Hi to all. I need a free library (or not too expensive) for .NET to work with the excel document. I need to read data, modify, save and add charts into the document. Or in another way, I need a free library for creating and inserting charts into the excel document (only for charts). I have found FlexCel and SmartXLS, but FlexCel doesn't support the charts (can't create), while SmartXLS has a small functionality. Thanks for any help.