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是否可以在 Win Forms 应用程序中使用 Entity Framework Core？ / 未找到参考文献警告

[英]Is it possible to use Entity Framework Core in a Win Forms Application? / References Not Found Warnings

 原文  2019-06-21 00:29:11  6   1    c#/ .net/ winforms/ entity-framework-core

问题描述

I am attempting to use Entity Framework Core in a Windows Forms application.我正在尝试在 Windows 窗体应用程序中使用 Entity Framework Core。 No other code has been written, this is all just initial project setup.没有编写其他代码，这只是初始项目设置。

I am receiving the following warnings after setting up a windows forms application in .net framework 4.6.2 and using the NuGet manager to install Microsoft.EntityFrameworkCore.SqlServer and Microsoft.EntityFrameworkCore.Tools:在 .net framework 4.6.2 中设置 Windows 窗体应用程序并使用 NuGet 管理器安装 Microsoft.EntityFrameworkCore.SqlServer 和 Microsoft.EntityFrameworkCore.Tools 后，我收到以下警告：

Warning     The referenced component 'Microsoft.Extensions.Configuration.Abstractions' could not be found.  
Warning     The referenced component 'Microsoft.Extensions.DependencyInjection.Abstractions' could not be found.

Along with the two yellow warning symbols on the related references themselves.以及相关参考文献本身的两个黄色警告符号。 This causes the Scaffold-DbContext to fail with:这会导致 Scaffold-DbContext 失败：

Could not load file or assembly 'Microsoft.Extensions.DependencyInjection.Abstractions, Version=2.2.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60' or one of its dependencies. The system cannot find the file specified.

I have already tried to edit the .csproj by adding:我已经尝试通过添加以下内容来编辑 .csproj：

<PropertyGroup>
  <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
  <GenerateBindingRedirectsOutputType>true</GenerateBindingRedirectsOutputType>
</PropertyGroup>

And I tried changing around the Framework & Entity versions but I keep running into the same problems with the same references.我尝试更改框架和实体版本，但我一直遇到相同引用的相同问题。 I found the .dll's in the packages directory and tried to add them manually but that changed nothing.我在包目录中找到了 .dll 并尝试手动添加它们，但没有任何改变。

Is this even possible to do?这甚至可以做到吗？

1 个解决方案

解决方案1
 1  2020-03-06 18:29:40

So I was able to do this.所以我能够做到这一点。 I created a separate project use EF Core and just put my data layer in there.我创建了一个单独的项目，使用 EF Core，并将我的数据层放在那里。 It's much easier to keep the data separate and EF makes it easy to reference.将数据分开更容易，EF 使其易于引用。 Here are the references for my NET Framework project:以下是我的 NET Framework 项目的参考资料：

