Released: Apr 21, 2026

Updates in 2026 Volume 1 SP1 (33.2.3)

Features

• Web Spreadsheet Editor (JavaScript, Angular, React, Vue, ASP.NET Core & MVC)
  • Introduced support for custom function categories in the spreadsheet Insert Function dialog. Users can now create new categories, associate custom functions with them, and add category descriptions for better organization and discoverability.

Fixes

• Blazor Spreadsheet Editor
  • Fixed an unhandled exception that occurred when dynamically updating the Blazor Spreadsheet data source with corrupted or zero byte...

Released: Mar 31, 2026

Updates in 2026 Volume 1 (33.1.46)

Fixes

• Blazor Spreadsheet Editor
  • Fixed an exception that occurred when loading a corrupted or unsupported Excel file in the spreadsheet.

Released: Mar 24, 2026

Updates in 2026 Volume 1 (33.1.45)

Features

• Web Spreadsheet Editor (JavaScript, Angular, React, Vue, ASP.NET Core & MVC)
  • Added support for creating charts from discontinuous ranges (multiple non-adjacent rows, columns, or cell blocks). Linked charts now update automatically when any referenced range changes. Supported chart types include column, bar, area, pie, donut, line, and scatter.
  • Server-side import efficiency: Improved core server-side file import processes to reduce memory usage and speed up processing of large Excel...

Released: Mar 16, 2026

Updates in 2026 Volume 1 (33.1.44)

Features

• Web Spreadsheet Editor (JavaScript, Angular, React, Vue, ASP.NET Core, and ASP.NET MVC)
  • Discontinuous chart range support - Users can now create charts from multiple non-adjacent rows, columns, or cell blocks for greater flexibility when visualizing selective or scattered data. Linked charts automatically update whenever any referenced range changes. This capability is fully supported across major chart types, including column, bar, area, pie, donut, line, and scatter.
  • Improved file...

Released: Mar 10, 2026

Updates in 2025 Volume 4 SP1 (32.2.9)

Fixes

• Blazor Spreadsheet Editor
  • Enhanced editing responsiveness in the Blazor Spreadsheet for WebAssembly (WASM), resolving noticeable delays when modifying cell values.

Released: Mar 3, 2026

Updates in 2025 Volume 4 SP1 (32.2.8)

Fixes

• Blazor Spreadsheet Editor
  • Fixed an issue where dynamic updates to the datasource property were not reflected in the spreadsheet.

Released: Feb 5, 2026

Updates in 2025 Volume 4 SP1 (32.2.3)

Features

• Blazor Spreadsheet Editor
  • Added support for applying cell formatting programmatically via the CellFormatAsync method. This enhancement enables developers to customize cell styles using a CellFormat object, including:
    • Background color.
    • Font color.
    • Font size.
    • Font family.
    • Font weight.
    • Font style.
    • Text decoration.
    • Horizontal alignment.
    • Vertical alignment.
  • Formatting can be applied to a specified cell range or the current selection, providing greater flexibility and control over spreadsheet...

Released: Jan 13, 2026

Updates in 2025 Volume 4 (32.1.23)

Fixes

• Blazor Spreadsheet Editor
  • Fixed an issue where selection became misaligned when importing an XLSX file.

Released: Dec 30, 2025

Updates in 2025 Volume 4 (32.1.21)

Fixes

• Web Spreadsheet Editor (JavaScript, Angular, React, Vue, ASP.NET Core & MVC)
  • Issue with "left border not applied properly in the merged cells during scrolling" has been resolved.
  • Issue with "the value being pasted repeatedly during cut-and-paste operations in multi-range selections" has been resolved.
  • Issue with "top borders being applied incorrectly when the adjacent cell above is a merged cell" has been resolved.
  • Issue with "bullet points not displaying when pasting tables from...

Released: Dec 16, 2025

Updates in 2025 Volume 4 (32.1.19)

Features

• Web Spreadsheet Editor (JavaScript, Angular, React, Vue, ASP.NET Core & MVC)
  • Threaded comments - To facilitate reviews, rich, threaded discussions are now supported on any cell. Users can reply, edit, delete, and resolve comments, with visual indicators for quick scanning. A dedicated review pane for navigation across threads, and JavaScript APIs help create, read, update, delete, and resolve comments while preserving thread state, author, and timestamps.
  • Notes in the ribbon...