What’s New in Blazor 2025 Volume 4: Performance Enhancements and Key Updates

The Essential Studio^® 2025 Volume 4 release of Syncfusion Blazor is all about performance, developer productivity, and platform alignment. This update brings:

• Full .NET 10 support for seamless integration with the latest ASP.NET Core runtime and language features.
• Chat UI graduated to production-ready for building modern conversational interfaces.
• New Block Editor (Preview) for structured content creation.
• Targeted enhancements across Charts, DataGrid, TreeGrid, Diagram, File Manager, Gantt Chart, Rich Text Editor, and Scheduler.

If you build data‑heavy, interactive, or real‑time applications, these updates reduce friction and help you ship reliable experiences faster.

Why this release matters

This release delivers significant enhancements that empower developers to build faster, richer, and more collaborative applications with less effort.

• Alignment with .NET 10 and ASP.NET Core features.
• Measurable performance gains in DataGrid and TreeGrid.
• Richer charts and templating without custom code.
• Improved Rich Text Editor usability.
• AI AssistView for streamlined prompt composition.
• Collaborative Diagram editing with real-time SignalR sync.
• Better developer ergonomics through templates, events, and predictable APIs.

General updates

.NET 10 support

All Syncfusion Blazor components now support .NET 10 for development, build, and runtime.

New Component

Block Editor (preview)

The Block Editor offers a modern, block‑based authoring experience for creating structured content. It supports multiple block types, slash commands, rich text formatting, inline content, undo/redo, and extensibility through events.

The key features are,

• Multiple block types: Headings, paragraphs, lists, checklists, quotes, callouts, dividers, tables, images, toggle blocks.
• Slash commands for quick insertion.
• Rich text formatting and inline content.
• Undo/redo and event‑driven extensibility.

Easily get started with the Blazor Block Editor using a few simple lines of C# code, as shown below.

<SfBlockEditor><SfBlockEditor>

Note: For hands-on experience, refer to the demo, documentation, and API reference.

Production‑ready Component

Chat UI

The Chat UI component is now production‑ready. It provides a responsive chat interface with real‑time messaging and a customizable design. The new File Attachments feature enables users to upload and send files, with inline image previews and secure downloads. For more details, explore the demo.

Key enhancements

Here’s a closer look at the major enhancements across components.

DataGrid enhancements

• Performance improvements
  The Blazor DataGrid is optimized for faster initial rendering and grouping with virtualization.
  • Initial rendering: Approximately 22.9% reduction.
  • Grouping: Approximately 98.0% reduction.
  • Grouping (expand all): Approximately 97.4% reduction.
• Row and column span
  Merge adjacent identical cells vertically, horizontally, or both to improve readability. View the demo for a detailed walkthrough.

Here’s a preview of the feature in Data Grid.

Tree Grid improvements

• Row and column spanning
  Cell merging is identical to DataGrid for hierarchical datasets.

  

• Custom sorting and custom aggregates
  This feature provides custom comparison logic and tailored summaries. Refer to the demos of custom sorting and custom aggregate for additional insights.
• Remote data with virtualization
  Load‑on‑demand virtualization with remote data binding. Discover more in the demo.
• Column chooser template and stacked header
  Customize the column chooser layout and use stacked headers in the same sample.  Find out more in the live demo.

Here’s a quick demo of the feature in action.

Rich Text Editor enhancements

• Markdown auto‑formatting
  Inline and block markdown are auto‑formatted as you type.  Learn more by exploring the demo. Here’s a quick demo of the feature in action.

  

• Line height and checklist
  Control line height and insert interactive checklists. View the demo for a detailed walkthrough. Here’s a preview of the feature in action.

  

• Drag‑and‑drop media
  Drop videos and audio files directly into the editor. Get hands-on with the demo for full details.
• Clipboard cleanup
  Strip unwanted inline styles during copy/cut for cleaner HTML.
• Authorization headers and HttpClient
  Attach tokens for secure Word/PDF export and use a custom HttpClient instance for configurable uploads.

Diagram enhancements

• Collaborative editing
  Multi‑user, real‑time synchronization for edits; changes are applied instantly across clients. Get hands-on with the documentation for full details. This GIF illustrates the feature’s step-by-step operation.

• Force‑directed tree layout
  Physics‑based layout that reduces overlaps and clarifies complex graphs. Discover more in the demo.
• Restrict node dragging within the swimlane
  Constrain node movement to the assigned swimlane for structured workflows.

AI Assist View enhancement

• Footer toolbar
  This release introduces a footer toolbar for seamless composition, featuring single-line and multi-line modes, built-in actions (Send, Attach, Clear), and support for custom items. Developers can define order, icons, tooltips, disabled states, and click handlers. The toolbar supports inline or bottom placement. Check the demo for additional insights. Here’s what the Footer toolbar looks like.

  

Charts enhancements

• Legend templates
  Customize legend item content per series/item for Charts and Accumulation Charts.  Find out more in the live demo.

  

• Linear and radial gradients
  Apply gradients to series, legend items, markers, tooltip markers, trendlines, and indicators in Charts and Stock Chart. View the demo for a detailed walkthrough.
• Stripline tooltip
  Show contextual tooltips on striplines to highlight thresholds and time windows. Dive into the demo to learn more.

File Manager enhancements

• Templates for large Icons view and Navigation pane
  Customize item cards and navigation nodes with thumbnails, metadata, and actions to enhance user experience. You can explore the demo for more details.

  

• Sequential upload
  Upload files and folders sequentially for predictable processing and lower server load. Learn more by exploring the demo.

Gantt Chart enhancements

• Undo/redo
  Revert or reapply recent changes to preserve workflows. Get hands-on with the demo for full details.
• Column validation
  Validate on add/edit to prevent invalid entries. Learn more by exploring the demo.  Take a look at how this functionality behaves.

Scheduler enhancement

• Custom toolbar
  Add, remove, and reorder built‑in or custom items using a non‑generic toolbar inside SfSchedule. Find out more in the demo showcase.

Quick start example.

<SfSchedule TValue="EventData" SelectedDate="new DateTime(2025, 12, 1)">
    <ScheduleToolBar>
        <ScheduleToolBarPrevious></ScheduleToolBarPrevious>
        <ScheduleToolBarNext></ScheduleToolBarNext>
        <ScheduleToolBarDateRange></ScheduleToolBarDateRange>
        <ScheduleToolBarToday></ScheduleToolBarToday>
        <ScheduleToolBarViews></ScheduleToolBarViews>
        <ScheduleToolBarCustom>
            <button class="e-btn e-flat">Custom Action</button>
        </ScheduleToolBarCustom>
    </ScheduleToolBar>
    <ScheduleEventSettings DataSource="@Appointments"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

After running the code, you’ll see this.

Conclusion

Thanks for reading! The Essential Studio 2025 Volume 4 release aligns Syncfusion Blazor with .NET 10, promotes critical components to production readiness, and introduces features that simplify complex UIs and large‑data scenarios.

For a hands-on look, explore our online demo and documentation of the Blazor components. You can check out our Release Notes and What’s New pages for the other updates in this release and provide your feedback in the comments below.

If you’re a Syncfusion user, you can download the setup from the  license and downloads page. Otherwise, you can download a free a 30-day free trial.

You can also contact us through our support forum, support portal, or feedback portal for queries. We are always happy to assist you!

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