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•Created by Up on 8/11/2023 in #help

✅ EF Core Relations don't seem to work properly

I'm trying to model a fairly complex set of relations in EntityFramework core / ASP.NET, but am failing to create a new entry as the system insists it already exists; yet the corresponding table in the DB is empty

43 replies

CC#

•Created by Up on 8/21/2022 in #help

ASP.NET MVC Legacy Route Hell

So I have a very old API that was originally written in MVC. this api manages projects where each project has an ID + user-friendly slug, and then has a bunch of files that each have file name + file ID. now I have an MVC route mapping that I will need to know how it resolves, so I can then extract those properties from the URL back to my own application.

4 replies

CC#

•Created by Up on 8/14/2022 in #help

C++ Interop - writing a shim to use an existing c++ library [Answered]

So I'm currently trying to make a shim for a C++ library that I can then call from C#. The original library uses CMake, not MSBuild, so I've set up Cmake, let it generate the .vcxproj files, made a 2nd C++ project for my shim classes and made it depend on the generated projects. Then I've added that + the generated projects into my C# msbuild solution. Now I am trying to call a hello world function that I made in my shim library form C#, but that immediately fails with no indicator as to what went wrong. all I get is System.Runtime.InteropServices.SEHException: 'External component has thrown an exception.'. How I declared it on the C++ side:

extern "C" {
  void __declspec(dllexport) __stdcall CLIP_Hello();
}

extern "C" {
  void __declspec(dllexport) __stdcall CLIP_Hello();
}

How I declared it on the C# side:

[DllImport("ClipShim", EntryPoint = "CLIP_Hello", CallingConvention = CallingConvention.StdCall)]
public static extern void Hello();

[DllImport("ClipShim", EntryPoint = "CLIP_Hello", CallingConvention = CallingConvention.StdCall)]
public static extern void Hello();

any help appreciated!

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