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Introduction to .NET with C# @ university of wayamba

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Prageeth Sandakalum
Prageeth Sandakalum

The document discusses the .NET framework and C# programming language. It provides an overview of the .NET framework, including the common language runtime (CLR) and class library. It also discusses C# language features such as access modifiers, object-oriented programming, value types vs reference types, and special features like enums, nullable types, and partial classes. The document uses examples to demonstrate how to write C# code using features like classes, inheritance, operator overloading, and creating a Windows form application in Visual Studio.

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The choice of real engineers… Prepared & Presented by :- Prageeth Sandakalum, Microsoft Student Champ
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…
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
.NET ?? We have many. Why another 1? .NET Framework (3.5) All in 1 solution for a programmer…
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 -
 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…
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
 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!
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.
As in Java Object-Orientation with single inheritance Interfaces Exceptions Threads Packaging Garbage Collection Reflection Dynamic loading of code …
 References and output parameters  Objects on the stack (structs)  Attributes  Indexers  Partial Types  Loosely Typed Variables  Enumerations  Operator Overloading  Nullable types  Lambda Expressions  …
 Dynamic Link Libraries  Adding references  Adding Projects  Structuring the Code  Using the .DLLs  Namespaces  Adding files to the projects  Aliases  Adding arguments  Console.Read()
Let’s start Coding and take a tour in Visual Studio..!
C#.NET Language Features The Finest roadmap in application development
 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
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…
 Declaring classes  Creating Object  Inheritance  Sealed Classes, Interfaces  Polymorphism  Overriding, Overloading  Encapsulation  Properties  Special Keywords  params, ref
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
Introduction to .NET with C# @ university of wayamba
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
Create a struct for complex numbers.. Use operator overloading to implement the multiplication
Let’s create a simple Windows Based Client Application in C#.NET using Visual Studio..!
Thank You !!! Contact me for further clarification Prageeth Sandakalum Prageeth.itfac@live.com

More Related Content

Introduction to .NET with C# @ university of wayamba

  • 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