CODEWITHSUNDEEP
entity-frameworkentity-framework-core
user281921
user281921

Reputation: 661

Entity Framework Core 2.0 on .NET 4.6.1

Microsoft just announced that Entity Framework Core 2.0 will now run on .NET Standard 2.0.

.Net Standard 2.0 is compatible (if that's the right term here) with .NET Framework 4.6.1.

However when I try add the latest NuGet package I get an error telling me that I'm using the wrong version:

 Install-Package : Could not install package 
 'Microsoft.EntityFrameworkCore.SqlServer 2.0.0-preview2-25332'. You are 
 trying to install this package into a project that targets 
 '.NETFramework,Version=v4.6.1', but 
 the package does not contain any assembly references or content files 
 that are compatible with that framework.

If according to the announcement I can use EF Core 2.0 with .NET Framework 4.6.1, can someone please explain, and if possible give an example of what that would look like.

Upvotes: 21

Views: 17288

Answers (4)

Italo José
Italo José

Reputation: 1686

go to your .csproj and change your TargetFramework

<PropertyGroup>
  <PackageTargetFallback>netstandard2.0</PackageTargetFallback>
</PropertyGroup>

to it 

  <PropertyGroup>
    <TargetFramework>netcoreapp2.0</TargetFramework>
  </PropertyGroup>

Upvotes: 1

Aistis Taraskevicius
Aistis Taraskevicius

Reputation: 811

Run Update-Package via Package Manager Console, this will somehow magically update all packets including .Net Core which by default would prevent you from updating them via Nuget, because it needs NetCore 2.0 target, while you're targeting 4.6.1 even though it should be compatible.

Project will work perfectly if you do this and hopefully soon updates will be viable directly via nuget as they meant to be.

Upvotes: 0

bricelam
bricelam

Reputation: 30425

In addition to installing the NETStandard.Library.NETFramework package, you may also have to tell older NuGet clients that it really is compatible by adding the following to your *.csproj file.

<PropertyGroup>
  <PackageTargetFallback>netstandard2.0</PackageTargetFallback>
</PropertyGroup>

Upvotes: 3

user281921
user281921

Reputation: 661

It seems that in order to include .NET Standard 2.0 libraries within a .NET 4.6.1 project you need to include the NetStandard.Library.NetFramework NuGet package.

Example of current version in the packages.config file:

<package id="NETStandard.Library.NETFramework" version="2.0.0-preview1-25305-02" targetFramework="net461" />

Upvotes: 7

Related Questions