1. Keith Elder Microsoft MVP http://keithelder.net/blog/ It’s the new wave…man…..

3. Abstraction from low level programming Imagine you had to write programs in Assembly today? Thank goodness we’ve moved on! Languages in.Net are written in what is called Managed Code. This means the code you write is “managed” by another intermediate process therefore increasing productivity. An unmanaged code example is programming in C where the developer is managing all of the memory, security, exceptions, etc in their program.

4. Choice of Language Supports 44 different languages

5. Cheaper Maintenance.Net Windows includes free application server IIS Java Requires server OS plus additional application server (BEA, Websphere, WebObjects)

6. One platform to rule them all

7. Extensive APIs – Increased Productivty Base Class Libraries System System.CodeDom System.Collections System.Diagnostics System.Globalization System.IO System.Resources System.Text System.Text.RegularExpressions Framework Libraries System.Xml System.Data System.Security System.Web System.Drawing

8. Simple Deployment

9. Scalable Architecture

10. Huge Ecosystem

11. The Coolest IDE Evar!

12. Let’s get the money thing out of the way.

13. Myth Busting.Net Cost: $0.00.Net has been freely available for the Windows platform since the beginning. Visual Studio is the tool of choice of.Net developers. A free version is available called Visual Studio Express. An open source version of.Net called Mono is freely available which allows.Net applications to run on Linux and Mac OSX.

15. What is.Net? A free language agnostic platform for building applications: Windows Windows Mobile Smart Clients RIA (rich internet applications) / Silverlight Web Services Outlook Plugins Workflows *Unix (through Mono)

16. What is.Net Under The Hood? A base collection of libraries Mscorlib.dll, System.dll, System.core.dll Framework libraries Ado.Net, Winforms, Asp.Net, LINQ, WPF, WCF, WF A collection of utilities Wsdl, WcfTestClient, Web server, ngen, MSBuild

17. What is.Net Under The Hood? Compiler(s) Currently.Net supports 44 programming languages Common Language Runtime (CLR)

18. What Does the CLR Do? Memory Management Thread Management Garbage Collection Security Exception Handling

19. From Your Code to the CLR

21. Start with some code (C# Example)

22. Compile It using the C# Compiler (csc.exe)

23. Result of Compilation: CIL

24. Putting It All Together

25. C:\Windows\Microsoft.NET\

26. A Collection of Libraries More than one version of.Net can be installed at the same time. The Global Assembly Cache (GAC) makes this possible. (C:\windows\assembly )

27. Just a bunch of DLLs These are the majority of the System*.dll files located in the v2.0 version of the framework. These DLLs make up the base class libraries and the framework libraries.

29. What is a DLL? Dynamic Linked Library A file that contains: Code A collection of classes Data Resources Images, Bitmaps, Icons, Settings, XML, etc DLLs have versions 1.0.0.0 DLLs also have meta information Who wrote it, copyright etc (right click a DLL in explorer and hit properties then click on the details tab).Net DLLs can be disassembled once compiled Reflector DLLs can be written in one language and used in another

30. How are DLLs Created?

31. Programs Can Reference One Or More DLLs The MyLibrary project is a DLL that we can reference in our console application. As a matter of fact, ANY program can reference our MyLibrary.dll. You’ll notice from the screen shot above our console app is referencing other DLLs as well. DLLs allow programs to share large amounts of functionality without having to worry about single files.

32. Our Program using MyLibrary

33. Compiling our Program.cs to a DLL csc /target:library Program.cs Pointless but we can!

34. Where is.Net? The GAC Reflector

35. Learning.Net Pick a language and stick with it. Recommendations C# - if you know C, C++, PHP, Java or other curly brace languages VB.Net – if you have a lot of VB6 programming F# - functional programming language, it is new, coming in VS2010, should start exploring it now Learn a new language every year. By the time you retire you will have covered most of the languages.Net supports! Learn a new technology every year..Net has plenty to keep you busy for at least a decade or two. Focus on the following Namespaces within the framework System System.Data System.Xml System.Linq MSDN Virtual Labs, Channel9, Blogs, Conferences, local Codecamps,.Net User Groups, Books (Safari)

36. Information Overload The.Net platform is huge. You will hit information overload, focus on what you will use day in and day out. Everything else is just a search away.

37. Links.Net Framework on MSDN http://msdn.microsoft.com/en-us/netframework/default.aspx Base Class Libraries http://msdn.microsoft.com/en-us/netframework/aa569603.aspx Virtual Labs http://msdn.microsoft.com/en-us/virtuallabs/default.aspx Finding Local.Net Groups http://communitymegaphone.com/ Conferences MIX (web programmers), Tech Ed, PDC, DevLink, Codemash, VS Live, Dev Connections, and more Code Camps http://www.dayofdotnet.org Safari Online http://safari.oreilly.com/ Visual Studio Express http://www.microsoft.com/express/ Mono http://www.mono-project.com/Main_Page Blog http://keithelder.net Podcast http://deepfriedbytes.com