Program.cs

using BulkyBook.DataAccess;
using BulkyBook.DataAccess.Repository;
using BulkyBook.DataAccess.Repository.IRepository;
using Microsoft.EntityFrameworkCore;using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Identity.UI.Services;
using BulkyBook.Utility;

;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddControllersWithViews();
builder.Services.AddDbContext<AppilicationDbContext>(
    options=>options.UseSqlServer(
            builder.Configuration.GetConnectionString("DefaultConnection")
        )
    );
builder.Services.AddIdentity<IdentityUser,IdentityRole>().AddDefaultTokenProviders()
    .AddEntityFrameworkStores<AppilicationDbContext>();
    //builder.Services.AddDbContext<AppilicationDbContext>(options =>
    //options.UseSqlServer(connectionString));
builder.Services.AddScoped<IUnitOfWork, UnitOfWork>();
builder.Services.AddSingleton<IEmailSender, EmailSender>();
builder.Services.AddRazorPages().AddRazorRuntimeCompilation();
var app = builder.Build();

// Configure the HTTP request pipeline.d
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.UseAuthentication();
app.UseAuthorization();
app.MapRazorPages();
app.MapControllerRoute(
    name: "default",
    pattern: "{area=customer}/{controller=Home}/{action=Index}/{id?}");

app.Run();