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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# News & Commentary

Understanding C#: Using BackgroundWorker to make your UI responsive

Someone once told me that he could tell a form was built by a novice C# developer if it stopped responding when he pressed a button. I'm not 100% sure I agree, but I definitely think that an intermediate or advanced C# developer should be able to build a form that stays responsive even when the program is doing something CPU intensive. Luckily, C# and .NET give us a simple way to do that using the BackgroundWorker class. Not only is it a great tool to let your programs do more than one thing at once, it's a good way for novice and intermediate C# developers to get started with threading.

Understanding C#: XML Comments

As C# developers get more experienced, there are a lot of things they pick up along the way that are really useful and important to know, even if they aren't necessarily directly code-related. One of those topics is XML comments, and I've been surprised at how many developers -- even really experienced ones -- don't use them, or even know about them. They're really useful, and they can help you build better software, even if they don't actually change the way your programs behave.

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...

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