Hi Alomgir,
We are very sorry for the delay caused in getting back to you.
As you have reported, we have created the sample to copy the styles to the generated rows using ITemplateMarkersProcessor. Also we have tested the sample with the Assembly version 8.3.0.21 (3.5 .Net framework). Could you please try the attached sample and let us know if this helps you.
Sample:
http://help.syncfusion.com/samples/xlsio.web/supports/95765.zipPlease let us know if you have any queries.
Regards,
Sathish