无法从程序集“Microsoft.AspNetCore.Hosting、版本=3.0.0.0 加载类型 'Context'

Question

使用 .net core 2.2 升级到 .net core 3.0

这是我们在运行单元测试时遇到的错误：

"Could not load type 'Context' from assembly 'Microsoft.AspNetCore.Hosting, Version=3.0.0.0"

Answer 1

这些步骤适用于我们的项目：

删除旧包

    <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="2.2.0" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc.Cors" Version="2.2.0" />
    <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="2.2.0" />
    <PackageReference Include="Microsoft.Extensions.Configuration" Version="2.2.0" />

安装

    Microsoft.AspNetCore.Mvc.Testing 3.0.0-preview7.19365.7

更新Startup.cs

    .AddApplicationPart(Assembly.Load("YourProjectControllerNamespace"))

无法从程序集“Microsoft.AspNetCore.Hosting、版本=3.0.0.0 加载类型 'Context'

Could not load type 'Context' from assembly 'Microsoft.AspNetCore.Hosting, Version=3.0.0.0

upgrade

preview

.net-core