KARLI WATSON is consultant at Infusion Development (www.infusion.com), a technology architect at Boost.net (www.boost.net), and a freelance IT specialist, author, and developer. For the most part, he immerses himself in .NET (in particular C# and lately WPF) and has written numerous books in the field for several publishers. He specializes in communicating complex ideas in a way that is accessible to anyone with a passion to learn, and spends much of his time playing with new technology to find new things to teach people about. During those (seemingly few) times where he isn?t doing the above, Karli will probably be wishing he was hurtling down a mountain on a snowboard. Or possibly trying to get his novel published. Either way, you?ll know him by his brightly colored clothes. You can also find him tweeting online at www.twitter.com/karlequin, and maybe one day he?ll get around to making himself a website. Karli authored chapters 1 through 14, 21, 25 and 26. CHRISTIAN NAGEL is a Microsoft Regional Director and Microsoft MVP, an associate of Thinktecture, and owner of CN Innovation. He is a software architect and developer who offers training and consulting on how to developMicrosoft .NET solutions. He looks back on more than 25 years of software development experience. Christian started his computing career with PDP 11 and VAX/VMS systems, covering a variety of languages and platforms. Since 2000, when .NET was just a technology preview, he has been working with various .NET technologies to build numerous .NET solutions. With his profound knowledge of Microsoft technologies, he has written numerous .NET books, and is certified as a Microsoft Certified Trainer and Professional Developer. Christian speaks at international conferences such as TechEd and Tech Days, and started INETA Europe to support .NET user groups. You can contact Christian via his web sites, www.cninnovation.com and www.thinktecture.com and follow his tweets on www.twitter.com/christiannagel. Christian wrote chapters 17 through 20. JACOB HAMMER PEDERSEN is a Senior Application Developer at Elbek& Vejrup. He just about started programming when he was able to spell the word ?BASIC?, which, incidentally is the first programming language he ever used. He started programming the PC in the early ?90s, using Pascal but soon changed his focus to C++, which still holds his interest. In the mid ?90s his focus changed again, this time to Visual Basic. In the summer of 2000 he discovered C# and has been happily exploring it ever since. Primarily working on the Microsoft platforms, his other expertise includes MS Office development, SQL Server, COM and Visual Basic.Net. A Danish citizen, Jacob works and lives in Aarhus, Denmark. He authored chapters 15, 16, and 22. JON D. REID is a software engineering manager atMetrix LLC, an ISV of field service management software for the Microsoft environment. He has co-authored a variety .NET books, including Beginning Visual C# 2008, Beginning C# Databases: From Novice to Professional, Pro Visual Studio .NET, and many others. Jon wrote chapters 23 and 24. MORGAN SKINNER began his computing career at a young age on the Sinclair ZX80 at school, where he was underwhelmed by some code a teacher had written and so began programming in assembly language. Since then he?s used all sorts of languages and platforms, including VAX Macro Assembler, Pascal, Modula2, Smalltalk, X86 assembly language, PowerBuilder, C/C++, VB, and currently C# (of course). He?s been programming in .NET since the PDC release in 2000, and liked it so much he joined Microsoft in 2001. He now works in premier support for developers and spends most of his time assisting customers with C#. Morgan wrapped up the book by authoring chapter 27. You can reach Morgan at www.morganskinner.com.