“找不到与命令"dotnet-ef"匹配的可执行文件". [英] "No executable found matching command "dotnet-ef""

问题描述

我正在尝试使用

我已经创建了一个ASP.NET Core Web应用程序

我已使用现在，我正在尝试使用 dotnet ef迁移从项目文件夹(位于project.json所在的位置)中的命令提示符添加Initial 来设置数据库迁移:

Now, I am trying to setup the database migration using dotnet ef migrations add Initial from command prompt within project's folder (where project.json is located):

找不到与命令"dotnet-ef"匹配的可执行文件

No executable found matching command "dotnet-ef"

我更改了project.json，以便dotnet-ef起作用:

I have changed project.json, so that dotnet-ef works:

"tools": {
...
"Microsoft.EntityFrameworkCore.Tools": {
  "version": "1.0.0-preview1-final",                
  "imports": [
    "portable-net45+win8+dnxcore50",
    "portable-net45+win8"
  ]
}

现在，生成失败并显示以下错误:

Now, the generation fails with the following error:

指定的框架'Microsoft.NETCore.App'版本找不到'1.0.0-rc2-3002702'.-检查应用程序依赖性并确定安装在以下位置的框架版本:C:\ Program Files \ dotnet \ shared \ Microsoft.NETCore.App-已安装以下版本:1.0.01.0.11.1.0-或者，安装框架版本"1.0.0-rc2-3002702"

The specified framework 'Microsoft.NETCore.App', version '1.0.0-rc2-3002702' was not found. - Check application dependencies and target a framework version installed at: C:\Program Files\dotnet\shared\Microsoft.NETCore.App - The following versions are installed: 1.0.0 1.0.1 1.1.0 - Alternatively, install the framework version '1.0.0-rc2-3002702'

好吧，这是有道理的，因为Microsoft.EntityFrameworkCore.Tools 1.0.0-preview1-final依赖于错误中提到的旧版本(如project.lock.json文件中的版本).

Ok, it makes sense, because Microsoft.EntityFrameworkCore.Tools 1.0.0-preview1-final relies on the old version mentioned in the error, as found in the project.lock.json file.

我不想降级，所以我放了最新版本的Microsoft.EntityFrameworkCore.Tools:

I don't want to downgrade, so I put the latest version of Microsoft.EntityFrameworkCore.Tools I could find:

 "Microsoft.EntityFrameworkCore.Tools": {
  "version": "1.1.0-preview4-final",
  "imports": [
    "portable-net45+win8+dnxcore50",
    "portable-net45+win8"
  ]
},

这样做会导致相同的错误:

Doing this will lead to the same error:

找不到与命令"dotnet-ef"匹配的可执行文件

No executable found matching command "dotnet-ef"

我如何使其在1.1版中工作?

How can I make it work in version 1.1?

其他可能有用的上下文信息:

Other context information that might be useful:

操作系统:Windows 7 x64VS:2015年社区版来自project.json的其他部分:

OS: Windows 7 x64 VS: 2015 Community Edition Other parts from project.json:

"frameworks": {
"netcoreapp1.1": {
  "imports": [
    "portable-net45+win8+dnxcore50",
    "portable-net45+win8"
  ]
}
},

"runtimes": {
"win7-x64": {}
},

推荐答案

更新[30/3/2017]

新软件包为

Install-Package Microsoft.EntityFrameworkCore.Tools

---

原始

<罢工>尝试添加

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

此外，这里是有关使用EF Core 1.1.0设置.Net Core 1.1.0的教程

Additionally here is a tutorial on setting up .Net Core 1.1.0 with EF Core 1.1.0

https://docs.microsoft.com/en-us/ef/core/get-started/netcore/new-db-sqlite

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