From Razor Pages to Blazor

Why Migrate to Blazor?

For years, many .NET applications have relied on Razor Pages or MVC for web development. These approaches are reliable, but they also limit flexibility, interactivity, and long-term maintainability.

Enter Blazor — a modern, component-based UI framework from Microsoft that allows full-stack development using C# instead of JavaScript-heavy frontends.

At Assemblysoft, we don’t recommend large rewrites. Instead, we deliver value through controlled, low-impact migrations using proven strategies — helping your teams modernize safely, incrementally, and confidently.

The Assemblysoft Migration Strategy

We migrate legacy interfaces section-by-section, without affecting business operations. Here’s how we do it:

✅ 1. Start Where You Are

We begin by identifying screens in your existing system that are:

• Frequently updated
• Hard to test or scale
• In need of UX improvements

Let’s imagine a simple interface: a “Search Students” page where admins can:

• Search for students by name
• View results
• Edit or delete a record

Traditionally, this page is built using Razor Pages like this:

[Razor Page View]

• Search textbox
• Table of results
• "Edit" and "Delete" links

✅ 2. Introduce a Blazor Component Without Breaking Anything

We embed a new Blazor component directly inside your existing page:

<component type="StudentSearchComponent" render-mode="Server" />

The logic and rendering are handled by Blazor — but the rest of the app remains untouched. This means:

• No full-page rewrites
• No changes to navigation
• Minimal risk

✅ 3. Break the UI Into Clean, Reusable Blocks

We split the new component into subcomponents, each focused on a single responsibility.

[StudentSearchComponent]

├── <SearchBox />

├── <ResultsTable />

└── <EmptyStateMessage />

This structure is:

• Easy to maintain
• Quick to test
• Reusable across the application

✅ 4. Introduce a Data Service Layer

Instead of putting business logic in the page, we move it into a service layer.

Now the UI talks to a service, not a database directly. This makes it easier to:

• Test functionality
• Switch from mock data to real data
• Reuse logic in other apps (e.g. mobile, APIs)

✅ 5. Build Confidence and Momentum

Because we migrate incrementally, your teams gain immediate benefits:

• Less duplication of logic
• Better UI experience for users
• Confidence in modern .NET without high disruption

Each new section uses modern Blazor components, but lives side-by-side with the existing system. As confidence grows, we can transition more screens, or fully adopt Blazor routing later.

Benefits for Your Business

🔒 Low Risk - We migrate features individually, avoiding major disruptions.

🧱 Modular Architecture - Your system becomes easier to maintain and extend.

🔄 Reusable Components - Invest once, reuse across multiple screens or applications.

🔌Future-Ready - You gain a modern UI architecture that works on web, desktop (via .NET MAUI), and mobile.

🛠 Seamless Integration - We don’t break what works — we modernise what matters.

What We Offer: Blazor Modernization Options

At Assemblysoft, we help you modernize with confidence by offering the full spectrum of Blazor technologies. Whether you're looking for a faster UI, cross-platform support, or a seamless path forward from legacy systems — we’ve got you covered.

A Safer Path to a Better Future

At Assemblysoft, we believe software should evolve — not break. Our strategy for migrating Razor Pages to Blazor is built on:

✅ Strong architecture
✅ Incremental rollout
✅ Real-world experience
✅ Low-friction results

Whether you're aiming to reduce maintenance costs, improve UX, or prepare for mobile/web parity — we’ll help you get there step by step.

Migrating from Razor Pages or MVC to Blazor doesn’t need to be an all-or-nothing leap. By extracting functionality into isolated components and embedding them into existing pages, teams can progressively modernize their applications.

This approach keeps the door open to Blazor’s interactive potential while maintaining the stability of your current platform — a win-win for enterprise developers looking toward the future.

👋 Want to Learn More?

We’d love to discuss your migration goals. Contact Assemblysoft today to explore how we can help modernize your .NET application — without starting from scratch.