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

Introduction

Level 200A tour: Lots of features – QUICKLYShow something for everyone!

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

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)

Demo

A bunch of smaller features in the core

Summary

Environment.Is64BitOperatingSystem Environment.Is64BitProcessEasy options to find out about the environment

Environment.GetFolderPathEnvironment.SpecialFolderEasy options to find those important paths

Enumerators for Files & FoldersFINALLY some generic love!

Enum FlagsMath made easy

Problem

I need smarter design time error detectionI need promises on what my methods will accept & return I need runtime error checking

Demo

Code Contracts in .NET 4

Summary

Code Contracts baked into the FrameworkTooling is a separate downloadGreat for design time help both in your own code and code you consume/expose to othersSandcastle can use this to augment your documentation

Problem

I need to improve application performanceMy application pulls lots of data from a database or webserviceSome of it is pretty static

10

Demo

Cache is king

Summary

Memory cache is awesomePer process onlyDesigned for you to build more cache stores, like a database or file systemGo and see AppFabric Caching

Problem

I need to build applications that are context awareI’m building an application that needs maps and location services

13

Demo

System.Device.Location

Summary

Awesome feature, especially with all these GPS enabled tabletsEasy to useCan use a software based GPS if hardware is not available

Session Summary

Small useful features• Is64BitOperatingSystem, Is64BitProcess,

GetFolderPath, SpecialFolder, File/Folder enumerators, FLAGS!

Better code with code contractsBetter performance thanks to memory cacheContext aware computing with System.Device.Location

Thank YOU!

Robert MacLeanwww.sadev.co.za (slides + demo scripts)@rmaclean