術語「添加遷移」不被識別爲cmdlet，函數，腳本文件或可操作程序的名稱

Question

請幫助我解決此問題。以下是我的project.json文件。

{ 
    "dependencies": { 
    "Microsoft.NETCore.App": { 
     "version": "1.0.0", 
     "type": "platform" 
    }, 
    "Microsoft.AspNetCore.Diagnostics": "1.0.0", 
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0", 
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.0", 
    "Microsoft.Extensions.Logging.Console": "1.0.0", 
    "Microsoft.AspNetCore.Razor.Tools": { 
     "version": "1.0.0-preview2-final", 
     "type": "build" 
    }, 
    "Microsoft.AspNetCore.StaticFiles": "1.0.0", 
    "Microsoft.AspNetCore.Mvc": "1.0.0", 
    "Microsoft.Extensions.Configuration.Json": "1.0.0", 
    "Microsoft.EntityFrameworkCore": "1.0.0", 
    "Microsoft.EntityFrameworkCore.SqlServer": "1.0.0", 
    "Microsoft.EntityFrameworkCore.Tools": "1.0.0-preview2-final", 
    "Microsoft.EntityFrameworkCore.SqlServer.Design": "1.0.0" 
    }, 

    "tools": { 
    "Microsoft.AspNetCore.Razor.Tools": "1.0.0-preview2-final", 
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final", 
    "Microsoft.EntityFrameworkCore.Tools": { 
     "version": "1.0.0-preview2-final", 
     "imports": [ "portable-net45+win8+dnxcore50", "portable-net45+win8" ] 
    } 
    }, 

    "frameworks": { 
    "netcoreapp1.0": { 
     "imports": [ "dotnet5.6", "portable-net45+win8" ] 
    } 
    }, 

    "buildOptions": { 
    "emitEntryPoint": true, 
    "preserveCompilationContext": true 
    }, 

    "runtimeOptions": { 
    "configProperties": { 
     "System.GC.Server": true 
    } 
    }, 

    "publishOptions": { 
    "include": [ "wwwroot", "web.config" ] 
    }, 

    "scripts": { 
    "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ] 
    } 
} 

當我創建一個全新的項目，並同project.json文件添加到項目中，「添加遷移」命令運行完美。

當我在網上查詢時，人們談論重新啓動VS2015，我已經完成了所有工作，仍然存在問題。

Answer 1

您是否試過在您的Add-Migration之前運行Enable-Migrations命令？

或者，如果不工作，this answer似乎表明從的NuGet