Blazor allows developers to build rich, interactive web UIs with reusable components. But what happens when you need to render components based on user actions, backend data, or a CMS layout? That’s where dynamic component rendering comes in a powerful feature that lets you render components at runtime without directly referencing them in your Razor markup.

What Is Dynamic Component Rendering?

Dynamic component rendering means you can display a component in your UI by specifying its type and parameters programmatically. Instead of writing static Razor code, you tell Blazor what component to load, along with any data it needs, and Blazor takes care of rendering it on the fly.

This is especially useful when the structure of your UI isn’t fully known until the app is running. For example, a blog platform might use this technique to render different types of content blocks (text, image, video) based on data from a backend system.

How It Works Behind the Scenes

Blazor provides a built-in component that enables dynamic rendering. You specify the component type you want to render and pass any required parameters using a key-value structure. Blazor then instantiates and displays that component at runtime.

This approach is often used in:

  • CMS-style applications where page layouts and content blocks are stored in a database
  • Plugin systems or dashboards where users can add, remove, or rearrange widgets
  • Admin panels where components change based on user roles or settings

Benefits of Dynamic Rendering

  • Flexible UI Composition: Load different components based on user actions, roles, or data structures.
  • Supports CMS Architectures: Ideal for content-driven systems where page layout is defined outside the app.
  • Clean and Maintainable Code:  Avoid hardcoding every UI variation by handling it through runtime logic.
  • Future-Proof UI Logic: Add or swap components without touching Razor markup — making your app more modular and scalable.

Conclusion

Rendering components dynamically in Blazor is a total game-changer. It gives your app the flexibility to change layouts, content, or even entire features on the fly all without hardcoding everything. Whether you’re building a CMS, a dashboard, or a plugin system, this approach makes your life easier and your app more future-proof. It’s all about working smarter, not harder.