Saving Excel workbook in SQL server using c#

Could anyone please help me out as to how we can save the excel workbook in
the database and

read it back.

I was able to convert the text files and image files into binary format and
save them to the

DB and finally able to retrive them back in the same format. But was unable
to do same for

the excel object.

Your help will be greatly appreciated.


Thanks,

regards,
jitender