sunmeat

using Microsoft.Data.SqlClient;

class Program
{
    static void Main()
    {
        Console.Title = "Список таблиць БД";
        Console.OutputEncoding = System.Text.Encoding.UTF8;

        // MARS - Multiple Active Result Sets !!! MultipleActiveResultSets=True; !!!

sunmeat

using Microsoft.EntityFrameworkCore;

namespace EF_Core___Code_First__1_Table
{
    public class User
    {
        public int Id { get; set; }         // первинний ключ
        public string? Name { get; set; }   // інші поля
        public int Age { get; set; }
    }

sunmeat

// початкова версія: https://github.com/sunmeat/efcore_codefirst_ensurecreated

// ApplicationDbContext.cs:

using EFCoreCodeFirst.Models;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;

namespace EFCoreCodeFirst
{

sunmeat

AppDbContext.cs:

using EFCoreCodeFirst.Models;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;

namespace EFCoreCodeFirst
{
    public class AppDbContext : DbContext
    {

sunmeat

AppDbContext.cs:

using EFCoreCodeFirst.Models;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;

namespace EFCoreCodeFirst
{
    public class AppDbContext : DbContext
    {

sunmeat

... контекст ...
    
... моделі ...

=========================================================================================================

Repositories / PersonRepository.cs:

public class PersonRepository
{

sunmeat

using System.Xml.Serialization;
using System.Reflection;

public interface IFileHandler
{
    void WriteToFile<T>(string filePath, T data);
    T ReadFromFile<T>(string filePath);
    void UpdateFile<T>(string filePath, T data);
}

sunmeat

namespace UseDll
{
    public class Person
    {
        public string? Name { get; set; }
        public int Age { get; set; }
    }

    internal class Program
    {

sunmeat

// https://learn.microsoft.com/uk-ua/dotnet/api/system.runtime.loader.assemblyloadcontext?view=net-9.0

using System.Reflection;
using System.Runtime.InteropServices;
using System.Runtime.Loader;
using System.Text;

namespace UseDll
{
    public class Person

sunmeat

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>net9.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>

    <!-- метадані для NuGet пакету -->
    <PackageId>com.sunmeat.mylibrary</PackageId> <!-- тут вкажіть свій УНІКАЛЬНИЙ ID пакету -->
    <Version>1.0.0</Version> <!-- вкажіть версію пакету -->