您的启动项目未引用 Microsoft.EntityFrameworkCore.Design [英] Your startup project doesn't reference Microsoft.EntityFrameworkCore.Design

问题描述

我的解决方案中有 2 个项目，我有一个安装了 Entity Framework Core 的项目:

I have 2 projects in my solution, I have a project with Entity Framework Core installed:

在另一个 ASP.NET Web API 项目中，我有这些包:

And in the other ASP.NET Web API project I have these packages:

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="Antlr" version="3.5.0.2" targetFramework="net461" />
  <package id="Microsoft.ApplicationInsights" version="2.5.1" targetFramework="net461" />
  <package id="Microsoft.ApplicationInsights.Agent.Intercept" version="2.4.0" targetFramework="net461" />
  <package id="Microsoft.ApplicationInsights.DependencyCollector" version="2.5.1" targetFramework="net461" />
  <package id="Microsoft.ApplicationInsights.PerfCounterCollector" version="2.5.1" targetFramework="net461" />
  <package id="Microsoft.ApplicationInsights.Web" version="2.5.1" targetFramework="net461" />
  <package id="Microsoft.ApplicationInsights.WindowsServer" version="2.5.1" targetFramework="net461" />
  <package id="Microsoft.ApplicationInsights.WindowsServer.TelemetryChannel" version="2.5.1" targetFramework="net461" />
  <package id="Microsoft.AspNet.Mvc" version="5.2.4" targetFramework="net461" />
  <package id="Microsoft.AspNet.Razor" version="3.2.4" targetFramework="net461" />
  <package id="Microsoft.AspNet.TelemetryCorrelation" version="1.0.0" targetFramework="net461" />
  <package id="Microsoft.AspNet.Web.Optimization" version="1.1.3" targetFramework="net461" />
  <package id="Microsoft.AspNet.WebApi" version="5.2.4" targetFramework="net461" />
  <package id="Microsoft.AspNet.WebApi.Client" version="5.2.4" targetFramework="net461" />
  <package id="Microsoft.AspNet.WebApi.Core" version="5.2.4" targetFramework="net461" />
  <package id="Microsoft.AspNet.WebApi.HelpPage" version="5.2.4" targetFramework="net461" />
  <package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.4" targetFramework="net461" />
  <package id="Microsoft.AspNet.WebPages" version="3.2.4" targetFramework="net461" />
  <package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="2.0.0" targetFramework="net461" />
  <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net461" />
  <package id="Newtonsoft.Json" version="11.0.1" targetFramework="net461" />
  <package id="System.Diagnostics.DiagnosticSource" version="4.4.1" targetFramework="net461" />
  <package id="WebGrease" version="1.6.0" targetFramework="net461" />
</packages>

当我在 PMC 中运行 Add-Migration 时:

When I run Add-Migration in PMC:

您的启动项目API"未引用Microsoft.EntityFrameworkCore.Design.这个包是必需的实体框架核心工具工作.确保您的启动项目是正确，安装软件包，然后重试.

Your startup project 'API' doesn't reference Microsoft.EntityFrameworkCore.Design. This package is required for the Entity Framework Core Tools to work. Ensure your startup project is correct, install the package, and try again.

我在启动项目中安装了 Microsoft.EntityFrameworkCore.Design 而不是包含所有实体的数据项目，现在它可以工作了，项目应该这样设置吗?

I installed Microsoft.EntityFrameworkCore.Design in the startup project instead of the data project that will contain all the entities and now it works, is this how the project should be setup?

推荐答案

我找到了解决方案 这里.

简而言之，编辑您的 csproj 文件，并将以下条目添加到您的 PropertyGroup 部分:

In short, edit your csproj file, and add to your PropertyGroup section following entry:

<GenerateRuntimeConfigurationFiles>True</GenerateRuntimeConfigurationFiles>

这篇关于您的启动项目未引用 Microsoft.EntityFrameworkCore.Design的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！