For some reason I am getting the following error at the db.SaveChanges(); instruction: Cannot insert the value NULL into column \'UserId\', table \'XXXXXXXXX_Dev.dbo.Portfolios\'; column does not all
I\'m using Entity Framework 4 and I have created a UnitOfWork class that creates my Context and exposes that through a public property as a IContext interface.
This seems a lot harder than it should be. I\'m writing an event registration site using MVC3, SQL Compact Edition, and Entity Frameworks Code First, and making use of Steven Sanderson\'s Mvc Scaffol
Is there a way to do, in code, what is done when creating an object context under add New Item --> Entity Data Model in visual studio?
I\'ve created the following Context to be used with Entity Framework Code First: public class Context : DbContext
I have some code that needs to run every time an Entity is Inserted into my database, th开发者_开发问答e problem is that this code requires the Entity PrimaryKey.
This is in continuation with my problem here. I\'m trying to use the solution Julie Lerman gave me a few months ago.I\'m currently using the following to generate a new Game entity pre-attached to my
I have an object that has an ObjectContext.OnSave of that object I am running an action using that ObjectContext like this:
I have been trying to update the performance of my code in regards to database queries.The problem I am currently running into is that I cant seem to find a way to get a new context for each subQuery.
Is there a way to get ObjectQuery<T> for specfied generic type? Ps开发者_开发百科eudo: public partial class MyObjectContext
加载中,请稍侯......