reading excel file using WCF Service

Question

I am trying to read excel file which is located in my local server directory using WCF service. I tried implementing using Microsoft.Office.Interop.Excel as well as OfficeOpenXML references but both of them cannot be imported in WCF service. I just have to read certain cells in the excel sheet. 

How to implement this in WCF service. Any help will be highly appreciated.