carloscds

var db = new Contexto();

var dados1 = new Dados(db);
var cat = dados1.GetNoTracking(1);
Console.WriteLine(cat.CategoryName);

carloscds

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace EFAsNoTracking
{
    public class Dados
    {

carloscds

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace EFAsNoTracking
{
    class Program
    {

carloscds

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace EFAsNoTracking
{
    class Program
    {

carloscds

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace EFAsNoTracking
{
    public class Dados
    {

carloscds

using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace EFAsNoTracking
{
    public class Contexto : DbContext

carloscds

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Data.SqlClient;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.SqlServer;
using Microsoft.EntityFrameworkCore.Proxies; 

namespace LazyLoading
{

carloscds

using System;

namespace LazyLoading
{
    class Program
    {
        static void Main(string[] args)
        {
            var db = new Contexto();

carloscds

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Data.SqlClient;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.SqlServer;

namespace LazyLoading
{
    public class Contexto : DbContext

carloscds

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;

namespace LazyLoading
{
    public class Orders
    {
        [Key]
        public int OrderID {get; set;}