我正在尝试在Windows Forms应用程序中使用Entity Framework Core。没有其他代码被编写，这仅仅是初始项目设置。
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之后，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.
在相关参考文献本身上带有两个黄色警告符号。这会导致Scaffold-DbContext失败，并显示以下内容：
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.
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>
我尝试更改Framework和Entity版本，但是使用相同的引用却遇到相同的问题。我在packages目录中找到了.dll文件，并尝试手动添加它们，但没有任何改变。
这甚至有可能吗？
答案 0 :(得分：1)
所以我能够做到这一点。我使用EF Core创建了一个单独的项目，然后将数据层放在其中。保持数据分离更加容易，而EF使其易于引用。这是我的.NET Framework项目的参考：
<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" />
我试图拥有一个NET Core Winforms应用程序，但是让设计器正常工作就像跳过熊熊的篮球一样，所以我抓了一点。这是可行的，但不值得为我的项目付出努力。