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entity framework - SQL LocalDB vs SQL Server CE
    I have a small project that will have 1 user on 1 computer. The database will be rather small (probably less ... best technology to use? Thanks! See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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entity framework - Readonly properties in EF 4.1
    I've faced with situation when I need to have EF readonly property in case of 'optimistic update'(you do not load ... ).IsModified = true; } } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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entity framework - EF Code First Parent-Child insertions with identity columns
    i have the following model. class Parent { int ParentId (identity column) { get; set; } string ParentName { ... be achieved using Code First? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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entity framework - What is the best practice in EF Core for using parallel async calls with an Injected DbContext?
    I have a .NET Core 1.1 API with EF Core 1.1 and using Microsoft's vanilla setup of using Dependency Injection ... time by some kind of factory? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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entity framework - DbContext is very slow when adding and deleting
    When using DbContext in a database-first scenario I found out that adding and deleting entities is very ... ideas/corrections are appreciated. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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468 views
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entity framework - How to add new table to existing database code first
    Originally I used EF 6 code first to create a new database and two new tables. The code is: public class ... ="System.Data.SqlClient" /> See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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entity framework - MapKey vs HasForeignKey Difference - Fluent Api
    What is actually the difference between: this.HasRequired(a => a.Something) .WithMany() .Map(a => a.MapKey ... (a => a.SomethingId); See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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entity framework - How to save an image to Database using MVC 4
    So I have a project which is a Shopping Cart, I have to save images to the database instead of uploading ... using entity framework code first. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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entity framework 5 - Debugging Package Manager Console Update-Database Seed Method
    I wanted to debug the Seed() method in my Entity Framework database configuration class when I run Update-Database ... they have the same issue. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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entity framework - Running SQL Server CE 4 Queries with Visual Studio 2012 and SQL Server Management Studio 2012
    I have recently upgraded to Visual Studio 2012 and SQL Server Management Studio 2012, however I cannot seem to see ... parse errors. Any clues? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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601 views
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entity framework core - EF7 migration in Pluralsight course
    Is anyone else having problems with the second migration in Shawn Wildermuth's Pluralsight course "Building a Web App ... what's causing 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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entity framework - How can I stop EF Core from creating a filtered index on a nullable column
    I have this model: public class Subject { public int Id { get; set; } [Required] [StringLength(50)] public ... and don't want it filtered. 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 - EF5 How to get list of navigation properties for a domain object
    I'm working on an EF 5 Code-First solution and I am trying to update an existing entity with a modified ... to modifiedEntity value } 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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605 views
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entity framework - Enable-Migrations installation error
    I'm running into a problem when enabling migrations on one of my projects. I execute Enable-Migrations command ... Visual Studio 2012 Update 2 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 - An anonymous type cannot have multiple properties with the same name
    I want to bind gridview through entity framework but it throws error like- An anonymous type cannot have multiple ... error here. usr.UserId. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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665 views
1 answer
entity framework - generic repository EF4 CTP5 getById
    I have a generic repository an I am trying to add a GetById method as shown here C# LINQ to SQL: Refactoring this ... = _context.Set<T>(); } See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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463 views
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entity framework - Problems using TPT (Table Per Type) in EF 4.2 and deletion of parent objects
    From what I understand on several posts the TPT architecure, with EF, does not create the necessary ON DELETE ... operations. Ciao! Jim Shaw See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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732 views
1 answer
entity framework - Generate money type fields using code first EF CTP5
    In this blog post: EF4 Code First Control Unicode and Decimal Precision, Scale with Attributes, Dane Morgridge ... language. Thanks in advance. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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635 views
1 answer
entity framework - How can I specify that my app should start SQL Server LocalDb with a trace flag parameter?
    My application uses a LocalDb instance to store it's data. I've noticed a quirk in the way that LocalDb ... done through the connection string? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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559 views
1 answer
entity framework 4 - Output parameter in stored procedure in EF
    I have an existing database with lots of complex stored procedure and I want to use those procedure through EF ... from a function invocation. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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445 views
1 answer
entity framework - Collection of complex child objects in Asp.Net MVC 3 application?
    I want to be able to update a model and all its collections of child objects in the same view. I have been ... object. But again, no textbox... See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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538 views
1 answer
entity framework - EF Code First Readonly column
    I am using EF Code first with database first approach. "with Database.SetInitializer(null);" My table has two ... from SQL server. Any idea? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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527 views
1 answer
entity framework - EF4.1 Code First: Stored Procedure with output parameter
    I use Entity Framework 4.1 Code First. I want to call a stored procedure that has an output parameter and retrieve ... EF4.1 Code First at all? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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401 views
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entity framework 4 - Ninject doesn't call Dispose on objects when out of scope
    I was surprised to find that at least one of my objects created by Ninject is not disposed of at the end ... } Everything else remains the same. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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765 views
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entity framework - EF Mapping and metadata information could not be found for EntityType Error
    I have encountered an exception when I use Entity Framework 4.0 RC. My Entity Framework model is ... .Core.Entities.OrganizationChart'. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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501 views
1 answer
entity framework 4.1 - EF Code First Additional column in join table for ordering purposes
    I have two entities that have a relationship for which I create a join table public class Student { public int ... add insert the relevant code? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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570 views
1 answer
entity framework - EF6 DBContext Dynamic Connection String
    public partial class ProcessContext : DbContext { static ProcessContext() { Database.SetInitializer<ProcessContext>(null); } ... .ToString(); } See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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470 views
1 answer
entity framework - EF 5 Changing Connection String at Runtime
    Ok, I want to recreate a project that I created using EF 4.1 to EF 5.0, simple enough or ... Connection.ConnectionString = connectionString; } } See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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