Entity Framework 6 - Knowledge Base (KB)
61 results for: in tag: entity-framework-core
What happened to System.Data.Entity.DbConfiguration class in EF7
I am trying to add the MySQL Connector/Net provider for EF7: using one of the following. But ...System.Data.Entity... does not have a class ...DbConfiguration... in EF7. Has this class been moved or am I expected to do something different to add the MyS...
asked by grldsndrs
Get Entity Table Name - EF7
As the question states, anyone know how to get the entity table name in entity framework 7?...I have the code to do this in entity framework 6.1 (from another site, cant find link), but none of the interfaces/objects seem to be referenced in entity framew...
asked by Gillardo
What logic determines the insert order of Entity Framework 6
So, I have a DBContext, and I am doing the following operations:...dbContext.SomeTables1.Add(object1) dbContext.SomeTables2.AddRange(objectArray2) dbContext.SomeTables3.AddRange(objectArray3) dbContext.SaveChanges(); ...The EF doesn't insert the db record...
asked by Adam
Access IBM db2 database with asp net 5
I need to connect my ASP Net 5 application with a IBM Db2 database....I found these nuget package:...https://www.nuget.org/profiles/IBMDB2EF...And i followed this tutorial:...https://www.ibm.com/developerworks/community/blogs/96960515-2ea1-4391-8170-b0515...
asked by Jonhy.Olivas
How do I reference Entity Framework 6 from a .NET core class library in RC2?
I have a .NET core class library from which I want to reference Entity Framework 6.1.3. Here is my project.json:...{ "version": "1.0.0-*", "dependencies": { "NETStandard.Library": "1.5.0-rc2-24027", "EntityFramework": "6.1.3" }, "framew...
asked by SirG
How can I load the connection string from App.config or WebConfig.config in Entity Framework Core
In the old versions I can give the connection string directly in the DbContext constructor....Example in EF v6: My connection string in the App.config is given below:... <connectionStrings> <add name="DatabaseConnecionString" connectionString="Da...
asked by Bassam Alugili
There is no implicit reference conversion from ApplicationUser to IdentityUser
I am trying to customize some ASP.NET Identity Core classes which use Generics....My ApplicationUser class:...public class ApplicationUser : IdentityUser<Guid>//, ApplicationUserClaim, ApplicationRole, ApplicationUserLogin> { public ApplicationUser()...
asked by Legends
Refactoring EF6 to EF Core
I've been attempting to refactor some EF6 code to EF Core 1 and have hit a small stumbling block. The code I'm attempting to convert is here:...https://github.com/mehdime/DbContextScope...Everything is mostly fine but DbContextScope.cs in particular is pr...
asked by Richard
Use EF6 with ASP.NET Core
I am working a new project - and I want to do it using the latest .NET Core....Reading through the documentation, I came across the comparison between Entity Framework Core and Entity Framework 6.x Comparison. ...Here...Some of the features that I require...
asked by Dawood Awan
EntityState.Modified does work differently on updating in EF Core vs EF 6
When I run this method with EF 6 the student was updated!... public async Task Update(Student student) { context.Entry(student).State = EntityState.Modified; await context.SaveChangesAsync(); } ...When I run this me...
asked by Pascal
implement both EntityFramework 6 and EntityFramework Core side-by-side in a n-tier solution
Here is an excerpt from ...Getting Started with ASP.NET Core and Entity Framework 6...:..."The recommended way to use Entity Framework 6 in an ASP.NET Core 1.0 application is to put the EF6 context and model classes in a class library project (.csproj...
asked by RandyDaddis
How to access users when Identity project uses EF Core and Class Library uses EF6 with same database
We have a .NET Core project that uses Identity 3 and IdentityDbContext using EF Core for user management. The generated tables are stored in a common SQL server database that is also being used by another project in our solution that is a .NET 4.5.2 Fram...
asked by Pacificoder
auto create database in Entity Framework Core
My application which is being ported to .NET core will use the new EF Core with SQLite. I want to automatically create the database and table structures when the app is first run. According to the EF core documentation this is done using manual commands ....
asked by deandob
How to save changes twice in one method using Entity Framework Core
Using Entity Framework Core i am trying to save changes twice for the same entity collection.... public async Task Save(IEnumerable<Request> request) { var entities = request.Select(x => new MyEntity() { File...
asked by LP13
Bulk Update in Entity Framework Core
I pull a bunch of timesheet entries out of the database and use them to create an invoice. Once I save the invoice and have an Id I want to update the timesheet entries with the invoice Id. Is there a way to bulk update the entities without loading them o...
asked by Adrian Brand
Entity Framework Migration: Sequence contains more than one matching element
We've recently done a large refactor on our codebase (adding some new entities, updating namespaces, changing navigation properties etc.)...Our codebase prior to the refactor had a number of entity framework migrations (which were working fine)....However...
asked by Blake Williams
Update-Database command is not working in ASP.Net Core / Entity Framework 6 because object in database already exists
I was updating my database by the command line, but then I manually updated one of my tables. ...This seems to have disrupted my ability to update-database. I receive the following error when I try to update: ... System.Data.SqlClient.SqlException: There ...
asked by Kelsey Steele
Single Address table used to store addresses for many entities (using double foreign key) with Entity Framework
I am attempting to use a single ...Address... table to store addresses for several entities in the system with a generic ...KeyId... field. A Customer can have multiple addresses and a Vendor can have multiple addresses....Address... class:...public int I...
asked by Blake Rivell
Entity Framework .NET Core 2.0 Query hangs on execution when subquery is executed
With a regular version of EF 6.x I was able to do subqueries pretty easy with the following query:...var q = from u in db.User let actions = from ua in db.UserActions where ua.UserId == u.Id && ua.Approved ...
asked by Alexey Strakh
Application break accessing dbcontext, Asp .net core web api 2.0 with entity framework core 2.0 database first approach
I have developed asp .net core wep api 2.0 application with EntityFrameworkCore.SqlServer 2.0. It is developed using database first approach. When trying to access entities using dbcontext application is going to break mode. I cannot find the reason for a...
asked by bhathiya.m
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