无法在VS2015 Web项目

时间:2016-03-11 21:25:33

标签: c# entity-framework asp.net-web-api visual-studio-2015 asp.net-core

在我的VS2015 WebApi项目中,我尝试使用Package Manager中的以下命令安装NuGet包EntityFramework 6.1.3。该命令成功运行,如下面的消息所示。但是程序包仍未安装,编译项目时出现错误:

PM> Install-Package EntityFramework
Installing NuGet package EntityFramework.6.1.3.
Successfully installed 'EntityFramework 6.1.3' to myWebProjectName

编译错误: 错误NU1001无法解析依赖关系EntityFramework> = 6.1.3。 myWebProjectName C:... \ WebAPI \ ProductService \ src \ ProductService \ project.json

这是我的project.json文件

{
  "version": "1.0.0-*",
  "compilationOptions": {
    "emitEntryPoint": true
  },

  "dependencies": {
    "EntityFramework": "6.1.3",
    "Microsoft.ApplicationInsights.AspNet": "1.0.0-rc1",
    "Microsoft.AspNet.IISPlatformHandler": "1.0.0-rc1-final",
    "Microsoft.AspNet.Mvc": "6.0.0-rc1-final",
    "Microsoft.AspNet.Server.Kestrel": "1.0.0-rc1-final",
    "Microsoft.AspNet.StaticFiles": "1.0.0-rc1-final",
    "Microsoft.AspNet.WebApi.OData": "5.7.0",
    "Microsoft.Extensions.Configuration.FileProviderExtensions": "1.0.0-rc1-final",
    "Microsoft.Extensions.Configuration.Json": "1.0.0-rc1-final",
    "Microsoft.Extensions.Logging": "1.0.0-rc1-final",
    "Microsoft.Extensions.Logging.Console": "1.0.0-rc1-final",
    "Microsoft.Extensions.Logging.Debug": "1.0.0-rc1-final"
  },

  "commands": {
    "web": "Microsoft.AspNet.Server.Kestrel",
  },

  "frameworks": {
    "dnx451": { },
    "dnxcore50": { }
  },

  "exclude": [
    "wwwroot",
    "node_modules"
  ],
  "publishExclude": [
    "**.user",
    "**.vspscc"
  ]
}

更新

项目中的Reference文件夹为空,并且没有安装NuGet软件包,如下面的项目屏幕截图所示:

enter image description here

Solution Explorer窗口:

enter image description here

更新2

关闭项目并重新打开后,Reference文件夹显示两个文件夹DNX 4.5.1和DNX Core5.0,其中包含一些错误图标,如下所示:

enter image description here

2 个答案:

答案 0 :(得分:1)

我假设您使用ASP.NET 5模板来创建Web API项目。

右键单击项目中的references文件夹,然后单击“Restore Packages”。然后重建。

我认为DNX Core不支持Entity Framework 6。所以你可能也必须删除该引用。右键单击DNX Core 5.0下的“EntityFramwork”,然后单击“卸载包”。

您是否在此图片中看到了DNX的内容?

enter image description here

答案 1 :(得分:0)

替换实体框架"EntityFramework": "6.1.3",依据 "EntityFramework.Commands": "7.0.0-rc1-final", 它正常工作,然后加油。另见我添加的screeshot。

enter image description here