Blazor 10

How to Work with Neon Database in Blazor?

ChandradevLeave a comment


If you’re building modern SaaS apps with Blazor, choosing the right database matters. Recently, Neon has become a popular serverless PostgreSQL option — especially for startups and indie developers.

In this article, you’ll learn:

  1. What Neon Database is and why you should consider it
  2. How to connect Neon to a Blazor project using EF Core Power Tools
  3. CRUD operation with Emp Table

Neon is a serverless PostgreSQL database platform built for the cloud.

Unlike traditional PostgreSQL hosting, Neon separates:

  • Storage
  • Compute
  • Branching

This means:

  • You can scale compute independently
  • You can pause databases when idle
  • You can create instant database branches (great for testing)
  • You only pay for what you use

✅ Why Use Neon with Blazor?

If you’re building SaaS with:

  • Blazor Server
  • Blazor WebAssembly + API
  • ASP.NET Core Web API
  • Microservices on Azure / AWS

Neon gives you:

🔹 Serverless Scaling

Perfect for MVP and side projects — no need to manage infrastructure.

🔹 Instant Branching

You can create database branches like Git branches — ideal for staging and feature testing.

🔹 PostgreSQL Compatible

Works seamlessly with:

  • EF Core
  • Dapper
  • Npgsql
  • Any PostgreSQL client

🔹 Free Tier Available

Excellent for indie developers and early-stage SaaS.

Connecting Neon Database to Blazor Using EF Core Power Tools

Now let’s connect Neon to your Blazor project.

Step 1 — Create Database in Neon

  1. Go to Neon dashboard
  2. Create a new project
  3. Create Emp table on Neon database
  4. Copy the connection string

It usually looks like this:

Step 2: Come to Visual studio 2026 and make ensure to install these two extensions


Now create the Blazor Web APP project and right click on solution explorer and do reverse engineering like this


Now it will create context file like this

Now keep connection string in AppSetting.json file 

"ConnectionStrings": {
  "DefaultConnection": "SSL Mode=Require;Trust Server Certificate=True;Persist Security Info=True;Password=XXXXXXX;Username=XXXXXX;Database=neondb;Host=ep-delicate-feather-a8ncqnpt-pooler.eastus2.azure.neon.tech"
},


Now for full code, please refer my GitHub repo


https://github.com/Chandradev819/BlazorApp51.git

New Book Release: Protecting Blazor Web Apps and WebAssembly from Real-World Attacks

ChandradevLeave a comment

I’m excited to announce that my latest book,
Protecting Blazor Web Apps and WebAssembly from Real-World Attacks,
is now available on Amazon in Kindle and Paperback editions.

This book is written specifically for Blazor Web App and Blazor WebAssembly developers who want to build secure, production-ready applications and avoid the security mistakes that commonly appear in real-world projects.

Why Blazor Security Matters in Real-World Applications

Blazor is a powerful framework, but most security issues in Blazor applications do not come from the framework itself.

In real production systems, vulnerabilities usually arise due to:

  • Incorrect authentication and authorization configuration
  • Trusting client-side data too much
  • Poor API security and token handling
  • Misunderstanding Blazor WebAssembly security boundaries
  • Missing HTTPS enforcement and production hardening

I’ve seen these issues repeatedly while working on real Blazor Web Apps and WebAssembly projects.
This book documents those real-world attack scenarios and explains how to prevent them using practical, Blazor-specific security patterns.

What You’ll Learn in This Blazor Security Book

This book provides a clear and practical understanding of Blazor security in real-world scenarios.

You’ll learn:

  • How security works in Blazor Web App and Blazor WebAssembly hosting models
  • Secure authentication and authorization patterns for Blazor applications
  • How to prevent common attacks such as XSS, CSRF, and API abuse
  • Safe handling of user input, application state, and browser storage
  • How to secure JavaScript interop without introducing vulnerabilities
  • Protecting APIs using JWT, rate limiting, and resource-based authorization
  • Preventing data leaks, SQL injection, and over-posting vulnerabilities
  • Secure deployment practices, including HTTPS enforcement and production hardening
  • Practical security checklists for real-world Blazor projects

Each chapter includes clear explanations, secure coding patterns, and practical examples that you can apply immediately in your own Blazor applications.

Blazor Security Topics Covered

This book focuses on practical security, not theory.

Key areas covered include:

  • Blazor authentication and authorization pitfalls
  • Blazor WebAssembly security limitations and best practices
  • API protection strategies for Blazor applications
  • Secure state management and browser storage usage
  • Preventing common OWASP Top 10 issues in Blazor apps
  • Production hardening techniques for Blazor deployments

The goal is simple: help you build Blazor applications that are secure by design.

Who This Blazor Security Book Is For

This book is ideal for:

  • Blazor Web App developers
  • Blazor WebAssembly developers
  • .NET developers building production web applications
  • Freelancers and teams deploying Blazor apps to real users

If you’re building anything beyond demos or tutorials, this book will help you think about Blazor security the right way from day one.

