat, 02 May 2009 01:11:50 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633768235100000000 bertnz Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0 .NET Framework 3.0 was released before the VS23008 IDE. Some extensions were added to VS2005 for WCF and WF but you could always use notepad Smiley

posted by santosh_b

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633777223580000000 Tue, 12 May 2009 10:52:38 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633777223580000000 santosh_b Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0 It's nice to see that this concept will be improved. But i think you should have a deep look at the extended data types of Microsoft Dynamics AX. That's a great thing i currently miss in Visual Studio.

posted by Rudsen

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633784504990000000 Wed, 20 May 2009 21:08:19 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633784504990000000 Rudsen Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0 can we see how to use the API-level aspects of this framework? preferrably in a test-driven fashion? this is what I really need to see to compare this against the Rails style of development. pointing and clicking all over the UI doesn't really do it for me, I'm a keyboard-oriented person.

I really love the 10-4 videos, especially the ones that JC does. Keep up the good work!

posted by matthargett

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633801015650000000 Mon, 08 Jun 2009 23:46:05 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633801015650000000 matthargett Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0 LINQ To SQL is getting quit a few improvements in the .NET 4 timeframe. You can see a pretty comprehensive list here: http://damieng.com/blog/2009/06/01/linq-to-sql-changes-in-net-40

As far as the Entity Framework being the preferred option for data access moving forward, yes, that is the case.

posted by LostInTangent

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633825864340000000 Tue, 07 Jul 2009 18:00:34 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633825864340000000 LostInTangent Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0 Thanks for the heads up bertnz. The ORM space certainly has lots of great options.

posted by LostInTangent

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633825864790000000 Tue, 07 Jul 2009 18:01:19 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633825864790000000 LostInTangent Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0 I'll definitely be digging into the code much more moving forward. This episode was just an initial introduction to the high level changes coming. I'll make sure to provide plenty of good detail/usage examples Smiley

posted by LostInTangent

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633825866180000000 Tue, 07 Jul 2009 18:03:38 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633825866180000000 LostInTangent Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0 Sounds like what you want it to use Dynamics as your data store/platform, and then place the Entity Framework over it so that you can program against its dynamic entities. If so, the guys over at ADX Studio (http://www.adxstudio.com/) are working on something that handles this very nicely.

posted by LostInTangent

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633825868700000000 Tue, 07 Jul 2009 18:07:50 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633825868700000000 LostInTangent Re: 10-4 Episode 15: Model-First Development with the Entity Framework 4.0 Hi! What happens if i want to add enumeration to my model? How's that gonna be represented in Database?

posted by ethx

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633974668070000000 Sat, 26 Dec 2009 23:26:47 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-15-Model-First-Development-with-the-Entity-Framework-40#c633974668070000000 ethx