在Entity Framework中动态创建DbSet <T>？

public class MyEntity
{
    public int Id { get; set; }
    public string Name { get; set; }
}

public class MyDbContext : DbContext
{
    public MyDbContext(DbContextOptions<MyDbContext> options) : base(options)
    {
    }

    // 动态创建的DbSet<T>将在此处添加
}

public static void AddDbSet<T>(this DbContext context) where T : class
{
    var entityType = context.Model.FindEntityType(typeof(T));
    if (entityType == null)
    {
        var method = typeof(ModelBuilder).GetMethod("Entity", BindingFlags.Public | BindingFlags.Instance);
        var genericMethod = method.MakeGenericMethod(typeof(T));
        var modelBuilder = (ModelBuilder)Activator.CreateInstance(typeof(ModelBuilder), new object[] { context });
        var entityTypeBuilder = (EntityTypeBuilder)genericMethod.Invoke(modelBuilder, null);
        var model = context.Model;
        var modelBuilderParameter = new ModelBuilder(model.GetInfrastructure());
        modelBuilderParameter.Entity(entityTypeBuilder.Metadata);
        context.ChangeTracker.Entries().ToList().ForEach(entry => entry.State = EntityState.Detached);
    }
}

using (var context = new MyDbContext(options))
{
    context.AddDbSet<MyEntity>();

    // 使用动态创建的DbSet<T>
    var myEntities = context.Set<MyEntity>();
    myEntities.Add(new MyEntity { Id = 1, Name = "Entity 1" });
    myEntities.Add(new MyEntity { Id = 2, Name = "Entity 2" });
    context.SaveChanges();
}