SharpCell.Grid

A free (MIT) Excel-like spreadsheet control for .NET 8 and later, built on the SharpCell formula engine. It shows a worksheet the way Excel does: column and row headers, gridlines, each cell's value in its number format and its style (font, fill, borders, alignment, wrapping), the file's column widths and row heights, merged cells, frozen panes and text running on over empty neighbours. Cells are selected, typed into, deleted, pasted and undone with the mouse and keyboard as in Excel, the workbook recalculated after each change, and copied with their styles, ready to paste into Excel. Columns and rows are resized, fitted, inserted, deleted and hidden, the fill handle continues series and copies formulas, and the view zooms. Only the visible cells are read, so a sheet of a million rows scrolls like an empty one.

Try it in your browser: open your own .xlsx file; it is read on your computer and never uploaded.

Status: 0.x, viewing, selecting, copying to Excel, editing, the fill handle, rows and columns resized, inserted and deleted, and zoom. See the roadmap. The API may change between minor versions until 1.0.

Package	What it does
SharpCell.Grid	Geometry, hit testing, scrolling and painting, with no UI framework.
SharpCell.Grid.Avalonia	SpreadsheetView, the control for Avalonia UI.
SharpCell.Grid.Wpf	SpreadsheetView, the same control for WPF on Windows.

Install

dotnet add package SharpCell.Grid.Avalonia   # the control; brings SharpCell.Grid and SharpCell
dotnet add package SharpCell.Xlsx            # to read .xlsx files

For WPF, add SharpCell.Grid.Wpf instead of SharpCell.Grid.Avalonia.

Usage

Namespaces: SharpCell, SharpCell.Xlsx and SharpCell.Grid.Avalonia.

Workbook workbook = XlsxReader.Load(path);
workbook.Recalculate();

var view = new SpreadsheetView { Worksheet = workbook["Budget"] };

After changing cells or recalculating, call view.InvalidateVisual(). A runnable window is in samples/SharpCell.Grid.Sample.

Documentation

• Documentation site: getting started, what the grid shows, painting in other UI frameworks, API reference.
• Roadmap.
• For AI coding agents: llms.txt and llms-full.txt.

Support

SharpCell.Grid is maintained by one person in spare time, with no support obligations. A bug report needs a small .xlsx that shows the problem and a screenshot of the same cells in Microsoft Excel; an issue without both is closed. Security issues: see SECURITY.md. Contributing: see CONTRIBUTING.md.