Blazor Webassembly Login Page

Web Development Software

I recently had the opportunity to work on a project that involved creating a login page using Blazor WebAssembly. Blazor WebAssembly is a powerful framework for building interactive web applications using C# and .NET. In this article, I will share my experience and delve into the details of how I implemented the login functionality.

Getting Started with Blazor WebAssembly

Before diving into the login page, let’s quickly discuss the basics of Blazor WebAssembly. Blazor WebAssembly allows you to write web applications in C# that run in the browser. It leverages WebAssembly, a low-level bytecode format supported by modern browsers, to execute the application code directly in the browser environment.

To get started, you’ll need to set up a Blazor WebAssembly project. If you haven’t done this before, you can follow the official documentation provided by Microsoft. Once you have your project up and running, you’re ready to start building the login page.

Designing the Login Page

Before jumping into the code, it’s important to have a clear understanding of the design and user experience you want to achieve with the login page. A well-designed login page should be intuitive, visually appealing, and secure.

In my project, I decided to keep the login page simple and clean. I used a minimalist design with a prominent login form in the center. I added input fields for the username and password, along with a “Remember Me” checkbox and a “Forgot Password” link. I also included a “Sign In” button to submit the login credentials.

Implementing the Login Functionality

Now let’s dive into the implementation details. In Blazor WebAssembly, you can use the built-in authentication and authorization support provided by ASP.NET Core. This makes it easy to implement the login functionality.

First, you’ll need to create a Login component. This component will handle the user login process and communicate with the server to authenticate the user’s credentials. Within the Login component, you can use the built-in authentication services and APIs provided by ASP.NET Core to handle the authentication process.

Here’s a simplified version of the Login component’s code:

@page "/login"

@inject AuthenticationStateProvider AuthenticationStateProvider


@if (!context.User.Identity.IsAuthenticated)


You are already logged in.


In this code snippet, we have a simple conditional rendering logic. If the user is not authenticated, the login form will be displayed. Otherwise, a message indicating that the user is already logged in will be shown.

To handle the form submission, you’ll need to add an event handler for the form’s submit event. Within this event handler, you can access the entered username and password, and use the authentication services to authenticate the user.

Adding Personal Touches

While working on this project, I added a few personal touches to enhance the overall user experience. For instance, I implemented client-side validation to ensure that the entered username and password met the required criteria. I also added CSS animations to provide visual feedback to the users when they interacted with the login form.

Additionally, I implemented a feature that allowed users to sign in with their social media accounts such as Google or Facebook. This provided a convenient alternative to traditional username and password-based authentication.


Building a login page with Blazor WebAssembly was a rewarding experience. Blazor WebAssembly makes it easy to create interactive web applications using C# and .NET, and the built-in authentication support provided by ASP.NET Core simplifies the implementation of login functionality.

If you are starting a new web project that requires a login page, I highly recommend considering Blazor WebAssembly. It offers the benefits of a modern programming language like C# combined with the power and flexibility of web development.

For more information on Blazor WebAssembly and how to get started, check out the official documentation here. Happy coding!