Using Entity Framework 4.1 with SQL Server 2008 R2 Express. I have a strongly typed DbContext (ctx in code) with IDbSet<Users> property which represents a table [Users] in the database.
I\'m having some troubles when trying to set my DB using a Initializer. I\'ve 3 tables, LabTest->LabValue<-LabIndicator, and this is how I code it:
I am getting an Error \"An object with the same key already exists in the ObjectStateManager. The ObjectStateManager cannot track multiple objects with the same key.\"
I\'m creating my first N-Tier MVC applicatio开发者_如何学Pythonn and I\'ve run into a road block with how to manage multiple DbContexts with my database first approach.
I 开发者_JS百科want to know if DBContext (EF 4.1) supports Self Tracking Entities. If yes, how can I do that?No unless you rewrite the template to support them. The current template is dependent on Ob
Supose the model as below: class public Post { public int Id {get; set;} public virtual ICollection<Comment> Comments {get;set;}
The Problem Not sure what the right way to do this is... I have a simple class: public partial class Event
I have two simple POCO classes; I\'m trying to get the MyY property below hydrated with the an instance of Y. I\'ve tried a number of ways to do this, and think I might be missing something obvious or
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