Program.cs

using ControleDeContatos.Data;
using ControleDeContatos.Helper;
using ControleDeContatos.Repositorio;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.SqlServer;
using Microsoft.AspNetCore.Http;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddControllersWithViews();

builder.Services.AddEntityFrameworkSqlServer().AddDbContext<BancoContext>(o => o.UseSqlServer(builder.Configuration.GetConnectionString("Database")));

builder.Services.AddScoped<IContatoRepositorio, ContatoRepositorio>();
builder.Services.AddScoped<IUsuarioRepositorio, UsuarioRepositorio>();
builder.Services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
builder.Services.AddScoped<ISessao, Sessao>();
builder.Services.AddScoped<IEmail, Email>();
builder.Services.AddSession(o => {
    o.Cookie.HttpOnly = true;
    o.Cookie.IsEssential = true;
});

var app = builder.Build();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Home/Error");
    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
    app.UseHsts();
}

app.UseHttpsRedirection();
app.UseStaticFiles();

app.UseRouting();

app.UseAuthorization();

app.UseSession();

app.MapControllerRoute(
    name: "default",
    pattern: "{controller=Login}/{action=Index}/{id?}");

app.Run();