title: Program that works in all version of excel
body: <p>I have recently developed a Windows Form application which has several datagrids. My client needs to export the data into Excel. They are using different versions of Excel (i.e 2003,2007,2010,2013) but I'm using Office 2013. I have used excel 2013 references</p>
  
  <p><em><strong>(Microsoft excel 15.0 object library)</em></strong></p>
  
  <p>in my program. Recently, my client reported that the export option was not working. From my  investigation it seems that my application is working fine for those who are using Office 2013 but not working for previous Office versions.</p>
  
  <p>What can I do to make sure my application works in older versions of Excel?</p>