How can i check if my local network connection is fine ?

Hi guys!

I've a problem with my program...

i need to connect with a network printer, but... before i need to check if i'm connect in a local network and if i can use this connection.

It's possible?

i need to find only this answer to finish my program.

One more thing, i'm working with a class to care all about printes.

:D i'm waiting for any help

thanks