Secure Login & Registration in .NET MAUI Using JWT Authentication

In this video, I’ll show you how to build a secure Login & Registration system in .NET MAUI using JWT Authentication 🚀.
We’ll work on both the JWT Web API (server) and the .NET MAUI client, covering everything from user registration to generating and storing JWT tokens securely.

If you haven’t watched the previous video where we created the JWT Web API, check the pinned comment for the link.

🔐 What you will learn in this video

How to add your Web API project into the MAUI solution

How to create a Register action inside the AuthController

Using GitHub Copilot to speed up your coding

Creating the RegisterModel with Email and Password

Validating user input and checking for existing accounts

Creating new users and assigning the default User role

Testing the Web API using Swagger

Verifying roles inside your database (AspNetRoles)

📱 Building the .NET MAUI Client

Creating a Services folder with an IAuthService interface

Creating a Models folder with AuthResponse (contains the JWT token)

Implementing AuthService using HttpClient

Handling LoginAsync and RegisterAsync

Saving JWT tokens using SecureStorage

Adding Microsoft.Extensions.Http to manage HttpClient

Registering HttpClient and services in MauiProgram.cs

Building the RegisterPage and LoginPage

Validating input, showing alerts, and navigating after success

Using dependency injection correctly throughout the app

Creating a ServiceHelper to simplify resolving services

📲 Testing on Windows & Android

Running the login and registration workflow on Windows

Testing on an Android emulator

Updating API URLs for Android (use 10.0.2.2 instead of localhost)

Switching from HTTPS to HTTP when using local development servers

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Feel free to leave your questions or suggestions for future videos!
See you in the next tutorial! 🚀