iPackage/iPackage.Core.Web/Extensions/ApplicationContextExtensions.cs

using System;
using System.Collections.Generic;
using System.Reflection;
using System.Text;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Infrastructure;
using Microsoft.Extensions.DependencyInjection;

namespace iPackage.Core.Web.Extensions
{
    public class DbContextOptionCustomExtensionsInfo : DbContextOptionsExtensionInfo
    {
        public DbContextOptionCustomExtensionsInfo(IDbContextOptionsExtension extension) : base(extension)
        {
        }

        public override long GetServiceProviderHashCode()
        {
            return Extension.GetHashCode();
        }

        public override void PopulateDebugInfo(IDictionary<string, string> debugInfo)
        {
        }

        public override bool IsDatabaseProvider { get; }
        public override string LogFragment { get; }
    }
    public class DbContextOptionCustomExtensions : IDbContextOptionsExtension
    {
        public void ApplyServices(IServiceCollection services)
        {

        }

        public void Validate(IDbContextOptions options)
        {

        }

        public DbContextOptionCustomExtensions()
        {
            Info = new DbContextOptionCustomExtensionsInfo(this);
        }
        public Assembly ProjectAssembly { get; set; }
        public DbContextOptionsExtensionInfo Info { get; }
    }
    public static class ApplicationContextExtensions
    {
        public static DbContextOptionsBuilder UseProjectAssembly(this DbContextOptionsBuilder contextOptions, Assembly projectAssembly)
        {
            var extension = new DbContextOptionCustomExtensions
            {
                ProjectAssembly = projectAssembly
            };
            ((IDbContextOptionsBuilderInfrastructure)contextOptions).AddOrUpdateExtension(extension);
            return contextOptions;
        }
    }
}