ReoGrid — Community Edition (V3)

Fast and powerful open-source .NET spreadsheet component for building Excel-like experiences in WinForms and WPF applications.

🇯🇵 日本語のREADMEはこちら

🚀 Upgrade to ReoGrid V4

This repository contains ReoGrid V3 (Community Edition / MIT License).

ReoGrid V4 is now available with major improvements. V4 comes in two editions — Professional and Enterprise — with identical features. Choose based on support duration and deployment scale.

What's new in V4

| Feature | V3 Community (this repo) | V4 | |---|:---:|:---:| | WinForms support | ✅ | ✅ | | WPF support | ✅ | ✅ (greatly improved) | | Excel XLSX import/export | ✅ | ✅ | | Formulas & charts | ✅ | ✅ (more functions) | | Lazy loading (1M+ rows) | — | ✅ | | Multi-row column headers | — | ✅ | | Data source API (IDataSource) | — | ✅ | | Conditional styles | — | ✅ | | Custom conditional filters | — | ✅ | | Excel-compatible format patterns | — | ✅ | | 3-level cell lock control | — | ✅ | | WinAppDriver UI test support | — | ✅ | | Floating-point precision correction | — | ✅ | | Rendering performance | Fast | Even faster | | Technical support | — | ✅ (included) | | License | MIT (free) | Commercial | | Price | Free | See pricing |

Edition comparison

| | Professional | Enterprise | |---|:---:|:---:| | Deployable devices | Up to 3 | Unlimited | | Technical support | 1 month | 3 months | | Features | Full V4 | Full V4 |

👉 Learn more & Purchase V4 📧 Questions? Contact us at support@reogrid.net

Features (V3 Community)

Excel (XLSX) import and export via OpenXML
Rich cell formatting (font, size, color, borders, alignment, wrapping, rotation)
Formulas and functions (SUM, COUNT, IF, VLOOKUP, and more)
Charts, images, and drawing objects
Merge cells, freeze panes, and split view
Sorting and AutoFilter (column filters)
Cell types and controls (checkbox, dropdown, hyperlink, button, etc.)
Grouping and outline for rows/columns
Printing and page setup
High performance with large worksheets
Extensible rendering and event model

Supported Frameworks

| Framework | Target | |---|---| | .NET 8 (Windows) | net8.0-windows7.0 | | .NET Framework 4.8 | net48 |

Installation

.NET CLI

dotnet add package unvell.ReoGrid.DLL

Package Manager Console (Visual Studio)

Install-Package unvell.ReoGrid.DLL

Quick Start

WinForms

using unvell.ReoGrid;

var grid = new ReoGridControl { Dock = DockStyle.Fill };
this.Controls.Add(grid);

var sheet = grid.CurrentWorksheet;
sheet["A1"] = "Hello ReoGrid";
sheet.Cells["B1"].Data = DateTime.Now;

// Load / Save XLSX
sheet.Load("input.xlsx");
sheet.Save("output.xlsx", FileFormat.Excel2007);

WPF (XAML)

<Window
    x:Class="MyApp.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:rg="clr-namespace:unvell.ReoGrid;assembly=unvell.ReoGrid"
    Title="ReoGrid WPF" Height="450" Width="800">
  <Grid>
    <rg:ReoGridControl x:Name="grid"/>
  </Grid>
</Window>

// Code-behind
var sheet = grid.CurrentWorksheet;
sheet["A1"] = "Hello ReoGrid";
sheet["B1"] = 123.45;

Screenshots

Read from Excel

Charts Charts

Cell Types and Controls

Freeze Panes

Group and Outline

Print Settings

Custom Appearance

Script and Macro

Documentation

Full documentation, API reference, and tutorials: https://reogrid.net/document
Getting started guide: https://reogrid.net/document/getting-started/

Demo Project

A runnable WPF sample project is available under the DemoWPF directory.

Contributing

Contributions to V3 Community are welcome! See CONTRIBUTING.md for guidelines.

For feature requests that go beyond V3 scope, consider ReoGrid V4 Enterprise which provides a commercially-supported, actively-developed codebase.

License

See LICENSE for full text.

About UNVELL

ReoGrid is developed and maintained by UNVELL Inc., a software company specializing in .NET UI components.

🌐 Website: https://reogrid.net
📧 Support: support@reogrid.net
🇯🇵 Japanese page: https://reogrid.net/jp

ReoGrid

Install / Use

README