Quote:Below is the reference code i got on net.
And what does it do?
Simple: it reads each row, and inside each row, it reads each column.
So all you have to do is remove the inner loop and replace it with a line of code that accesses the one column you are interested in, convert it appropriately to match your ping code, and pass it to your existing ping code for processing.
To be honest, if you can't work that out for yourself with a simple piece of code like you show, then you need to go right back to first principles in your C# course and learn them properly. The idea of "development" is as the word suggests: "The systematic use of scientific and technical knowledge to meet specific objectives or requirements." BusinessDictionary.com[^]
That's not the same thing as "have a quick google and give up if I can't find exactly the right code".
You will never find exactly the right code to fit your needs - you are expected to be able to either write it yourself, or understand it well enough to modify existing code so it fits your needs.