In this session I have discussed what are the major features that makes me love C# as a language. I presented this in front of 250 audiences in Jadavpur University campus.

1. By Abhishek Sur
Website: www.abhisheksur.com
Email : contact@abhisheksur.com

2. .NET Infrastructure
User Interface Services Data Access
ASP.NET
Windows Windows Windows
(WebForms, Entity
Presentation Communication Workflow ADO.NET
MVC, Dynamic Framework
Foundation Foundation Foundation
Data)
WinForms Data Services LINQ to SQL
Cloud
(ODATA)
Core
Generics LINQ Dynamic Async
Base Class Library
Common Language Runtime

3. Agenda
• Delegates
• Events
Language • Generics
• Iterators
Features • Extension Methods
of C# • LINQ
• Dynamic Types
• Async

4. Delegates
 Delegates are special types
 Delegate points to Methods
 Delegates are not Function Pointers
Events
 Events are Wrappers to Delegates
 Cleaner pattern to handle Delegates
 Only use when you do require

5. Delegates & Events

6. Generics
 Type as Template
 Constraint on Generic Types
 It can be applied on Types, Method, Delegates
etc.
Extension Methods
 Extend your predefined Types without
inheritance
 Available when appropriate namespace is
available

7. Generics &
Extension Methods

8. Iterators
 Forms a State Machine which can pause –
Continue a method.
 We create Itreators using yield keyword in C#
which generates an IEnumerable.
 Any Collection can be represented by
Ienumerable
 Iterators represents a sequence (finite /
Infinite)

9. Iterators

10. Anonymous Language Object
 Object can exist in language without name
 Cleaner codebase.
 Anonymous methods are used as Closures.
 We use delegate to refer anonymous methods
and var for types.
LINQ
 Search inside Managed objects
 Simple projection, selection, grouping, joins
and many more…

11. Anonymous Types &
LINQ

12. Dynamic in .NET 4.0
 CLR is mostly static type
◦ Compile time type checking
 DLR added dynamism to .NET
◦ Run time type checking
 Object – Static type, base class
 var – is ALSO static type, compiler inferred
 dynamic – Evaluation deferred
 Expandable objects

13. Dynamic

14. Going Beyond… (Async)

15. New Asynchronous Pattern
 Contextual async & await pattern simplifies
complex Threading model or existing pattern
of coding
 Async is not about Concurrency but rather it is
truly asynchrony.
 It can easily plugged in without changing the
logic.
 Compiler generates state machine to resume
methods

16. Async & Await

18. Abhishek Sur, MVP (Client App Dev)
www.abhisheksur.com
Email: contact@abhisheksur.com
Twitter : @abhi2434
Thank you.