I have this situation where I want to start using EF6 for new projects, because EF6 is the latest version, but I still want to be able the work on my old projects that use EF5.
To use EF6 in VS2012, I need to install the Entity Framework 6 Tools, but the problem is that install instructions say that "When you install the RC1 tooling it will replace the EF Designer that was included in Visual Studio 2012"
So to my understating, VS2012 will be unable to work with the old projects that use EF5?
The EF6 desing tools support both EF5 and EF6
Related
I'm having issues when creating an API Controller in .NET 5.0 with Entity Framework Core.
Here's what I'm doing:
I'm using .NET 5.0
Installed the Entity Framework Core packages and all 3 have the version 5.0
The model and DataContext classes have already been created and using them had already created a table in the database earlier
However when I right-click on the API project, click on Controller > Select "API Controller with actions, using Entity Framework" > Select "Model Class" & "DataContext class" > Enter the name of the controller
I keep getting the error
There was an error running the selected code generator: Package restore failed. Rolling back the changes for API
Troubleshooting done:
Cleared the NuGet Cache in Tools > Options > NuGet Package Manager > Clear All NuGet Cache(s)
Made sure that the Entity Framework Core packages and the .net version are the same in the .csproj
What am I missing here that is causing the issue?
If you have installed the latest version of Microsoft.VisualStudio.Web.CodeGeneration.Design package, you probably got version 5.0.2. That package cannot generate code based on Entity Framework Core packages of version 5.0.0.
From my experience - to generate EF Core based code, the version of your Design package should be equal to or less than the version of your EF Core packages. So, you need to either upgrade the EF Core packages, or install the version 5.0.0 of the Design package.
EDIT:
I faced the same issue and it was resolved after upgrading the EF Core packages, which is 5.0.4 currently, and installing the latest Design package, which is 5.0.2 currently.
In my case to generate EF core based code, i need to installed version 5.0.13 of Microsoft.EntityFrameworkCore and version 5.0.12 of Microsoft.EntityFrameworkCore.SqlServer and Microsoft.EntityFrameworkCore.Tools
and version 5.0.2 of Microsoft.VisualStudio.Web.CodeGeneration.Design
Note:- Make sure to clear Nuget Cache
I'm making the switch from frontend/Angular to backend/.NETCore. The biggest hurdle I've had is understanding what goes into scaffolding, especially when it comes to integration testing a WebAPI project and Entity Framework migrations.
Are there scaffolding tools similar to Angular Cli that promote good practices around things like setting up new projects or adding new classes in an organized, easily maintainable way?
Currently there is dotnet new which gives you both project templates (dotnet new razor, dotnet new mvc) as well as item templates (dotnet new page).
For entity framework, there is dotnet ef to help creating database contexts for existing databases (dotnet ef dbcontext scaffold) as well as managing migrations (dotnet ef migrations …).
I create new .NET Core projects using Visual Studio 2017 so the IDE automatically sets everything up in organised and maintainable way. It is certainly possible to do this in similar way to Angular CLI with .NET Core CLI. If you're creating .NET Core 2.x project you can find all the required commands here. For example; dotnet new webapi --name MyWebApiProject creates a web api project. To add Entity Framework you can use EF Core .NET Command-line Tools in similar way. Please find all EF Core commands here.
I am rather confused about the behaviour of Nuget Package manager and Entity Framework. As far as I have been seraching, Entity Framework supports only version 3.5 in .NET 3.5 (which was shipped with the .NET SP1). However, when I run Nuget Package it offered me to install EF 5 and today (upgrade to) EF 6.0.1. I am using Visual Studio 2010 and the project is a class library with target framework .NET 3.5.
My questions:
a) Can you use EF 5 or 6 with .NET 3.5? - My answer is no as well as some other answer in here.
b) How is it possible that Nuget offers me to download these versions?
c) I downloaded EF 5 with Nuget and it worked. How is that possible? (Even on EF website they say it is only for .NET 4.0 and higher)
We, the Entity Framework team, decided not to fix this issue (See Work Item 1341)
Only the version of System.Data.Entity.dll that ships with .NET Framework 3.5 will work with projects that target .NET Framework 3.5.
I recently did a portion of the MVCMusicStore tutorial using MVC3 as directed. However, being that I have Visual Studio 2012, I'm attempting to use EF in an MVC4 application. I was attempting to add the using System.Data.Entity; directive and it was not found.
I know that I can probably just add the reference to it. But I'd like to know why it's not already available for my MVC4 project. Is there a new method of creating an Entity Framework supported application using MVC4?
Entity Framework is now being distributed separately from Visual Studio through the NuGet package management system as of Visual Studio 2012. The reason for this is to decouple EF from the release of VS, so it can be released on a different time schedule. They have also recently released EF as an open source framework, so it's being removed as a project from the .net framework release.
You have to use NuGet to install Entity Framework in your project. Right click on the project and choose Manage Nuget Packages. Make sure you select the Online tab in the dialog that opens, then in the search type Entity Framework and click Install. You will then be able to add the using statement.
I'm working on a project with Entity Framework in Webmatrix 2 RC, so I need to use Entity Framework v.5 RC because of conflicts between previous versions and .NET Framework 4.5.
The two ways I know to install NuGet packages in Webmatrix are from the NuGet Gallery on the Webmatrix ribbon and from the package manager in ASP.NET Web Pages Administration: either solution proposes only Entity Framework v4.3.1.
I have downloaded Entity Framework v.5 RC with the Package Manager Console of Visual Web Developer and copied the EntityFramework.dll into the bin folder of my project.
This solution works but I wonder if exists a way to install a not recommended NuGet package that doesn't require the use of Visual Web Developer.
You can use nuget.exe or NuGet Package Explorer, both are standalone and lightweight. You'll still have to manually add references to the files though.