I am trying to use an Excel library like npoi, epplus, or closedxml to export a hierarchy like the one here in this telerik example:
http://demos.telerik.com/aspnet-ajax/grid/examples/export/exporthierarchicalgrid/defaultcs.aspx
Can someone please point me in the direction of some code examples to help me get started? I'm new to this. Would merge cells be used?
thanks!