1. C# Present and Future Marita Paletsou Software Engineer

2. Agenta Brief History C# 5.0 Basic Features.NET Compiler Platform New IDE Experience C# 6.0 New Features

3. Brief History C# 1.0 VS 2002 - 2003.NET 1.0 - 1.1 C# 2.0 VS 2005.NET 2.0 C# 3.0 VS 2008 - 2010.NET 3.0 - 3.5 C# 4.0 VS 2010.NET 4.0 C# 5.0 VS 2012 - 2013.NET 4.5 Generics Static Classes Nullable Types Anonymous Methods LINQ Query & Lamda Expressions Extension Methods TPL DLR Named & Optional Params async + await Caller Info Managed Code

4. Synchronous vs Asynchronous Synchronous: Execution in a single series Wait one task to finish before move to another Bad User Experience Asynchronous: Run time-consuming operations concurrently Return as soon as an operation is completed Better User Experience

5. Asynchronous Programming Patterns Asynchronous Programming Model BeginMethodName and EndMethodName Event-based Asynchronous Pattern MethodNameAsync and MethodNameCompleted Task-based Asynchronous Pattern Single method returns Task or Task

6. async + await Return types: Task void Let compiler do the hard work How does it work?

7. async void Only for event handlers Caller has no information when async void is completed Caller is unable to catch exceptions from an async void

8. Demo

9. Caller Infromation Attributes Debugging, tracing, error handling in runtime Argument types: [CallerMemberName] [CallerFilePath] [CallerLineNumber] Apply to optional parameters

10. Demo

11. Opening up VS 2013 Community Edition - Free full featured IDE.NET Server Core “Roslyn” Compiler

12. New IDE Experience Quick Fixes Renaming Tool Introduce Local Colorization Quick Info Signature Help

13. C# 6.0 New Features (1) Using Static Classes using System.Console; WriteLine("My message"); Await Calls in catch and finally try { //Do some work } catch (Exception ex) { await Task.Delay(200); } finally { await Task.Delay(200); }; Exception Filters catch (Exception ex) if (ex.Message.Contains("Cannot divide")) Null Conditional Operator member operator: ?. index operator: ?[]

14. C# 6.0 New Features (2) nameof Expressions throw new ArgumentNullException(nameof(value)); Dictionary Initializers var myDict = new Dictionary () { [1] = "My Name" }; Auto-Property Initializers Only Getter: public Guid guid { get; } = new Guid(); Getter/Setter: public int studentYearOfBirth { get; set; } = 1993; Epression Bodied Properties & Functions public string firstName => string.Format("{0} {1}", firstNm, lastNm); public int age() => DateTime.Now.Year - yearOfBirth;

15. Demo

16. Useful Links Visual Studio 2013 Community Edition: http://www.visualstudio.com/products/visual-studio-community-vs Visual Studio 2015 Preview &.NET 4.6 Preview: http://www.visualstudio.com/en-us/downloads/visual-studio-2015- downloads-vs “Roslyn” Compiler: http://roslyn.codeplex.com/ http://source.roslyn.codeplex.com/

17. Microsoft Virtual Academy for Devs Όλα τα trainings που χρειάζεσαι δωρεάν σε ένα site! /game development / /web development / /cloud development / /mobile development / /C#-XAML-HTML/ /app development/ /visual studio και πολλά άλλα… www.microsoftvirtualacademy.com MVA

18. Session Evaluation Your feedback is important and valuable Submit before the event’s close session to WIN prizes 2 ways to access Go to m.itprodevconnections.gr Ask for an Evaluation Sheet from the registration desk

19. Get In Touch www.facebook.com/marita.paletsou @MaritaPaletsou paletsou@hotmail.comwww.codespot.gr

20. Q&AQ&A Questions And Answers

21. Thank you!