Marino Posadas is an independent senior trainer, writer, and consultant in Microsoft Technologies. He is a Microsof MVP in C#, Visual Studio, and Development Technologies; an MCT, MCPD, MCTS, MCAD, and MCSD; and was the former Director for Development in Spain and Portugal for Solid Quality Mentors. Marino has published 15 books and more than 500 articles on development technologies in several magazines and online publications. Topics covered in his books range from Clipper and Visual Basic 5.0/ 6.0 to C # and .NET- safe programming, to programming with Silverlight 2.0 and 4.0 and Web Standards. His latest books are Mastering C# and .NET Framework, Packt Publishing and The Guide to Programming in HTML5, CSS3, and JavaScript with Visual Studio. He is also a speaker at Microsof events, having lectured in Spain, Portugal, England, the USA, Costa Rica, and Mexico. You can follow him on Twitter as @MarinoPosadas (https://twitter.com/marinoposadas)