Entity Framework Core - Knowledge Base (KB)
40 results in tag: visual-studio-2015
How to create an index for a string property in Entity Framework 7
I'm trying to create a code first model for Entity Framework 7. I'm using recently released Visual Studio 2015 Beta and the following versions of EntityFramework packages (snippet from my project.json file):..."EntityFramework.SqlServer": "7.0.0-beta1", "...
asked by Alexander Bessonov
How can I manage EF 6 migrations in visual studio 2015?
I started a new MVC project with ...EntityFramework -Version 6.1.2... using Visual Studio 2013 latest update. I made a couple of migrations and updated the database. After this I checked out the project on another computer and opened with Visual Studio 20...
asked by Luca Morelli
Configure more than one dbcontext in EF 7
I created a web starter application with VS 2015 ctp, and I would like to add an in-memory store to do some test, but when I try to read the data, I get this message ...The data stores 'SqlServerDataStore' 'InMemoryDataStore' are available. A context ca...
asked by Luca Morelli
Nuget error "Object reference not set to an instance of an object" while installing Entityframework 7 from Package Manager Console in VS2015
I am trying to build a sample application using EF7 and mvc 6 in visual studio 2015 pre release....While installing both EF7 and MVC6 using package manager console getting this error.... PM> Install-Package EntityFramework.Commands -Version 7.0.0-beta3 -P...
asked by jkyadav
Entity Framework 7 Migration Scaffolding in Class Library with Configuration
Trying to add migrations to an EF7 Model that lives in an ASP.NET 5 class library. When running ...dnx . ef migration add mymigration... fails with different results depending on which project I run it on. ...If I run it in the folder of the main project,...
asked by CuddleBunny
ASP.NET 5, Entity Framework 7 & SQL Server 2014 - multiple dbContexts, SQL views
I have created a solution in Visual Studio 2015 consisting of a Web project (using the ASP.NET 5 Beta 6 Web Application Preview Template), and a Model project (using Entity Framework 7 Beta 6)....I got to the point where I could get data from a SQL Server...
asked by Jerms
does Visual Studio 2015 include .edmx support?
Does Visual Studio 2015 include .edmx support?...I have a project that includes an .edmx data model and double-clicking it in VS2015 just opens the XML editor....There's no DbContext generator option in the file->new dialog.
asked by Spongman
Visual Studio 2015 crashing each time I run Update-Database
Each time I run Update-Database from the package manager console, Visual Studio 2015 is crashing. It happens to be running my migrations Configuration.Seed method at the time. Any idea where I should look to find out what's going on?
asked by jlavallet
NuGet package referencing issues in new Nuget Class Library template in Visual Studio 2015
I've been working with the pre-release version of VS2015 recently which gave the option of a "ASP.NET 5 Class Library" which has since changed in RTM to simply "Class Library (Package)" With the description ...PREVIEW - A project template for creation a c...
asked by BenM
How can I update my project from System.runtime 4.0.10.0 to 4.0.20.0
I get this error when I build my project:...Severity Code Description Project File Line Error CS1705 Assembly 'EntityFramework.Core' with identity 'EntityFramework.Core, Version=7.0.0.0, Culture=neutral, PublicKeyToken=null' uses 'System.Ru...
asked by Elisabeth
The EntityFramework package is not installed on project ASP.NET Beta8
Trying to get Entity Framework 7 to work in my ASP.NET 5 Beta8 project. I have references to EntityFramework.SqlServer 7.0.0-beta8 and EntityFramework.Commands 7.0.0-beta8 packages in my references. ...Yet when I go to the Nuget Package Manager Console...
asked by Ian Forsyth
Entity Framework edmx click on diagram very slow
Background first: I have a database-first EF6 model in Visual Studio 2015 (latest nuget 6.1.3 pointing to a local SQL Server 2014 SP1 Express database) on a Windows 10 Pro laptop. After I upgraded from Windows 8.1 and Visual Studio 2013. I also upgraded t...
asked by Tree
Entity framework 7, visual studio 2015, console commands don't work
I am using the ASP.NET 5 Web application Template (which is using EF7 and MVC 6), the one with the individual User Accounts, and I have the following problem:...When I add my own DBSet to the ApplicationDbContext class, and then going to a page which is t...
asked by anonymous
Add Migration gives "Unable to resolve project from ..."
Using EF7 on an ASP.NET 5 project I tried to add a migration typing the following on VS Package Manager Console:...dnx ef migrations add InitialDatabaseSetup ...And I got the error:...Unable to resolve project from C:\Projects\ASPNET5DEMO ...The project i...
asked by Miguel Moura
How to access ASP.NET UserManager
I am looking for the correct way to get access to the UserManager<MyUser> object outside of a controller using the most recent incarnation of ASP.NET MVC 5 and Entity Framework 7....I want to seed my database with users in my seed class, but I have been u...
asked by ChiliYago
How to scaffold DbContext with plural DbSet property names in Entity Framework Core?
I use ...Scaffold-DbContext... command in ...Package Manager Console... to create and re-create context and entities for an existed SQL Server database:...Scaffold-DbContext -provider EntityFramework.MicrosoftSqlServer -connection "my connection string" ....
asked by Ilya Chumakov
Visual Studio 2015 and Entity Framework Migrations not working
We are using Visual Studio 2015 Update 1 and Entity Framework 6.1.3. Also we are following the Code-First approach and are using Entity Framework Migrations to respond to schema changes. Since updating to Visual Studio 2015, some fellow developers can not...
asked by Fabe
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
MissingMetadataException when building UWP app with .Net native
I have this UWP app that uses a project (UWP class library) which itself uses EF7 and SQLite....I tried to build the app in the Release mode using .Net native tool chain, the build completes successfully (after a good long time, and after eating as much m...
asked by AymenDaoudi
Looping through tables in Entity Framework 6
sorry for the simple question. I'm new at this. I have an entity model with several tables and I'd like to get a list of the tables, then I'd like to get the contents of a column from the tables....For example, I have tables of subjects: Biology, Chemistr...
asked by CSharpFiasco
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