.NET Core NuGet EF Core 版本不匹配

Question

I am following this tutorial: Tutorial

I searched for about 4 hours and didn't find a solution for how to fix this error:

Startup project 'DatabaseConnection' is an ASP.NET Core or .NET Core project for Visual Studio 2015. This version of the Entity Framework Core Package Manager Console Tools doesn't support these types of projects.

I produced it with following command:

Scaffold-DbContext "Server=127.0.0.1;Database=vicotv;Trusted_Connection=True;" Microsoft.EntityFrameworkCore.SqlServer -OutputDir Models

Following I tried to update the EF SQL server.

PM> Install-Package Microsoft.EntityFrameworkCore.Tools -Version 1.1.0-msbuild3-final

GET https://api.nuget.org/v3/registration1-gz/microsoft.entityframeworkcore.tools/index.json GET https://www.nuget.org/api/v2/curated-feeds/microsoftdotnet/Packages(Id='Microsoft.EntityFrameworkCore.Tools',Version='1.1.0-msbuild3-final') OK https://api.nuget.org/v3/registration1-gz/microsoft.entityframeworkcore.tools/index.json 143ms Error finding repository for 'https://www.nuget.org/api/v2/curated-feeds/microsoftdotnet/': An error occurred while retrieving package metadata for 'Microsoft.EntityFrameworkCore.Tools.1.1.0-msbuild3-final' from source 'Microsoft and .NET'. A task was canceled. Retrieving package 'Microsoft.EntityFrameworkCore.Tools 1.1.0-msbuild3-final' from 'nuget.org'. Installing NuGet package Microsoft.EntityFrameworkCore.Tools.1.1.0-msbuild3-final. Successfully installed 'Microsoft.EntityFrameworkCore.Tools 1.1.0-msbuild3-final' to DatabaseConnection Executing nuget actions took 122.12 ms Time Elapsed: 00:00:00.9439736

But with this error the Package isn't updated.

The following is my project.json file:

{
"buildOptions":{
    "emitEntryPoint":true,
    "preserveCompilationContext":true
},
"dependencies":{
    "Microsoft.EntityFrameworkCore.SqlServer":"1.1.0",
    "Microsoft.EntityFrameworkCore.SqlServer.Design":"1.1.0",
    "Microsoft.ApplicationInsights.AspNetCore":"2.0.0",
    "Microsoft.AspNetCore.Mvc":"1.1.1",
    "Microsoft.AspNetCore.Routing":"1.1.0",
    "Microsoft.AspNetCore.Server.IISIntegration":"1.1.0",
    "Microsoft.AspNetCore.Server.Kestrel":"1.1.0",
    "Microsoft.Extensions.Configuration.EnvironmentVariables":"1.1.0",
    "Microsoft.Extensions.Configuration.FileExtensions":"1.1.0",
    "Microsoft.Extensions.Configuration.Json":"1.1.0",
    "Microsoft.Extensions.Logging":"1.1.0",
    "Microsoft.Extensions.Logging.Console":"1.1.0",
    "Microsoft.Extensions.Logging.Debug":"1.1.0",
    "Microsoft.Extensions.Options.ConfigurationExtensions":"1.1.0",
    "Microsoft.NETCore.App":"1.1.0",
    "Microsoft.EntityFrameworkCore.Design":"1.1.0",
    "Microsoft.EntityFrameworkCore":"1.1.0",
    "Microsoft.AspNetCore.Server.IISIntegration.Tools":"1.1.0-preview4-final",
    "Microsoft.EntityFrameworkCore.Tools":"1.1.0-msbuild3-final"
},
"frameworks":{
    "netcoreapp1.0":{
        "imports":[
            "dotnet5.6",
            "portable-net45+win8"
        ]
    }
},
"publishOptions":{
    "include":[
        "wwwroot",
        "**/*.cshtml",
        "appsettings.json",
        "web.config"
    ]
},
"runtimeOptions":{
    "configProperties":{
        "System.GC.Server":true
    }
},
"scripts":{
    "postpublish":[
        "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%"
    ]
},
"tools":{

},
"runtimes":{
    "win10-x86":{

    },
    "win10-x64":{

    }
}}

My dotnet information:

PM> dotnet --info

.NET Command Line Tools (1.0.0-preview2-1-003155)

Product Information:

Version: 1.0.0-preview2-1-003155

Commit SHA-1 hash: d7b0190bd4

Runtime Environment:

OS Name: Windows

OS Version: 10.0.14393

OS Platform: Windows

RID: win10-x64

What am I supposed to do?

Answer 1

I had a similar error trying to create a data migration for a code first project using Visual Studio 2015.Netcore data project:

"Startup project 'Company.Application.Data' is an ASP.NET Core or .NET Core project for Visual Studio 2015. This version of the Entity Framework Core Package Manager Console Tools doesn't support these types of projects."

Solved using following steps using PowerShell:

1. Navigate to the project directory(in my case f:_dev\Company.Application.Data)
2. type: dotnet restore
3. Add new migration example type: dotnet ef migrations add MyExampleMigrationName
4. Your migration should appear in visual studio
5. Edit your new migration as needed