为什么 Visual-Studio 为一个应用程序自动生成 app.config 而不是另一个应用程序？

Question

I have a solution with 3 projects. One is a library, the other two are console apps which both use this library.

I was having problems running one of the applications - a call into my lib that calls System.Buffers.Binary.BinaryPrimitives was generating an assembly exception.

I noticed their app.config files are different:

App A

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
    </startup>

App B

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
    </startup>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="System.Numerics.Vectors" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.1.4.0" newVersion="4.1.4.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Runtime.CompilerServices.Unsafe" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.0.6.0" newVersion="4.0.6.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Buffers" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.0.3.0" newVersion="4.0.3.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>
</configuration>

All those additional assemblies are dependencies of my library project, so should presumably be in both. Why the library project itself isn't referenced I don't know.

I have never touched the config files so they are autogenerated but not equivalently. Why? And how can I get VS to regenerate?

The only difference in approach I can think of is that when I started using my library in App A, VS suggested adding a reference which I accepted. In App B, I believe I added the dependency manually.

Answer 1

References are mentioned in csproj file, you can access it by right clicking your project, unload, edit. there it will look something like this. also you can manage your project references under Reference 'folder'

<ProjectReference Include="..\YourProject.csproj">
  <Project>{68836A56-12B9-4740-A78D-78F027336CBF}</Project>
  <Name>YourProject</Name>
</ProjectReference>

Mostly you do not edit app.config for reference purposes. Shortly, app.config is used for runtime settings.