objectset

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ObjectSet.AddObject(T) problem?

The ObjectSet.Single(predicate) doesn\'t work (the Where() andtoList() methods as well) unless i write it this way:[详细]

2023-03-25 16:33 分类：问答
Why is this throwing a NULL value exception?

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[详细]

2023-03-19 02:53 分类：问答
How can I create an instance of an ObjectSet?

I am making DAO unit tests in my project and I have a problem using the ObjectSet class. I have to create a new 开发者_运维问答ObjectSet but in order to do this, I must not connect to the DB.So I can[详细]

2023-03-16 18:37 分类：问答
Generic ObjectContext? objectContext.GetObjectSet<TEntity>?

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[详细]

2023-03-04 06:02 分类：问答
Django querying through sets

I\'m new to Django and I\'m stuck at querying through multiple sets. I have three models; class Project(models.Model):[详细]

2023-02-23 03:48 分类：问答
Why does hard coding a function expression speed up query by four minutes?

I am using Dane Morgridge\'s repository code as a parent to my repository class. In the parent class--EFRepository--there is a method that calls an ObjectSet\'s Where clause passing in a Func method.[详细]

2023-01-25 08:11 分类：问答
Entity Framework: ObjectSet and its (generics) variance

I use: EntityFramework + POCO Here is the thing: public interface IBaseType { int Id { get; set; } } public class BaseType : IBaseType[详细]

2023-01-15 23:26 分类：问答
Get Objects from an ObjectSet by specifying a Range in EF

I am trying out EF 4.0.I have an Employee Object and using EF I am getting the Employee ObjectSet by simply calling[详细]

2023-01-09 08:01 分类：问答
Entity Framework 4.0 - Including entities - Eager loading problem

We have 3 tables in our db that each have an entity in our edmx. To illustrate my problem, imagine 3 tables:[详细]

2023-01-05 05:13 分类：问答
Custom JS loading twice

I have a custom js file defined in a site def.This gets injected into the master page he开发者_运维知识库ad as expected.However, something is also injecting another script tag into the body of the pag[详细]

2022-12-19 21:26 分类：问答