This is Invoice System Creation implemented by 1 - OnionArch - 2 - ASP.NET Core 2.2 3 - EF Core Code First 4 - Razor Views 5 - Repository Pattern
There is Some Links that Help me to implement this small Task For Generic Repo Implementation => https://dotnettutorials.net/lesson/generic-repository-pattern-csharp-mvc/ For Clean Arch => https://github.com/jasontaylordev/CleanArchitecture