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Tony Northrup , a Boston-area network security consultant and technology author, developed his interest in home automation after renting an apartment where every light was controlled by pulling a string. Tony's wife, Erica, ensures his home hacking projects are user-friendly and reliable, while his cat, Sammy, mangles every project within paw's reach.…

Paul Zirkle has five years of mobile game programming experience and is currently a Lead Mobile Programmer at Konami Digital Entertainment. He has worked on over 40 titles, including porting, re-writing and full development. Occasionally, Paul is called upon to give lectures on game development at the University of Southern California.

Judith Bishop is a computer scientist, in Pretoria South Africa, specializing in the application of programming languages to distributed systems and web-based technologies. She is internationally known as an advocate of new technology. Her books on Java and C# have been published in six languages. She represents South Africa on IFIP TC2…

John Sharp is a principal technologist at Content Master, part of CM Group Ltd, a technical authoring and consulting company.

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Writing LINQ Queries with LINQPad

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C# Answers

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C# News & Commentary

Upcoming Webcast: LINQPad: Version 2 and Beyond - Live Event March 23, 2010

Join Joe Albahari (C# 4.0 in a Nutshell and LINQ Pocket Reference) in an interactive session on the new and upcoming features of LINQPad. We'll demonstrate support for C# 4.0, the new extensibility model and some exciting enhancements to autocompletion and other new developments in the next beta. You'll get a chance to talk with Joe on feature requests, future direction, and LINQPad's emerging role as a scratchpad for C# 4. Attendance is limited, so register now! Check out our Webcast page for on-demand videos of past webcasts and more upcoming live events!

Happening Today: Tour the Top 10 Treats in Entity Framework 4 - Join us for this Free Live Webcast @ 10am PT / 1pm ET

Visual Studio 2010 and .NET 4.0 bring us a new version of ADO.NET Entity Framework, called Entity Framework 4. From the designer, to the APIs to entire new feature sets to support agile development, even former EF skeptics are getting excited about this version. There is a lot to see. In this one hour webcast, Julia Lerman, who is currently working on the 2nd edition of Programming Entity Framework, will highlight the ten most significant changes to the Entity Framework. Join the webcast now!

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• The Science of Social Media Marketing

Understanding C#: Why make things private?

Andrew Stellman is the author of Head First C# and other books from O'Reilly. A reader on the Head First C# forum posted a question. It's actually a really good question, one that a lot of developers ask once they...

Understanding C#: Using virtual and override

One of our Head First C# readers posted a question on the book's forum: I don't understanding why I need to add 'virtual' keyword and 'override' keyword to make Penguin Fly() override Bird Fly(). [page 226] I think public class...

Getting Java, C# and Perl to speak the same language (with JSON)

I've been thinking a lot about architecture lately. It's partially because Jenny and I are going to do our Beautiful Teams talk at the ITARC 2009 conference next week. But it's also because I've been writing a lot of code...

Introducting the ADO.NET Entity Framework

Julia Lerman, the leading independent authority on Microsoft's Entity Framework, claims that this technology changes the game for .NET developers so that they no longer have to be concerned with the details of the data store as they write their applications. Now they can focus on the task of writing the applications, rather than accessing the date. The following is an excerpt from Programming Entity Framework, in which Julia introduces the technology and explains the concept of programming against a model, not against the database.

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