Looks like you are looking for books to developer networking applications in C#, lemme see what ones are good for you:
C# Network Programming by Richard Blum
Network programming in .NET : C# & Visual Basic .NET by Fiach Reih
Professional .NET Network Programming by Srinivasa Sivakumar
Hope this helps.
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by: mcgantsPosted on 2005-02-10 at 08:36:41ID: 13277175
A book that's won loads of awards (and one i use regularly) is:
Programming C#, 3rd Edition by Jesse Liberty (O'reilly) ISBN 0596004893
I suspect it's a little more in-depth than the book you've been reading but still doesn't address communications in much more than simple COM.
Network programming in .NET : C# & Visual Basic .NET by Fiach Reid ISBN: 1555583156
Covers telephony and TCP, UDP, sockets etc. and might be more what you are looking for - it's written for .NET but has all the code samples in C# as well as vb.net
Finally, .NET Framework Solutions: In Search of the Lost Win32 API by John Mueller ISBN: 078214134X
A slightly older book that covers direct hardware access etc and has all code on cd in c#
hope these help,
mcg