Where to Buy the Book

The book is now available on Amazon:

I’ve intentionally kept the pricing affordable so that more developers can access practical Blazor security guidance.

Final Thoughts on Securing Blazor Applications

Security is often addressed too late—usually after an incident or vulnerability has already occurred.

My goal with this book is to help Blazor developers:

  • Avoid common real-world security mistakes
  • Build safer applications from the start
  • Deploy Blazor Web Apps and WebAssembly projects with confidence

If you’re serious about building secure, production-ready Blazor applications, this guide will help you get there.

Thank you for your continued support and for being part of the Blazor developer community.

10 Blazor Coding Mistakes I See in Real Projects (and How to Avoid Them)

ChandradevLeave a comment

Blazor is a powerful framework for building modern web applications using C#, but in real-world projects, I repeatedly see the same mistakes that hurt performance, maintainability, and security.

After working on enterprise and SaaS Blazor applications for years, here are the 10 most common Blazor coding mistakes I see in production — and what you should do instead.

1. Putting Business Logic Directly in .razor Files

Many Blazor apps start simple, but over time .razor files turn into massive files full of logic.

Why it’s a problem

  • Hard to test
  • Difficult to maintain
  • Poor separation of concerns

Better approach

  • Move logic to code-behind files (.razor.cs)
  • Or use service classes and inject them into components

Razor files should focus on UI, not business rules.

2. Ignoring Proper Naming Conventions

Inconsistent naming is one of the fastest ways to make a Blazor codebase confusing.

Common mistakes

  • Components named test.razor, page1.razor
  • Methods like DoStuff() or Handle()

Better approach

  • Use clear, intention-revealing names
    InvoiceList.razor, UserProfileCard.razor
  • Follow consistent casing and suffix rules

Good naming is not optional — it’s a productivity multiplier.

3. Overusing @code Blocks Instead of Reusable Services

Developers often copy and paste logic between components.

Why this hurts

  • Code duplication
  • Bugs fixed in one place but not others

Better approach

  • Extract shared logic into services
  • Register them using dependency injection

Blazor’s DI system is there for a reason — use it.

4. Incorrect State Management

State bugs are subtle and painful.

Common issues

  • Relying too much on static variables
  • Losing state on refresh (especially in WASM)
  • Confusing scoped vs singleton services

Better approach

  • Understand component lifecycle
  • Use scoped services wisely
  • Persist important state explicitly

State management should be intentional, not accidental.

5. Calling APIs Directly from Components Everywhere

Calling APIs inside every component leads to tight coupling.

Why it’s risky

  • Hard to mock
  • Hard to refactor
  • Poor error handling consistency

Better approach

  • Create API service layers
  • Centralize error handling and retries

Your components will become cleaner instantly.

6. Not Handling Errors Gracefully

Unhandled exceptions in Blazor can break the entire UI.

Common mistakes

  • No try/catch around async calls
  • No user-friendly error messages

Better approach

  • Wrap async operations carefully
  • Use error boundaries
  • Log errors properly

Production apps must fail gracefully.

7. Poor Folder Structure

Flat or random folder structures don’t scale.

What I often see

  • All components in one folder
  • No separation between pages, shared components, and features

Better approach

  • Feature-based folders
  • Clear separation for:
    • Pages
    • Components
    • Services
    • Models

Structure is a form of documentation.

8. Ignoring Performance Basics

Blazor performance issues are usually self-inflicted.

Common mistakes

  • Heavy OnAfterRenderAsync
  • Unnecessary re-rendering
  • Large component trees

Better approach

  • Use @key correctly
  • Minimize re-renders
  • Measure before optimizing

Small changes can have a huge impact.

9. Hardcoding Configuration Values

Hardcoded URLs, keys, and flags appear far too often.

Why this is dangerous

  • Security risks
  • Difficult environment changes

Better approach

  • Use appsettings.json
  • Environment-specific configuration
  • Secure secrets properly

Configuration should never live in UI code.

10. Treating Blazor Like JavaScript Frameworks

Blazor is not React or Angular.

Common mistake

  • Forcing JS-style patterns into Blazor
  • Ignoring C# and .NET strengths

Better approach

  • Embrace strong typing
  • Use C# patterns
  • Leverage .NET libraries

Blazor shines when you use it the Blazor way.

✅ Final Thoughts

Most Blazor problems are not framework issues — they’re coding standard issues.

Once you apply consistent rules for:

  • Naming
  • Structure
  • State
  • Error handling
  • Performance

your Blazor apps become cleaner, faster, and easier to scale.

Want a Complete Blazor Coding Standard?

