To read/write from excel spreadsheet using C#

Question

I need to make a program that writes some data to an excel spreadsheet. Something basic along the lines of First name, last name, phone number, e-mail per row with each cate

Answer 1

Depending on the level of sophistication needed:

• Write a comma-separated values (CSV) text file. Excel will open it, however you wont get any formatting.
• Write an HTML table to file and name the file as filename.xls.
• Write out an XML file in a format that Excel can open.
• Call Excel directly and get it to build the spreadsheet. (See cherhan's answer)