What’s New

beta.15 — March 29, 2026

Excel Export (Zero Dependencies)

The DataGrid now exports to .xlsx format using a built-in SpreadsheetML writer. No DocumentFormat.OpenXml dependency. Numbers are auto-detected, headers are bold, and it respects current sort/filter/visibility.

<ArcadiaDataGrid TItem="Employee" Data="@employees" ShowToolbar="true">
    ...
</ArcadiaDataGrid>

The toolbar shows both CSV and Excel buttons. Or call ExportToExcelAsync() programmatically.

Typed Filter Inputs

Columns now auto-detect their data type when using Property:

  • Boolean columns render a tri-state dropdown (All / True / False)
  • DateTime columns render a native date picker
  • Numeric columns render a number input with comparison operators

Column Pinning UI

Right-click any column header to see Pin to Left, Hide Column, and Sort Ascending options. Pinned columns stay fixed during horizontal scroll.

Localization

14 Text* parameters let you override every UI string without IStringLocalizer:

<ArcadiaDataGrid TItem="Employee" Data="@employees"
                 TextSearch="Rechercher..." TextFilter="Filtrer"
                 TextPageInfo="Page {0} sur {1}" TextExcel="Exporter" />

1,348 Tests

  • 1,097 unit tests (bUnit)
  • 240 E2E tests (Playwright) covering all controls
  • 11 performance benchmarks

Bug Fixes

  • Data labels showed scientific notation (3.5E+2) instead of readable numbers
  • Width parameter ignored when set after responsive mode
  • Palette dropdown had no effect (demo used hardcoded colors)
  • Cell focus flashed previous cell before moving to clicked cell
  • Color contrast violations fixed for WCAG AA compliance

beta.13 — March 27, 2026

Arcadia.UI Package (9 Components)

New package with essential UI infrastructure: Dialog, Tabs, Tooltip, Sidebar, Accordion, Breadcrumb, Card, Badge, Avatar

All accessible, themeable, zero JavaScript.

DataGrid Features

  • Multi-column sort — Shift+Click headers for secondary/tertiary sort with priority badges
  • Quick filter — toolbar search across all visible columns
  • Batch editing — save/discard multiple changes with OnBatchCommit
  • Context menu — ContextMenuTemplate for right-click row actions
  • State persistence — StateKey saves to localStorage, OnStateChanged for server-side
  • Clipboard copy — Ctrl+C copies selected rows as TSV
  • Property parameter — Property="Salary" instead of Field="@(e => (object)e.Salary)"
  • SelectionMode enum — None / SingleRow / Multiple
  • EmptyTemplate — custom empty state content

Charts Features

  • 4 financial indicators — SMA, EMA, Bollinger Bands, RSI
  • SyncGroup — linked crosshair and zoom across charts
  • Rubber band zoom — ZoomMode="selection"

beta.10 — March 26, 2026

Arcadia.DataGrid on NuGet

First public release of the DataGrid package with sorting, filtering, paging, grouping, selection, inline editing, virtual scrolling, column templates, CSV export, and keyboard navigation.

6 Named Themes

Obsidian, Vapor, Carbon, Aurora, Slate, Midnight — each with distinct visual identity, applicable to both Charts and DataGrid.

For the complete changelog, see CHANGELOG.md on GitHub.