This article is adapted from my book:

📕 Blazor 10 Coding Standards & Best Practices
A practical guide covering:

  • Real-world naming conventions
  • Component design rules
  • Performance & security practices
  • Enterprise-ready Blazor patterns

Get the book on Amazon USA: https://lnkd.in/gdFV8btm

Get the book on Amazon IN: https://lnkd.in/gtuS5RtK

Announcing My New Book: Blazor 10 Coding Standards & Best Practices

ChandradevLeave a comment

I’m excited to share that my new book, Blazor 10 Coding Standards & Best Practices, is now officially published on Amazon Kindle — with the paperback edition!

👉 Get the book on Amazon USA: https://lnkd.in/gdFV8btm
👉 Get the book on Amazon IN: https://lnkd.in/gtuS5RtK

This book is a practical, experience-driven guide for writing cleaner, faster, and more maintainable Blazor applications across Blazor Server, WebAssembly, and the new unified Blazor model in .NET 10.

Why I Wrote This Book

As I worked on multiple Blazor applications over the years, I noticed a common challenge:
developers quickly learn Blazor basics, but struggle to maintain consistent, scalable, and high-quality code as their projects grow.

Blazor gives us a lot of flexibility — but without standards, codebases become:

  • harder to maintain
  • unpredictable in behavior
  • tangled with performance issues
  • difficult for teams to collaborate on

I wanted to create a guide that solves this problem:
a clear, concise, real-world reference for what good Blazor code looks like.

This book is the result of that mission.

What’s Inside the Book?

This 60-page handbook focuses on practical standards you can apply immediately in any Blazor project.

🔹 Component Architecture & Structure

Learn how to create clean, organized components that scale with your application.

🔹 Blazor Naming Conventions

A full chapter dedicated to consistent naming standards for:

  • components
  • parameters
  • events
  • services
  • models
  • folders & namespaces
  • files and UI elements

Good naming is the foundation of clean code and professional Blazor development.

🔹 Rendering & Performance Rules

How to use @key, avoid unnecessary re-renders, and prevent expensive operations in markup.

🔹 Lifecycle Best Practices

A practical guide to using OnInitialized, OnParametersSet, OnAfterRender, and Dispose correctly.

🔹 State Management Guidelines

Predictable patterns for handling local, cascading, and shared state across your UI.

🔹 API Usage Standards

Typed HttpClient rules, async best practices, error handling, DTO usage, and efficient API design.

🔹 EF Core Guidelines for Blazor

How to avoid blocking calls, structure queries, and keep UI clean from data-access logic.

🔹 JSInterop Rules

Safe, predictable patterns for integrating JavaScript into Blazor applications.

🔹 Security Best Practices

Common Blazor-specific security pitfalls and how to avoid them.

🔹 Reusable Component Patterns

Templated components, dynamic components, metadata-driven UIs, and more.

🔹 100-Point Blazor Code Review Checklist

A complete review guide you can use for your own apps or for professional code audits.

Who This Book Is For

This book is ideal for:

  • Blazor developers of all levels
  • .NET developers learning modern web UI
  • Teams building enterprise Blazor applications
  • Freelancers and consultants delivering Blazor solutions
  • Anyone who wants cleaner, faster, more maintainable Blazor code

Whether you’re building SaaS products, enterprise dashboards, or internal tools, this guide will help you avoid common pitfalls and accelerate development.

A Contribution to the Blazor Community

Blazor is evolving fast, but many developers struggle with:

  • inconsistent structure
  • lifecycle confusion
  • unpredictable rendering
  • poor component communication
  • repetitive mistakes

This book provides unified, practical standards the community can adopt immediately to build higher-quality applications.

My goal is simple:
to help Blazor developers write professional-grade code with confidence.

How to enable WebAuthN, passkeys, and Entra ID in Blazor WASM 10

ChandradevLeave a comment

As passwordless authentication becomes the new standard, developers are turning to WebAuthn, passkeys, and Microsoft Entra ID to build secure, user-friendly login experiences. With the release of Blazor WebAssembly (WASM) 10, integrating these technologies is more streamlined than ever.

Step 1: Understand the Key Concepts

Entra ID: Microsoft’s cloud-based identity platform (formerly Azure AD) that supports modern authentication protocols including FIDO2.

WebAuthn: A W3C standard that allows secure authentication using public key cryptography.

Passkeys: Credentials stored on a device or cloud account that replace traditional passwords.

Step 2: Set Up Your Blazor WASM 10 Project

Step 3: Register your app in the Microsoft Entra admin center.
https://entra.microsoft.com

Step 4: Now configure the wizard

Now run the application,


It will add all the required NuGet package for us.

In Session Storage, It is maintaining the state using best pattern and practice.

✅ Final Thoughts

Blazor WASM 10 makes it easier than ever to build secure, passwordless web apps. By combining WebAuthn, passkeys, and Entra ID, you can offer users a seamless and phishing-resistant authentication experience. Now you can also use in Blazor 8,9,10. No need to remember password.