Easily read, write, and modify Microsoft Excel (XLS) files, even on systems that do not have Microsoft Excel installed. Syncfusion Essential XlsIO is compatible with both the old Biff 8 format XLS files and the Office 2007 XLSX format files. Essential XlsIO’s extensive feature set includes support for cell formatting, creating and applying custom styles, applying conditional formatting, formula processing, charts, sparklines, security settings, etc. This .NET library features a full-fledged object model similar to the Microsoft Office COM libraries. Syncfusion Essential XlsIO does not use COM interop and is available with full 100% C# source code. A one-year subscription for unlimited technical support and updates is included with every license. Essential XlsIO is also available as part of Syncfusion Essential Studio Reporting Edition.