FlexSheet for WPF enables you to import and export files with different formats. You can import data from Excel 97-2003 Workbook (.xls), Excel Workbook (.xlsx), and Text File (.txt) formats and save it in C1FlexSheet control. Data from C1FlexSheet can be exported to Excel 97-2003 Workbook (.xls), Excel Workbook (.xlsx), Text File (.txt), HTML File (.htm or.html), Comma Separated Values (.csv), and PDF File(.pdf) formats.