The .NET 4 Framework has over 100 new and improved features! Do you know them all? This demo-heavy talk is perfect for those who never have used .NET 4 and want to upgrade their skills as well as developers using it today wanting to learn something new! We will cover some of the big features you may have seen and a lot of the smaller power features that you may not have seen. These features will make your life as a developer easier!

1. Power Features in .NET 4 Presented by Robert MacLean  @rmaclean

2. Introduction Level 200 A tour: Lots of features– QUICKLY Show something for everyone!

3. Focus .NET 4 has over 100 new and improved features! Too many for an hour or even a day. Our focus: BCL + FCL Base class library Framework class library

4. Problems How do I know if this person is using x64 so I can optimise my code? I want to save files where my users can find them easily, like their My Documents or the Desktop? I need to loop over files in this directory… but I want it to be easy and fast! I would love to use bitwise flags in my code to set options! (I have lots of problems)

5. Demo A bunch of smaller features in the core

6. Summary Environment.Is64BitOperatingSystem Environment.Is64BitProcess Easy options to find out about the environment Environment.GetFolderPath Environment.SpecialFolder Easy options to find those important paths Enumerators for Files & Folders FINALLY some generic love! Enum Flags Math made easy

7. Problem I need smarter design time error detection I need promises on what my methods will accept & return I need runtime error checking

8. Demo Code Contracts in .NET 4

9. Summary Code Contracts baked into the Framework Tooling is a separate download Great for design time help both in your own code and code you consume/expose to others Sandcastle can use this to augment your documentation

10. Problem I need to improve application performance My application pulls lots of data from a database or webservice Some of it is pretty static 10

11. Demo Cache is king

12. Summary Memory cache is awesome Per process only Designed for you to build more cache stores, like a database or file system Go and see AppFabric Caching

13. Problem I need to build applications that are context aware I’m building an application that needs maps and location services 13

14. Demo System. Device. Location

15. Summary Awesome feature, especially with all these GPS enabled tablets Easy to use Can use a software based GPS if hardware is not available

16. Session Summary Small useful features Is64BitOperatingSystem, Is64BitProcess, GetFolderPath, SpecialFolder, File/Folder enumerators, FLAGS! Better code with code contracts Better performance thanks to memory cache Context aware computing with System.Device.Location

17. Thank YOU! Robert MacLean www.sadev.co.za (slides + demo scripts) @rmaclean