Calling tabs in an Excel spreadsheet (C# in Visual Studio)

Question

Hello
I need to develope an application that will call each tab in my Excel spreadsheet...1 at a time and read data from rows/columns
Example:
Sheet1 is called and data is read from the Sheet1 into Visual Studio
Next call Sheet2 and data is read from the Sheet2 into Visual Studio
Next call Sheet3 and data is read from the Sheet3 into Visual Studio .....and so on
 
thanks
J