Recent questions tagged Entity

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entity framework - How do you update an edmx file with database changes?

I have an edmx file and I changed a table in my database. I know that there is an "Update Model from database ... there a better way to do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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629 views

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entity framework 5 - Looking for a Ninject scope that behaves like InRequestScope

On my service layer I have injected an UnitOfWork and 2 repositories in the constructor. The Unit of ... ).DefinesNamedScope("ServiceScope"); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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entity framework - Loop/reflect through all properties in all EF Models to set Column Type

My client has a standard of storing SQL Server decimals with a decimal(13,4) specification. As a result, ... setting properties line by line. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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entity framework - How can I delete 1,000 rows with EF6?

I am using Entity Framework 6. I have a table with test information called Tests. I am deleting rows from this ... this kind of thing using EF? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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610 views

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entity framework - Order navigation properties when using Include and/or Select methods with EF 4.1 Code-First?

This is the second step of a question explained here: EF 4.1 code-first: How to load related data (parent- ... in the first code example above)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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452 views

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entity framework - Simulating Cross Context Joins--LINQ/C#

Here's the issue: I have 2 data contexts that I would like to do a join on. Now I know that LINQ doesn't ... .LOANs select l).AsQueryable(); } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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627 views

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entity framework - Linq-to-entities - Include() method not loading

If I use a join, the Include() method is no longer working, eg: from e in dc.Entities.Include("Properties") ... join, the Include() works Lee See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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866 views

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entity framework - Package Manager Console Enable-Migrations CommandNotFoundException only in a specific VS project

I tried to run the command 'Enable-Migrations' in a new project and I got the message: PM> Enable-Migrations ... and the problem went away. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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773 views

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entity framework - EF Query With Conditional Include

I have two tables: a WorkItem table, and a WorkItemNote table. How do I return a WorkItem and all of the ... a conditional "Include", right? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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631 views

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entity framework - EF can't infer return schema from Stored Procedure selecting from a #temp table

Suppose the following: CREATE PROCEDURE [MySPROC] AS BEGIN CREATE TABLE #tempSubset( [MyPrimaryKey] [bigint] NOT NULL, ... to update the model? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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entity framework - The specified named connection is either not found in the configuration, not intended to be used with the EntityClient provider, or not valid

I have a one entity framework object and when I add it to my project, the connectionstring is added ... connectionstring, this error appears See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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695 views

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entity framework - Value cannot be null. Parameter name: entitySet

I have a fairly standard setup with simply POCO classes public class Project { public int ProjectId { get; set; ... directly relate to my setup. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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411 views

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entity framework - Is it recommended to use Self Tracking Entities with WCF services?

I want to know if using Self Tacking Entities (in Entity Framework) is recommended with WCF services? If yes, ... Any help will be appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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617 views

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entity framework - Querying objects after AddObject before SaveChanges?

In EntityFramework, is that possible to query the objects that have just been added to the context using ... the SaveChanges method? Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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621 views

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entity framework - ObjectContext.Refresh()?

How to update ALL the dirty entities from the data store, and reset their changed values to the original store ... the entities to be refreshed. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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418 views

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entity - find out the differences between two java beans for version tracking

say i have a java bean/an entity with 100 fields (inherited or not it is not relevant in this case). After ... . (field100.equals(o.field100)); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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636 views

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entity framework - EntityFramework Core automatic migrations

Is there any code to perform automatic migration in Entity Framework core code first in asp.net core project ... time when entities changed See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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471 views

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entity framework 4 - ASP.NET MVC / EF4 / POCO / Repository - How to Update Relationships?

I have a 1..* relationship between Review and Recommendations. The relevant portion of my model (which is also ... it's new/modified/deleted. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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686 views

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entity framework - How do you ensure Cascade Delete is enabled on a table relationship in EF Code first?

I would like to enable CASCADE DELETE on a table using code-first. When the model is re-created from scratch, ... . Why would this not work? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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771 views

1 answer

entity framework - DbSet.Find method ridiculously slow compared to .SingleOrDefault on ID

I have the following code (Database is SQL Server Compact 4.0): Dim competitor=context.Competitors.Find(id) When I ... What is going on here?? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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649 views

1 answer

entity framework - Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths

I am getting this error Introducing FOREIGN KEY constraint 'FK_dbo.Regions_dbo.Countries_CountryId' on table 'Regions' ... because of stores? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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616 views

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entity framework - Upgrade EF 4 EDMX to EF 6

My application is using a database first EDMX in EF 4. I would like to upgrade everything to EF 6. After getting EF ... EDMX to EF 6. Thank you. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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749 views

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entity framework - How can I disable code first migrations

I have a code-first entity model in EF5. But I want to manage the database changes manually -- I do not want EF ... . How do I turn this off? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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