Spire.XLS for WPF is a professional Excel component which enables developers/programmers to fast generate, read, write and modify Excel document for WPF. Spire.XLS for WPF doesn't need Microsoft Office Excel Automation. It allows user to operate Excel document directly such as save to stream, save as web response, copy, lock/unlock worksheet, set up workbook properties, etc. As a professional WPF Excel component, it owns the ability of inserting content into Excel document and formatting cells. Spire.XLS for WPF supports Excel 97-2003, Excel 2007 and Excel 2010. New Version fixed bugs of reading and writing pivot and some bugs of Formatting,Cacluating engine, formula, alignment,etc.