A Spreadsheet Control/Component by tmssoftware.com

Features:
- Generates Excel files from WinForms, WebForms ASP.NET, PocketPC applications, webservices 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) files without needing to have Excel installed.
- Supported Excel 97 file formats and up.
- Native PDF file export
- Exceptionally fast and solid hand tuned XLS engine capable of generating thousands files per minute.
- Able to modify xls files and keep almost everything existing on the original file, from macros to activex objects.
- Recalculation of more than 200 Excel functions.
- Ability to read and write encrypted xls files.
- Completely written in C# 100% managed code, with no interop and no p/invokes.
- Runs on .NET 1.1, .NET 2.0, Mono and the .NET Compact Framework.
- Templates can be stored inside your executable file, in a database or in any place from where you can access it as a stream.
- Extensive API is available with which you can programmatically write and read files, with formatting info, images comments, etc.
- Export to HTML in HTML 4.01 strict or XTHML 1.1 and fully standards compliant
- 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.