Can any one explain the process of adding excel file in C# and What are the requirements for that?
Is it necessary to install MS Excel in the system for using of Excel in C#
You can read data from Excel spreadsheet without having Excel installed, using ADO.Net. Here is a sample for how to do this.
However, your question is a little vague. Since you do not have Excel installed, which of these do you really want to do:
You may get more useful answers if you clarify.