EFコア足場DbContext

Question

足場に問題がありますDbContextです。私は、最新の.NET Core 1.1.0 SDKを使用していると私は、このガイド以下のよ：私はパッケージマネージャコンソールで次のコマンドを実行するとhttps://docs.microsoft.com/en-us/ef/core/get-started/aspnetcore/existing-db

をしかし：Scaffold-DbContext "<connection-string>" Microsoft.EntityFrameworkCore.SqlServer -OutputDir Models、私は例外を取得します。

project.json

"dependencies": { 
    "Microsoft.EntityFrameworkCore": "1.1.0", 
    "Microsoft.EntityFrameworkCore.Design": "1.1.0", 
    "Microsoft.EntityFrameworkCore.SqlServer": "1.1.0", 
    "Microsoft.EntityFrameworkCore.SqlServer.Design": "1.1.0", 
    "Microsoft.EntityFrameworkCore.Tools": "1.1.0-preview4-final", 
    "NETStandard.Library": "1.6.1" 
    }, 

    "tools": { 
    "Microsoft.EntityFrameworkCore.Tools": "1.1.0-preview4-final" 
    }, 

    "frameworks": { 
    "netstandard1.6": { 
     "imports": [ 
     "dnxcore50" 
     ] 
    } 
    } 

例外

System.IO.FileNotFoundException: Could not load file or assembly 
'System.Data.SqlClient, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified. 
File name: 'System.Data.SqlClient, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' 
    at Microsoft.EntityFrameworkCore.Scaffolding.Internal.SqlServerDatabaseModelFactory.Create(String connectionString, TableSelectionSet tableSelectionSet) 
    at Microsoft.EntityFrameworkCore.Scaffolding.RelationalScaffoldingModelFactory.Create(String connectionString, TableSelectionSet tableSelectionSet) 
    at Microsoft.EntityFrameworkCore.Scaffolding.Internal.SqlServerScaffoldingModelFactory.Create(String connectionString, TableSelectionSet tableSelectionSet) 
    at Microsoft.EntityFrameworkCore.Scaffolding.Internal.ReverseEngineeringGenerator.GetMetadataModel(ReverseEngineeringConfiguration configuration) 
    at Microsoft.EntityFrameworkCore.Scaffolding.Internal.ReverseEngineeringGenerator.GenerateAsync(ReverseEngineeringConfiguration configuration, CancellationToken cancellationToken) 
    at Microsoft.EntityFrameworkCore.Design.Internal.DatabaseOperations.ScaffoldContextAsync(String provider, String connectionString, String outputDir, String dbContextClassName, IEnumerable`1 schemas, IEnumerable`1 tables, Boolean useDataAnnotations, Boolean overwriteFiles, CancellationToken cancellationToken) 
    at Microsoft.EntityFrameworkCore.Design.OperationExecutor.<ScaffoldContextImpl>d__22.MoveNext() 
    at System.Collections.Generic.EnumerableHelpers.ToArray[T](IEnumerable`1 source, Int32& length) 
    at System.Collections.Generic.EnumerableHelpers.ToArray[T](IEnumerable`1 source) 
    at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) 
    at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass4_0`1.<Execute>b__0() 
    at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action) 
Could not load file or assembly 'System.Data.SqlClient, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified. 

Answer 1

このため現在の回避策は、ソリューションにスタートアッププロジェクトとして設定されている実行可能なプロジェクトに足場を実行することです。