Announcing Fluent UI Blazor v5 RC1 — A New Era for Fluent UI in Blazor

Today we are thrilled to publish the first Release Candidate of Fluent UI Blazor library v5! This major release marks a significant evolution for the library, bringing a new foundation built on top of the latest Fluent UI Web Components, a powerful new FluentLayout component, a game-changing Default Values system, and first-class Localization support. And lots of new components, each more powerful than the last.

Let’s walk through what’s new and why we think v5 is the best version of Fluent UI Blazor yet.

Overview

Although the team is now fully focused on delivering the great v5 version of the library in the near future, they managed to release a significant update for v4. This version includes a highly demanded feature that warranted the jump to a new minor version by itself: hierarchical data support in the DataGrid!

For this 4.14 release, the highlights include:

• Hierarchical DataGrid - Expandable/collapsible rows with the IHierarchicalGridItem interface
• Updated Fluent UI System Icons to version 1.1.318
• Documentation and demo site improvements
• Fixed 3 additional DataGrid issues
• Enhanced 5 other components with updates and fixes

For the complete overview of all changes, visit the What’s New page on the documentation site.

Overview

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Overview

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The FluentUI Blazor library is undergoing significant updates with the development of Fluent UI Web Components v3, which will be integrated into our upcoming v5 release.

This new version promises to bring substantial improvements in performance, usability, and modern implementations, leveraging the experience and feedback gathered over the past years. While the transition from v4 to v5 will involve breaking changes and won’t be a simple drop-in replacement, the team is committed to providing comprehensive documentation and support to simplify the migration process. With a support model extending until at least November 2026, users can confidently adopt v5 for new projects while continuing to use v4 safely and securely.