The spreadsheet engine parsed typed input with the invariant culture while
displaying values with the current culture, breaking the edit round-trip on
non-en-US hosts and making comma-decimal entry (10,50) impossible.
Workbook gains a Culture property (defaults to CurrentCulture) which the
component stamps from its inherited Culture parameter. It drives:
- Cell input parsing (CellData type inference), including day-month date
handling for cultures where the group and date separators collide (de-DE)
- Edit text and display rendering (GetValue, GetValueAsString, GetDisplayText)
- Number format rendering - format codes stay canonical invariant tokens while
separators, month names, and AM/PM designators follow the culture
- Formula entry and display via the new FormulaLocalizer (Excel FormulaLocal
semantics: ';' argument separators and ',' decimals in comma-decimal
cultures, lenient comma acceptance where unambiguous, canonical invariant
storage)
- Dialog input (data validation, conditional format, filter) via shared
conversion helpers on SpreadsheetDialogBase
XLSX and CSV files read and write canonical invariant values regardless of
the workbook culture, including autofit column widths. Malformed formulas now
surface as error trees instead of an unhandled lexer exception. Number format
parsing is cached (hard-bounded) since CellView reparsed per render.
Includes localization demos for the Spreadsheet and Document Processing
sections and culture test suites.
Note: headless code on non-en-US hosts now parses string values with the
host culture; set Workbook.Culture explicitly (or to InvariantCulture) for
host-independent processing.
Make the spreadsheet usable with a screen reader and fully operable by keyboard,
keeping the virtualized cell hot path perf-neutral, with no breaking change
beyond the intended one (the toolbar becomes Tab-navigable).
- role="application" on the root + an isolated, self-rendering live-region
announcer (RadzenLiveRegion + SpreadsheetAccessibility) that speaks the active
cell (address, value, frozen-row header, position, state), selection size, and
structural actions (sort/filter/insert) without re-rendering the grid.
- Contextual keyboard gate: Tab moves the active cell in the grid but stays native
in the chrome; F6/Shift+F6 cycle regions (ribbon/toolbar/formula bar/grid/sheet
tabs) - the WCAG 2.1.2 escape. Full nav set added: Home/End, Ctrl+Home/End,
Ctrl+A, Ctrl+Arrow edge-jump, Ctrl+Space/Shift+Space, PageUp/Down, Ctrl+D/R fill;
RTL arrow swap; IME/"Home types H" guard; F2, Ctrl+Y; Shift+F10 context menu.
- Accessible names on every toolbar tool + SelectBar item (localized via nameof);
inner editor gets role=textbox + a mode-specific label via InputAttributes.
- Image/chart keyboard layer (Ctrl+Alt+5 select/cycle, arrows move, Size dialog
resize), undoable column/row resize, Alt+/ shortcut-help dialog, dialog focus
restore.
- 19 new bUnit/xUnit tests; full suite green; verified live in Chrome.
- Edited value cells now repaint: fire the changed cell's notification even
inside a command batch (only dependent recalc is deferred to EndUpdate).
- Table sort excludes the header (and totals) row by sorting DataBodyRange;
the cell-menu and context-menu sorts are now table/auto-filter aware.
- Re-apply active filters after a sort (and on sort undo) so filtered-out
rows stay hidden by value.
- Enable Merge, Borders, Conditional and Data Validation tools when a range
is selected by subscribing to Selection.Changed.
- Keep the worksheet prefix on cross-sheet references in the formula-bar
syntax highlighter (use the raw token text).
Adds regression tests for all of the above.
Rename the 34 public toolbar tool components and the two public base classes
to the RadzenSpreadsheet* convention in the Radzen.Blazor namespace, matching
RadzenHtmlEditor*. This removes name collisions (Color, Bold, Open, Save...),
makes them discoverable via the Radzen prefix, and drops the special
@using Radzen.Blazor.Spreadsheet.Tools a custom toolbar previously needed.
Make Open and Save work in a custom toolbar: they now read the cascaded
context instead of host-wired parameters. Add ISpreadsheet.LoadWorkbookAsync
(one host render, reused by the built-in Open) so the grid refreshes on load;
Save derives the workbook from the cascaded Worksheet.
The internal dialogs and ConditionalFormatRuleType stay in their sub-namespace.
