Extracting Data from a listbox in Another Application

Question

Hi , 

I need to extract data from a third party application's ListBox and store it into a .csv .

would like to do something  like this article http://www.c-sharpcorner.com/UploadFile/SamTomato/clicking-a-button-in-another-application/

I am new to C# and any sample code would be greatly appreciated . I can have the Listbox id through SPY++ as shown in the above article.

Thanks & Regards

Sid