1. The choice of real engineers…
Prepared & Presented by :-
Prageeth Sandakalum, Microsoft Student Champ

2. Microsoft .NET Framework
 What is a “framework”
 An overview of the .NET Virtual Machine
 Inside the .NET framework
 .NET framework language support
 .NET framework class library
 C# Language Vs Java
 Completely new features in C#
 Before you begin
 Writing the first C# code
 Visual Studio Fun…

3. C# .NET Language
 Access modifiers, Conditions, Loops
 Object Oriented Programming in C#
 Classes and Objects
 Inheritance
 Polymorphism
 Encapsulation
 Value Types Vs Reference Type
 C# special language features
 Enumerations, Nullable Types, Partial Classes, Operator
Overloading
 Windows Forms

4. .NET ??
We have many. Why another 1?
.NET Framework (3.5)
All in 1 solution for a programmer…

5. A framework a set of ideas, principles, agreements, or rules that
provides the basis or outline for something intended to be more
fully developed at a later stage
- MSN Encarta -
A software framework is a re-usable design for a software
system (or subsystem).
A software framework may include support programs, code
libraries, a scripting language, or other software to help develop
and glue together the different components of a software
project.
- Wikipedia -

6.  Language neutral.
 many languages with a common class library
 Provides a runtime and a set of common libraries for writing
and executing written programs in any compliant language.
 The runtime is called the .NET CLR (Common Language
Runtime) – similar to the Java Runtime.
 CLR Provides the functionality to
 Activate objects, perform security Checks, Memory Allocation,
Execution, etc…

7. VB C++ C# J# … Secure, integrated class
libraries
Common Language Specification
 Unifies programming
models across languages
Visual Studio .NET
ASP .NET
Windows
Web Forms Web Services Enables cross-language
Forms 
Mobile Internet Toolkit
integration
ADO .NET and XML  Factored for extensibility
Base Class Library  Designed for tools
 Create frameworks on top
Common Language Runtime of the high level .NET
framework
Operating System
ASP.NET Common Language Runtime
 High-productivity environment  Executes code, maintains
for building and running security, handles component
Web services “plumbing” and dependencies

8.  Common Language Specification.
First class support for all CLS compliant languages.
 Microsoft provided languages.
Visual Basic®, C#, C++, J#, JScript®.
 3rd-party provided languages
 APL, Cobol, Component Pascal, Eiffel, Fortran, Haskell, Mercury,
Oberon, Oz, Perl, Python, RPG, Scheme, Smalltalk, Standard ML,
Ruby, Delphi and the list is growing!

9. Spans All Programming Languages.
Enables cross-language inheritance and debugging.
Integrates well with tools.
Is Object-Oriented and Consistent.
 Enhances developer productivity by reducing the number of APIs
to learn.
Has a Built-In Common Type System.
Is Extensible.
Makes it easy to add or modify framework features.
Is Secure.
Allows creation of secure applications.

10. As in Java
Object-Orientation with single inheritance
Interfaces
Exceptions
Threads
Packaging
Garbage Collection
Reflection
Dynamic loading of code
…

11.  References and output parameters
 Objects on the stack (structs)
 Attributes
 Indexers
 Partial Types
 Loosely Typed Variables
 Enumerations
 Operator Overloading
 Nullable types
 Lambda Expressions
 …

12.  Dynamic Link Libraries
 Adding references
 Adding Projects
 Structuring the Code
 Using the .DLLs
 Namespaces
 Adding files to the projects
 Aliases
 Adding arguments
 Console.Read()

13. Let’s start Coding
and take a tour in
Visual Studio..!

14. C#.NET Language Features
The Finest roadmap in application development

15.  Access Modifiers
 Private, Public, protected
 Internal, internal protected
 Variable declaration
 Static, Constant, Var
 IF – ELSE – ELSE IF
 Switch-Case
 Arrays
 Loops
 For, While, Do-While, Foreach

16. Write a small program to take 3 numbers using command line
arguments and insert into the array. Then add these
numbers. If the total is larger than 100 print a message…

17.  Declaring classes
 Creating Object
 Inheritance
 Sealed Classes, Interfaces
 Polymorphism
 Overriding, Overloading
 Encapsulation
 Properties
 Special Keywords
 params, ref

18. Write a program to create an Animal super class and create a
Cat, Dog classes which extends it… Use properties to
initialize the number of legs each animal has.
Write a program to test the ref variable and the params
keyword

20. Structs
 Value type representation of classes
 Ideal for Light weight objects or heavily used objects
 Polygon, Rectangle classes
 Fraction class in a mathematical project
Enumerations
Nullable Types
Partial Classes
Operator Overloading

21. Create a struct for complex numbers.. Use operator
overloading to implement the multiplication

22. Let’s create a simple Windows
Based Client Application in
C#.NET using Visual Studio..!

23. Thank You !!!
Contact me for further clarification
Prageeth Sandakalum
Prageeth.itfac@live.com