Description

100% managed code Excel file manipulation engine & Excel & PDF report generation for .NET, Xamarin.iOS, Xamarin.Android, Xamarin.Mac.

Feature overview
Create applications, webservices and mobile device apps that read and write Excel files on the fly and fast with FlexCel Studio for .NET
Native .NET components (no additional OLE/dlls required) allowing to read, create and modify native Excel .XLS and .XLSX files without needing to have Excel installed
Supported Excel 2 to 2021 file formats
Runs on .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, .NET 4.6, .NET 4.7, .NET 5, .NET 6, .NET Core, Windows Universal Apps, Windows Phone 8.1, Windows Store 8.1, Xamarin.iOS, Xamarin.Android, Xamarin.Mac and Mono
Exceptionally fast and solid hand tuned .XLS & .XLSX engine capable of generating thousands files per minute
Able to modify .XLS and .XLSX files and keep almost everything existing on the original file, from macros to activex objects
Support for formula recalculation supporting over 300 Excel functions
Ability to read and write encrypted .XLS and .XLSX files, including Office 2007, 2010 and 2013 encryption
Completely written in C# 100% managed code, with NO interop and NO p/invokes
Extensive API is available with which you can programmatically write and read files, with formatting info, images comments, etc.
Native PDF file export / report generation (PDF/A 1, 2 and 3 support)
Export to HTML in HTML 5 strict or XTHML 1.1 and fully standards compliant
Natively print and preview Excel files
Export to SVG
Report Engine that allows to create complex reports using Excel as your report designer, so your final users can modify them. You can use images/comments/conditional formats/merged cells/pivot tables/charts and almost anything you can think of on those reports
Full feature overview
Fully documented. FlexCel has a documentation center with guides, tips, full reference for every method and more than 50 working examples to help you get started.

v7.26

• New : Support for new Error codes introduced by Excel
• New : Support for longer strings in formulas
• New : Support for longer data validation lists
• New : Removed support for older Visual Studio integrations
• New : Removed support for .NET 6 and 7
• New : Official support for visual studio 2026, .NET 10 and 11 Preview
• Improved : New multi-platform APIMate
• Improved : All mobile demos were rewritten to use the latest technologies
• Improved : Ability to abort a LoopOverUsedRange before the range has been fully visited
• Fixed : When converting a xlsx file to xls, if the selected row or column was bigger than the maximum allowed in xls, FlexCel would throw an exception. Now it ignores it, and selects the larger cell address that can be saved in xls. This way you can still save the file as xls.
• Fixed : We support now the character as intersection operator
• Fixed : Some invalid xlsx files could throw an overflow exception
• Fixed : Small glitches in rendering file could happen when zoom was very small (less than 10%)
• Fixed : Images added with the API weren''t showing in the macOS26 or iOS26 previewers
• Fixed : Fonts with spaces weren''t quoted when creating SVG files, and some browsers wouldn''t display the fonts

Additional Information