Comments by LesF (Top 1 by date)

You should look at the Office API for .Net, as what you really want is to get an instance of a Excel worksheet object and use it's methods and properties.

Your code will look almost the same as the VB code, as you will be using a very similar API. Try the Microsoft guides first, they often have good examples, such as:

[How to automate Microsoft Excel from Microsoft Visual C#.NET]