PlatformNotSupportedException：此平台不支持 Microsoft.Data.SqlClient答案

【问题标题】：PlatformNotSupportedException: Microsoft.Data.SqlClient is not supported on this platformPlatformNotSupportedException：此平台不支持 Microsoft.Data.SqlClient
【发布时间】：2020-06-08 12:23:53
【问题描述】：

可能是什么错误？我查看了类似的问题，将版本降级到 2.0 是解决方法，但这不是真的

DAL.dll

<ItemGroup>
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="3.1.4" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Proxies" Version="3.1.4" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="3.1.4" />
  </ItemGroup>

UIWEBAPP.dll

<ItemGroup>
    <PackageReference Include="CKEditor" Version="3.6.4" />
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="3.1.4" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Proxies" Version="3.1.4" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="3.1.4" />
    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="3.1.3" />
    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
  </ItemGroup>

【问题讨论】：

标签： c# entity-framework

【解决方案1】：

嘿，伙计，试试这些步骤，因为这种方法有效！！！

dotnet tool install --global dotnet-ef --version 3.0.0

<ItemGroup>
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="3.0.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="3.0.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="3.0.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="3.0.0" />

dotnet ef dbcontext scaffold "Server=serveraddresst;Database=db_name;User=db_username;Password=db_password" Microsoft.EntityFrameworkCore.SqlServer -c DataBaseContext -o Models

【讨论】：