c# network programming

Question

Dear All

i have been searching for a day for books about c# network/socket programming and i found out that most of the books are published in the year 2002/2005, my question is

1- can i use these books to understand how to write network applications for c# 3.5 even though they are old and the framework that is used is 1.1?

it would be great if someone point me out to  books about the subject too.

Thanks