.NET Framework
.NET Training Program
Ashutosh Pandey
Student Incharge - Software Incubator
Computer Science and Engineering
Ajay Kumar Garg Engineering College, Ghaziabad
Email: meatashu@gmail.com, Phone: 9990687407
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Software Incubator .NET Training Program
Wednesday, March 23, 2016
Overview
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What is .NET? - Technology
.NET Framework - collection
Visual Studio - IDE
C# and VB – common languages
2 tier architecture
3 tier architecture
N tier architecture
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Why .Net?
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Why C……..brainstorming
Why Java …..Brainstorming
Now why .net ???
Fast application development
No new concept
Fastest emerging technology in IT Market
Job Oriented
Has a wide range of applications
Object Oriented(close to real world)
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What is Microsoft .NET?
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.NET is a Framework that provides a common
platform for many languages.
44 languages in the beginning…..so can u
guess what is the no now ???
The .NET Framework is an environment for
building, deploying, and running Web
applications and Web Services
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Advantages of .NET
 Direct Support for Security
Consistent Programming Model
Windows Presentation Format Support with XAML
Intelli-sense
Debugging
Greatly simplifies language interoperability.
Supports strongly typed languages
Calling from and to any other .NET language becomes simple
It uses industry-standard protocols such as TCP/IP, XML, SOAP and HTTP
Easy Application Deployment and Maintenance
Simplified Development Efforts
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.NET Framework
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.NET Framework
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.NET Framework consists of 3 main parts:
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Common Language Runtime
MSIL
Framework Classes/Libraries
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The .NET Framework
VB
C++
C#
JScript
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Common Language Specification
ADO.NET: Data and XML
Base Class Library
Visual Studio.NET
Windows
Windows
Forms
Forms
ASP.NET: Web Services
and Web Forms
Common Language Runtime
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Common Language Runtime (CLR)
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A common runtime for all .NET languages
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Common type system
Common metadata
Intermediate Language (IL) to native code compilers
Memory allocation and garbage collection
Code execution and security
Over 44 languages supported today
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C#, VB, Jscript, Visual C++ from Microsoft
Perl, Python, Smalltalk, Cobol, Haskell, Mercury, Eiffel, Oberon,
Oz, Pascal, APL, CAML, Scheme, etc.
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Common Language Runtime (CLR)
CLR
works like a virtual machine in executing
all languages.
All .NET languages must obey the rules and
standards imposed by CLR. Examples:
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Object declaration, creation and use
Data types,language libraries
Error and exception handling
Interactive Development Environment (IDE)
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Intermediate Language (IL)
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.NET languages are not compiled to machine code.
They are compiled to an Intermediate Language (IL).
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CLR accepts the IL code and recompiles it to machine
code. The recompilation is just-in-time (JIT) meaning it
is done as soon as a function or subroutine is called.
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The JIT code stays in memory for subsequent calls. In
cases where there is not enough memory it is discarded
thus making JIT process interpretive.
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Compilation in .NET
Code in VB.NET
Code in C#
Code in another
.NET Language
VB.NET compiler
C# compiler
Appropriate
Compiler
IL(Intermediate
Language) code
CLR just-in-time
execution
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Common Language Runtime
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Multiple Language Support
CTS is a rich type system built into the CLR
 Implements various types (int, double, etc)
 And operations on those types
CLS is a set of specifications that language and library designers need to
follow
 This will ensure interoperability between languages
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Common Language Runtime (CLR)
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Enables cross-language interoperability
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Language/Hardware/OS Independent
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Common Language Specification describes interoperability
requirements
Compact framework for small devices
Industrial strength Garbage collector
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Designed for multi-processor servers
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CLR: Execution Model
Source
code
Managed
code
VB
C#
C++
Compiler
Compiler
Compiler
Assembly
IL Code
Assembly
IL Code
Assembly
IL Code
Unmanaged
Component
Common Language Runtime
JIT Compiler
Native Code
Operating System Services
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.NET Framework Libraries
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Single consistent set of object oriented class
libraries to enable building distributed web
applications (Unified Classes)
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Built using classes arranged across logical
hierarchical namespaces
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For example: System.Data.SQL
Work with all CLR languages
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No more “VBRun” or “MFC” divide
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.NET Framework Libraries
Unified Classes
Web Classes (ASP.NET)
Controls, Caching, Security, Session, Configuration etc
Data (ADO.NET)
Windows Forms
ADO, SQL,Types etc
Design, Cmpnt Model etc
XML Classes
Drawing Classes
XSLT, Path, Serialization etc Drawing, Imaging, Text, etc
System Classes
Collections, Diagnostics, Globalization, IO, Security,
Threading Serialization, Reflection, Messaging etc
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ASP.NET
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ASP.NET is a new programming framework designed to
make web apps easier to:
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Build, Deploy, Run
Radical advancement of today’s ASP
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Broader programming language support
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Easier page programming model
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Visual Basic.NET, Jscript.NET, C#
Namespaces
Richer XML features and integration
XCopy/FTP deployment
Better reliability and recovery
Excellent Visual Studio designer support
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ASP.NET
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ASP.NET is compiled, not interpreted
 Better performance
 Early binding, strong typing, JIT compiling to native code
Configuration settings in XML-based files
Session state can now be shared across a web farm of ASP.NET
servers
 .NET State Server Process manages state
Application state is still single sever
ASP.NET detects and recovers from problems
 Access violations, memory leaks, deadlocks
ASP.NET supports pre-emptive cycling of apps
 Time and request based settings
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ASP.NET
ASP.NET,the
platform services that allow to program Web
Applications and Web Services in any .NET language
ASP.NET
Uses .NET languages to generate HTML pages.
