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

https://reogrid.net

• 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

• .NET 8 (Windows): net8.0-windows7.0
• .NET Framework: net48

• .NET CLI

  dotnet add package unvell.ReoGrid.DLL

• Package Manager Console (Visual Studio)

  Install-Package unvell.ReoGrid.DLL

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);

• 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

  using unvell.ReoGrid;
  
  // In Window Loaded
  var sheet = grid.CurrentWorksheet;
  sheet["A1"] = "Hello ReoGrid";
  sheet.Cells["B1"].Data = 123.45;
  
  // Load/Save XLSX
  // sheet.Load("input.xlsx");
  // sheet.Save("output.xlsx", FileFormat.Excel2007);

• Or create the control in code

  var grid = new unvell.ReoGrid.ReoGridControl();
  Content = grid;
  var sheet = grid.CurrentWorksheet;
  sheet["A1"] = "Hello from code";

• Getting started, API reference, and advanced topics: https://reogrid.net/document

Read from Excel

Print Settings

Charts

Cells Freeze

Cell Types and Controls

Group and Outline

Custom Control Appearance

Script and Macro Execution

• A runnable WPF sample app is available under the DemoWPF project.

MIT License

Copyright (c) UNVELL Inc. 2012-2026, All rights reserved.