I am using the Open XML SDK to open an Excel xlsx file and I try to read the cellvalue on position A1 in each sheet. I use the following code:
using (Spreads
Another option: Export your data to an html table and utilize stylesheets to specify the read only cells. See this page for more: http://www.c-sharpcorner.com/UploadFile/kaushikborah28/79Nick08302007171404PM/79Nick.aspx