do i need to install Microsoft Excel to be able to export xls file in c#, I have my application it run in my pc but when I test it in another pc that it don't contain Excel the application got errors !!
I see this link Using Microsoft.Office.Interop.Excel without actually having Excel?, I called my client and he tell me that he use open office and Microsoft office, I can use more than library
Depending on what you need you can use some library (free or commercial) for this: