Program.cs

using Identity.Data.Abstract;
using Microsoft.AspNetCore.Identity;

using Microsoft.EntityFrameworkCore;

var builder = WebApplication.CreateBuilder(args);
builder.Services.AddControllersWithViews();
builder.Services.AddDbContext<IdentContext>(options =>
      {
          options.UseSqlite(builder.Configuration["ConnectionStrings:Sql_connection"]);


      });
builder.Services.AddIdentity<IdentityUser, IdentityRole>().AddEntityFrameworkStores<IdentContext>().AddDefaultTokenProviders();
builder.Services.AddScoped<IEmailSender, SmptEmailSender>(i =>
    new SmptEmailSender(
        builder.Configuration["EmailSender:Host"],
        builder.Configuration.GetValue<int>("EmailSender:Port"),
        builder.Configuration.GetValue<bool>("EmailSender:EnableSSL"),
        builder.Configuration["EmailSender:Username"],
        builder.Configuration["EmailSender:Password"])
);
builder.Services.Configure<IdentityOptions>(options =>
        {
            options.Password.RequiredLength = 6;
            options.Password.RequireNonAlphanumeric = false;
            options.Password.RequireLowercase = false;
            options.Password.RequireUppercase = false;
            options.Password.RequireDigit = false;

            options.User.RequireUniqueEmail = true;
            // options.User.AllowedUserNameCharacters = "abcdefghijklmnopqrstuvwxyz";

            options.Lockout.DefaultLockoutTimeSpan = TimeSpan.FromMinutes(5);
            options.Lockout.MaxFailedAccessAttempts = 5;

            options.SignIn.RequireConfirmedEmail = false;
        });
var app = builder.Build();

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

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

app.Run();