Calling .net core dll from asp.net

Question

I have made a dll in .net core 6 and I want to call it in an asp.net project having framework 4.8. I just clicked Add Reference and browsed the dll. When I run the project, it gives the following exception:

Could not load file or assembly 'System.Runtime, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.

Any ideas how to solve this?

You can't. That's it. .NET 6 is .NET Core 6. You can't call .NET Core libraries from .NET Framework libraries — Panagiotis Kanavos
– Panagiotis Kanavos, Commented Jul 25, 2022 at 7:18
Does this answer your question? Mixing .Net Framework app with .Net Core library — John Wu
– John Wu, Commented Jul 25, 2022 at 7:19
Another similar Invoke method from .Net Core library in .Net framework application: You can't, it has to be a .NET Standard library — Panagiotis Kanavos
– Panagiotis Kanavos, Commented Jul 25, 2022 at 7:21
What are you trying to do? If this is a new application it should target .NET Core, not .NET Framework. If you want to use one of the Microsoft.Extensions.* packages, you won't have problems if you add them directly, as they target .NET Standard 2.0. If you use a library that uses the Microsoft.Extensions.*, you should change it into a .NET Standard library if you want to use it in .NET Framework applications — Panagiotis Kanavos
– Panagiotis Kanavos, Commented Jul 25, 2022 at 7:24
@PanagiotisKanavos I have created a .net core dll to distribute. I am trying to create a web UI as a demo app for the dll. I don't have any experience in creating web UIs with .net core this is why I am using simple asp.net framework 4.8. — Muhammad Usama Alam
– Muhammad Usama Alam, Commented Jul 25, 2022 at 11:08

groogiam · Accepted Answer · 2022-07-25 22:34:30Z

1

You could try targeting it to .NET Standard 2.0

https://learn.microsoft.com/en-us/dotnet/standard/net-standard?tabs=net-standard-2-0. It could then be consumed by .NET Framework 4.8. Your ability to do this would depend on what libraries you consume and all of them having a .NET Standard 2.0 or lower target.

answered Jul 25, 2022 at 22:34

groogiam

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