ASPNET Identity Deep Dive — Advanced User Management in .NET

DodaTech Updated 2026-06-28 1 min read

In this tutorial, you'll learn about ASPNET Identity Deep. We cover key concepts, practical examples, and best practices to help you understand and apply this topic effectively.

ASP.NET Core Identity provides a complete membership system with support for custom user stores, external authentication, and fine-grained authorization.

// Custom user with additional properties
public class AppUser : IdentityUser
{
    public string? OrganizationId { get; set; }
    public int ScanQuota { get; set; } = 100;
    public DateTime? LastLoginAt { get; set; }
}

// Custom UserStore
public class AppUserStore : UserStore<AppUser, AppRole, AppDbContext, string>
{
    public AppUserStore(AppDbContext context, IdentityErrorDescriber describer)
        : base(context, describer) { }

    public override async Task<IdentityResult> CreateAsync(AppUser user)
    {
        user.LastLoginAt = DateTime.UtcNow;
        return await base.CreateAsync(user);
    }
}

// Configure Identity
builder.Services.AddIdentity<AppUser, AppRole>(options =>
{
    options.Password.RequiredLength = 10;
    options.Password.RequireDigit = true;
    options.SignIn.RequireConfirmedEmail = true;
}).AddEntityFrameworkStores<AppDbContext>().AddDefaultTokenProviders();

Custom Identity implementations let you extend the membership system with domain-specific user properties and validation.

← Previous ASPNET Entity Framework Migrations — Managing Database Schema Changes Next → ASPNET JWT Multi-Tenant Authentication — Tenant-Aware JWT in .NET

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