ManagedInteropApp - Cannot run as a .net core app

[adammarks]

I created a example of a Managed entry point C++/CLI Interop app with .net 4.7.2 , made sure that worked, then converted it to .NET Core 3

The app builds fine as Debug / x86 or Release / x86, but when I run, I get the following error message

This doesn't make sense to me because I have that release installed, here's my .net core info

.NET Core SDK (reflecting any global.json):
 Version:   3.1.101-servicing-014750
 Commit:    458eb288fa

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.18363
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\3.1.101-servicing-014750\

Host (useful for support):
  Version: 3.1.1-servicing.19575.1
  Commit:  f15b6f92ec

.NET Core SDKs installed:
  2.1.509 [C:\Program Files\dotnet\sdk]
  3.0.101 [C:\Program Files\dotnet\sdk]
  3.1.100 [C:\Program Files\dotnet\sdk]
  3.1.101-servicing-014750 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.14 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.14 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.0.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.1.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.14 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.0.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.1.1-servicing.19575.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 3.0.1 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 3.1.1-servicing.19575.1 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]    

This is the ManagedInteropApp.runtimeconfig.json 's contents

{
  "runtimeOptions": {
    "tfm": "netcoreapp3.1",
    "framework": {
      "name": "Microsoft.WindowsDesktop.App",
      "version": "3.1.1-servicing.19575.1"
    }
  }
}

[mjrousos]

How strange. Two ideas:

• Does x64 work?
• If you build a 'hello world' app by running dotnet new wpf in an empty directory, does that app run? If so, what does it's runtimeconfig.json look like?

[adammarks]

@mjrousos I do get farther with x64, I can run the app but then when I try to hit C++/CLI code I get the following https://www.screencast.com/t/QKdvqOE54wNj

[adammarks]

@mjrousos I did a dotnet new wpf and that works fine, but then when I change the Platform target to x86 I do get the same error https://www.screencast.com/t/9ncwPMmoR

[mjrousos]

Interesting. Sounds like there may be bitness issues. Can you make sure that you have an x86 version of the .NET SDK installed that corresponds with the version listed in the runtimeconfig.json file?

[adammarks]

@mjrousos I did get past this error for the x86 builds by installing the x86 version of .NET core also.

But, I still get a BadFormatException when I try to load the C++/CLI assembly

[adammarks]

I wrote a separate bug for the BadFormatException https://github.com/adammarks/netcoreproto/issues/5