<Reference Include="Microsoft.Bcl.AsyncInterfaces, Version=1.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Bcl.AsyncInterfaces.1.1.0\lib\net461\Microsoft.Bcl.AsyncInterfaces.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Bcl.HashCode, Version=1.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Bcl.HashCode.1.1.0\lib\net461\Microsoft.Bcl.HashCode.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Data.SqlClient, Version=1.0.19269.1, Culture=neutral, PublicKeyToken=23ec7fc2d6eaa4a5, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Data.SqlClient.1.0.19269.1\lib\net46\Microsoft.Data.SqlClient.dll</HintPath>
</Reference>
<Reference Include="Microsoft.EntityFrameworkCore, Version=3.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.EntityFrameworkCore.3.1.1\lib\netstandard2.0\Microsoft.EntityFrameworkCore.dll</HintPath>
</Reference>
<Reference Include="Microsoft.EntityFrameworkCore.Abstractions, Version=3.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.EntityFrameworkCore.Abstractions.3.1.1\lib\netstandard2.0\Microsoft.EntityFrameworkCore.Abstractions.dll</HintPath>
</Reference>
<Reference Include="Microsoft.EntityFrameworkCore.Relational, Version=3.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.EntityFrameworkCore.Relational.3.1.1\lib\netstandard2.0\Microsoft.EntityFrameworkCore.Relational.dll</HintPath>
</Reference>
<Reference Include="Microsoft.EntityFrameworkCore.SqlServer, Version=3.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.EntityFrameworkCore.SqlServer.3.1.1\lib\netstandard2.0\Microsoft.EntityFrameworkCore.SqlServer.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Extensions.Caching.Abstractions, Version=3.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Extensions.Caching.Abstractions.3.1.1\lib\netstandard2.0\Microsoft.Extensions.Caching.Abstractions.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Extensions.Caching.Memory, Version=3.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Extensions.Caching.Memory.3.1.1\lib\netstandard2.0\Microsoft.Extensions.Caching.Memory.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Extensions.Configuration, Version=3.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Extensions.Configuration.3.1.1\lib\netstandard2.0\Microsoft.Extensions.Configuration.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Extensions.Configuration.Abstractions, Version=3.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Extensions.Configuration.Abstractions.3.1.1\lib\netstandard2.0\Microsoft.Extensions.Configuration.Abstractions.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Extensions.Configuration.Binder, Version=3.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Extensions.Configuration.Binder.3.1.1\lib\netstandard2.0\Microsoft.Extensions.Configuration.Binder.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Extensions.DependencyInjection, Version=3.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Extensions.DependencyInjection.3.1.1\lib\net461\Microsoft.Extensions.DependencyInjection.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Extensions.DependencyInjection.Abstractions, Version=3.1.2.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Extensions.DependencyInjection.Abstractions.3.1.2\lib\netstandard2.0\Microsoft.Extensions.DependencyInjection.Abstractions.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Extensions.Logging, Version=3.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Extensions.Logging.3.1.1\lib\netstandard2.0\Microsoft.Extensions.Logging.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Extensions.Logging.Abstractions, Version=3.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Extensions.Logging.Abstractions.3.1.1\lib\netstandard2.0\Microsoft.Extensions.Logging.Abstractions.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Extensions.Logging.Configuration, Version=3.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Extensions.Logging.Configuration.3.1.1\lib\netstandard2.0\Microsoft.Extensions.Logging.Configuration.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Extensions.Logging.Console, Version=3.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Extensions.Logging.Console.3.1.1\lib\netstandard2.0\Microsoft.Extensions.Logging.Console.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Extensions.Options, Version=3.1.2.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Extensions.Options.3.1.2\lib\netstandard2.0\Microsoft.Extensions.Options.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Extensions.Options.ConfigurationExtensions, Version=3.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Extensions.Options.ConfigurationExtensions.3.1.1\lib\netstandard2.0\Microsoft.Extensions.Options.ConfigurationExtensions.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Extensions.Options.DataAnnotations, Version=3.1.2.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Extensions.Options.DataAnnotations.3.1.2\lib\netstandard2.0\Microsoft.Extensions.Options.DataAnnotations.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Extensions.Primitives, Version=3.1.2.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Extensions.Primitives.3.1.2\lib\netstandard2.0\Microsoft.Extensions.Primitives.dll</HintPath>
</Reference>
<Reference Include="Microsoft.Identity.Client, Version=3.0.8.0, Culture=neutral, PublicKeyToken=0a613f4dd989e8ae, processorArchitecture=MSIL">
  <HintPath>..\packages\Microsoft.Identity.Client.3.0.8\lib\net45\Microsoft.Identity.Client.dll</HintPath>
</Reference> 
<Reference Include="System" />
<Reference Include="System.Buffers, Version=4.0.2.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
  <HintPath>..\packages\System.Buffers.4.4.0\lib\netstandard2.0\System.Buffers.dll</HintPath>
</Reference>
<Reference Include="System.Collections.Immutable, Version=1.2.5.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
  <HintPath>..\packages\System.Collections.Immutable.1.7.0\lib\netstandard2.0\System.Collections.Immutable.dll</HintPath>
</Reference>
<Reference Include="System.ComponentModel.Annotations, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
  <HintPath>..\packages\System.ComponentModel.Annotations.4.7.0\lib\net461\System.ComponentModel.Annotations.dll</HintPath>
</Reference>
<Reference Include="System.Core" />
<Reference Include="System.Data.Common, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
  <HintPath>..\packages\System.Data.Common.4.3.0\lib\net451\System.Data.Common.dll</HintPath>
  <Private>True</Private>
  <Private>True</Private>
</Reference>
<Reference Include="System.Diagnostics.DiagnosticSource, Version=4.0.5.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
  <HintPath>..\packages\System.Diagnostics.DiagnosticSource.4.7.0\lib\net46\System.Diagnostics.DiagnosticSource.dll</HintPath>
</Reference>
<Reference Include="System.Memory, Version=4.0.1.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
  <HintPath>..\packages\System.Memory.4.5.3\lib\netstandard2.0\System.Memory.dll</HintPath>
</Reference>
<Reference Include="System.Numerics.Vectors, Version=4.1.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
  <HintPath>..\packages\System.Numerics.Vectors.4.4.0\lib\net46\System.Numerics.Vectors.dll</HintPath>
</Reference>
<Reference Include="System.Runtime.CompilerServices.Unsafe, Version=4.0.6.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
  <HintPath>..\packages\System.Runtime.CompilerServices.Unsafe.4.7.0\lib\netstandard2.0\System.Runtime.CompilerServices.Unsafe.dll</HintPath>
</Reference>
<Reference Include="System.Threading.Tasks.Extensions, Version=4.2.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
  <HintPath>..\packages\System.Threading.Tasks.Extensions.4.5.2\lib\netstandard2.0\System.Threading.Tasks.Extensions.dll</HintPath>
</Reference>
<Reference Include="System.Data.DataSetExtensions" />
<Reference Include="System.Data" />
<Reference Include="System.Drawing" />
<Reference Include="System.Windows.Forms" />
<Reference Include="System.Xml" />

I tried to have a NET Core Winforms application but getting the designer working was like jumping through flaming hoops so I scratched that.我试图拥有一个 NET Core Winforms 应用程序，但让设计器工作就像跳过燃烧的箍一样，所以我抓了它。 It's doable but not worth the effort for my project.这是可行的，但不值得为我的项目付出努力。

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