当我尝试使用.net core制作Web APP时出现此错误。 但是我的代码没有错误
*。csproj文件 在这里添加
<Project Sdk="Microsoft.NET.Sdk.Web">
<PropertyGroup>
<TargetFramework>netcoreapp2.2</TargetFramework>
<AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.AspNetCore.App" />
<PackageReference Include="Microsoft.AspNetCore.Identity" version="2.2.0 " />
<PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="2.2.0" />
<PackageReference Include="Microsoft.AspNetCore.Razor.Design" Version="2.2.0" PrivateAssets="All" />
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="2.2.4" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="2.2.4" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Relational.Design" Version="1.1.6" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite.Core" Version="2.2.4" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="2.2.4" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="2.2.4">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
</PackageReference>
</ItemGroup>
<ItemGroup>
<Folder Include="Areas\Admin\Controllers\Views\Category\" />
</ItemGroup>
</Project>