Entity Framework Core - Knowledge Base (KB)
576 results for: in tag: .net-core
How do you configure the DbContext when creating Migrations in Entity Framework Core?
Is there way that dependency injection can be configured/bootstrapped when using Entity Framework's migration commands?...Entity Framework Core supports dependency injection for ...DbContext... subclasses. This mechanism includes allowing for configurati...
asked by vossad01
Getting sqlite to work in ASP.NET 5 (vnext)
I'm trying to get "EntityFramework....SQLite...": "7.0.0-beta1" to work within ASP.NET 5....I've created my project using Yeoman and installed EF sqlite from the package manager....The project builds fine but when running I get:...Could not load file or a...
asked by ryan g
ASP.NET 5 Console Application (package) - How to create DBContext from connection string?
I'm trying to create DBContext from connection string on .net core. This used to work with .net 4.5:...public class MyContext : DbContext { internal MYContext(string connectionString) : base(connectionString){} } ...Now I'm getting error that the base ...
asked by f0rt
EntityFramework Commands in ASP.Net 5 Class Library Package?
I am trying to develop my first ASP.Net web application and in my solution I have two projects. A ...Web Application... and ...Class Library (Package).... When I build the ASP.Net 4.5 version of this application I put my ...Entity Framework 6... entities ...
asked by Matthew Verstraete
Database First but only a subset of the database
I am creating an asp.net6 web application that will pull back transactional data from an existing database. Inside the database we have a lot of lookup tables that I don't have a need for. I am able to import the database with ...ef dbcontext scaffold... ...
asked by Jamie Babineau
Error during compilation with .NET 4.6.1 on a Nuget Class Library with EF core
I have a problem during compilation for two .NET class libraries. the problem occur during build targeting .NET4.6.1 (or 4.5.2, 4.6 or other, I've try all).....NET Framework 4.6 error CS0012: The type 'Func<,>' is defined in an assembly that is not refe...
asked by cdie
Equivalent for .HasOptional in Entity Framework Core 1 (EF7)
Consider two classes....public class File { [Key] public string Id { get; set; } public string Message_Id { get; set; } internal Message Message { get; set; } } public class Message { [Key] public string Id { get; set; } ...
asked by Chatumbabub
How to get user information in DbContext using Net Core
I am trying to develop a class library in which i want to implement custom ...DbContext.... In the ...SaveChanges... method of the ...DbContext..., i need to get current user’s information(department, username etc.) for auditing purpose. Some part of th...
asked by adem caglin
.NET Core 1.0 and EntityFramework 7 Not Compatible
I've upgraded to Visual Studio Code 1.0.0 and I'm trying to retrofit an ASP.NET Core project I was working on in VSCode previously, before the new release. VSCode is seemingly quite different now in terms of configuration. I've worked with ...this tutoria...
asked by robbpriestley
How to persist a list of strings with Entity Framework Core?
Let us suppose that we have one class which looks like the following:...public class Entity { public IList<string> SomeListOfValues { get; set; } // Other code } ...Now, suppose we want to persist this using EF Core Code First and that we are usi...
asked by user1620696
How to update a product database by entity framework core 1.0 rc2
In entity framework core 1.0 RC1 when I published a website, it generated a ef.cmd file, I can ran ...ef database update... to update the product database. How can I do it in RC2 when there is no ef.cmd file.
asked by Qiang
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
Return async task using LINQ select
I want to implement function that return list of child items from database asynchronously. So I write a function:... public async Task<IEnumerable<object>> GetFiles(int parentId) { var data = from file in DB.Files where f...
asked by Rem
Package Remotion.Linq 2.0.2 is not compatible with netcoreapp1.0
This one is driving me crazy....If I create a .NET Core Console App in VS2015, making no changes it builds and runs as expected....When I add Entity Framework RC2 by adding a dependency in project.json...{ "version": "1.0.0-*", "buildOptions": { "...
asked by Mark Chidlow
Error when scaffolding using Entity Framework Core in ASP.Net core
I am trying to create models using an existing SQL Server 2016 database. When the run the command prompt as shown in the documentation:...PM> Scaffold-DbContext "'Server=techestatevm.southeastasia.cloudapp.azure.com;Database=Blogging;User Id=newuser;Passw...
asked by Vinod
Showing classes from indirectly referenced packages in .NET Core
I am trying to implement basic UoW/Repository pattern with ASP.NET/Entity Framework Core and I have encountered very troubling behavior....My solution consists of 4 projects in total.....DAL project..., where my entity classes are defined and where my DbC...
asked by Admir Tuzović
How to do Migrations and SQL Server connection on MacOS
I'm in OSX and I'm creating a new ASP.NET Core Web API. I've followed this tutorial: ...https://docs.efproject.net/en/latest/platforms/netcore/new-db-sqlite.html...That's cool and all but what about Sql Server? Now I know SQL Server won't yet run on OSX (...
asked by Prof
Login fails after changing password ASP.NET Core
I'm using ASP.NET Core 1.0 and the identity stuff to authenticate and authorize the users. It all works fine except one single thing:...If the user resets or changes his password, he can't sign-in with the new credentials until the ASP.NET App is restarte...
asked by Juergen Gutsch
How to unapply a migration in ASP.NET Core with EF Core
When I run ...PM> Remove-Migration -context BloggingContext... in VS2015 with an ASP.NET Core project using EF Core I get the following error:...System.InvalidOperationException: The migration '20160703192724_MyFirstMigration' has already been applied to ...
asked by nam
.net core 1.0.0 with entity framework core sqlite
I am trying to create a .net core application that has a connection to a sqlite database. ...I have .net core sdk 1.0 installed and have added the following Nuget-packages to my project:...Microsoft.EntityFrameworkCore.Sqlite...Microsoft.EntityFrameworkCo...
asked by Guido Roth
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