HTML page is targeted to the capabilities of the requesting
Browser
ASP.NET
“Program” is compiled into a .NET class and
cached the first time it is called. All subsequent calls use the
cached version.
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ASP.NET
 Logical Evolution of ASP
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Supports multiple languages
Improved performance
Control-based, event-driven execution model
More productive
Cleanly encapsulated functionality
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ASP.NET Web Services
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A technical definition
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“A programmable application component accessible
via standard Web protocols”
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Web Services
 It is just an application…
 …that exposes its features and capabilities over
the network…
 …using XML…
 …to allow for the creation of powerful new
applications that are more than the sum of their
parts…
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ASP.NET Server Controls
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Server controls are tags that are understood by
the server.
There are three kinds of server controls:
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HTML Server Controls - Traditional HTML tags
Web Server Controls - New ASP.NET tags
Validation Server Controls - For input validation
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ASP.NET Web Forms
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Allows clean cut code
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Code-behind Web Forms
Easier for tools to generate
Code within is compiled then executed
Improved handling of state information
Support for ASP.NET server controls
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Data validation
Data bound grids
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ADO.NET (Data and XML)
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New objects (e.g., DataSets)
Separates connected / disconnected issues
Language neutral data access
Uses same types as CLR
Great support for XML
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Visual Studio.NET
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Visual Studio.NET
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Development tool that contains a rich set of
productivity and debugging features
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Visual Studio.NET
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Integrated Development Environment
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Visual Basic.NET
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Visual C++
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Integration with .NET Framework with managed extensions (classes)
C#
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Many language enhancements
Inheritance,Overloading, Free Threading
New development language
Based on C/C++ with Garbage Collection/Memory Management
JUMP (Java User Migration Path) to .NET (1/25/01)
Visual J++ has been removed from the Visual Studio suite currently but it was a part of the earlier versions.
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VS.NET Features
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Single IDE for all Languages
Server Explorer
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Event Viewer, Message Queues, Services
SQL Databases, Data Connection, Etc.
Integrated IE Browser
HTML/XML Editors
Macros/Macro Explorer
Solution Explorer
Tabbed Documents
Dynamic Help
Common Forms Editor
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VB.NET, C++, and C#
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C#
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Intro to C#
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Design Goals of C#
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Features
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Component Orientated Language
Robust and Durable Software
Classes
Namespaces
No header files
VB.NET vs. C#
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Ability to embed C++ code in C# code
Elegance of C/C++ language
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Design Goals C#
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Component Oriented
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Robust and Durable
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Properties, methods, events
Garbage collection (No memory leaks and stray
pointers)
Exception Handling
Type-safety (No uninitialized variables)
Based on C++
Interoperability
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Support for XML, SOAP
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IIS – Internet Information Services
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Internet Information Service
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IIS (Internet Information Services) is
Microsoft's Internet server
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IIS comes as a free component with
Windows servers
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IIS is also a part of Windows 2000 and
XP Professional
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How to install
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How does ASP.NET work?
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Requests an HTML file, the server returns
the file
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Requests an ASP.NET file, IIS passes the
request to the ASP.NET engine on the server
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The ASP.NET engine reads the file, line by
line, and executes the scripts in the file
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ASP.NET file is returned to the browser as
plain HTML
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J2EE and .NET
Execution Engine
 J2EE
Java source code compiles into machineindependent byte code
Runtime Environment : JVM
 .NET
Any compliant language compiles into MSIL
Runtime environment : CLR
Both JVM and CLR ,support services, such as code
verification, memory management via garbage
collection, and code security
J2EE and .NET
Cross Platform Portability
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J2EE
Platform Independent
JDK should exist on target machine
.NET
Supports Windows platform
CLR should exist on target machine
Can support other platforms provided it has its own
JIT complier
J2EE and .NET
Language Support
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J2EE
Tied to Java
Supports other languages via interface technology
.NET
Language independent
Supports any language if mapping exists from that
language to IL
J2EE and .NET
Tools Support
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J2EE
Can employ any number of tools
Pro :Developer has a great deal of choice
Con :Difficulty in choosing a right tool for a given job
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.NET
Visual Studio.NET, single IDE for building an
application
Questions/Queries ??
Visit us @ www.akgec.org/si
Course material available at
www.akgec.org/si/downloads
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