how do i reflect datas from UI to excel in VC#

Question

Hi

I'd like to build a frontend for Excel, which shows (full screen) at an exhibition, so that people walking past can just type in their name and email address, and it will be entered into the appropriate columns in my Excel sheet.

I want the code in c#.. Can anyone help me in this..

Name: ____________
Email: ____________
Submit button
After clicking the submit button, the appropriate values for the name and email should be stored in my excel sheet.
 
Note:   I don want to use Interop, And no need to use DataBase..

Any ideas people? Thanks in advance!