Voved Vo Aspnet

7/30/2019 Voved Vo Aspnet

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.NET

2012

-


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Today

What is .NET? What Problems Does .NET Solve?

What are .NET Framework Components?


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What is .NET?

A set of technologies for developing and usingcomponents to create:

Web Forms

Web Services

Windows Applications

.NET Framework 4 Developer Center

http://msdn.microsoft.com/en-us/netframework/
http://msdn.microsoft.com/en-us/netframework/http://msdn.microsoft.com/en-us/netframework/http://msdn.microsoft.com/en-us/netframework/http://msdn.microsoft.com/en-us/netframework/


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.NET Framework

Provides support for many languages VB, C#, J#, C++, PERL, Python, Eiffel, Cobol, ..

Conform to Common Language Infrastructure specifications

.NET is included with Windows

Mono is an open-source implementation of .NET for

Linux, Solaris, Mac OS X, Windows, and Unix


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Before .NET

Operating System (Windows, Linux, Unix, ...)

Unmanaged

Applications


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Unmanaged

Applications Managed Applications

Class Library

Common Language Runtime

With .NET


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.NET Web Applications


Unmanaged

Applications Managed Applications

Class Library

Common Language RuntimeWeb Server (IIS)

ASP.NET

Web Forms Web Services

Web Applications


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Goals of .NET

Uniform model for Desktop and Web programming

So far

Desktop programming

object-oriented

compiled (C++)extensive class libraries

Web programming

ASP (not object-oriented)

interpreted (VBScript, JavaScript, PHP, ...)specialized libraries

Under .NET

Desktop and Web programming

object-oriented (ASP.NET)

compiled (C#, VB.NET)

uniform class library


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Goals of .NET

Interoperability between programming languagesSo far- millions of lines of code in C++, Fortran, Visual Basic, ...

- very limited interoperability

Under .NET- binary compatibility between more than 20 languages (C#, C++, VB.NET, Java,

Eiffel, Fortran, Cobol, ML, Haskell, Pascal, Oberon, Perl, Python, ...)

Public Class A

Public x As IntegerPublic Sub Foo() ...

End Class

class B : A {

public string s;public void Bar() {...}

}

class Client feature

obj: B;...

create obj;

obj.Bar;

...

end

class in VB.NET subclass in C# used in Eiffel


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.NET Core features

Comprehensive interoperability with existing code: (COM binaries, PInvoke calls C-based libraries)

Complete and total language integration:

.NET supports cross-language inheritance, cross-language exception handling, andcross-language debugging of code.

A common runtime engine shared by all .NET-aware languages:

One aspect of this engine is a well-defined set of types that each .NET-awarelanguage understands.

A comprehensive base class library:

This library provides shelter from the complexities of raw API calls and offers aconsistent object model used by all .NET-aware languages.

No more COM plumbing:

IClassFactory, IUnknown, IDispatch, IDL code, and the evil variant compliant datatypes (BSTR, SAFEARRAY, and so forth) have no place in a .NET binary.

A truly simplified deployment model:

Under .NET, there is no need to register a binary unit into the system registry.Furthermore, .NET allows multiple versions of the same *.dll to exist in harmony on asingle machine.


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.Net Framework 3.5 Architecture

.NET Framework 2.0 + SP2

WPF WCF WF WindowsCardSpace

.NET Framework 3.0 + SP2

.NET Framework 3.5

LINQ WF & WCFEnhancements

Add-inFramework

AdditionalEnhancements

ADO.NET EntityFramework

ADO.NET DataServices

ASP.NETDynamic Data

WPF & WCFEnhancements


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The .NET Framework

Common Language Specification

Common Language Runtime

VB C++ C#

ASP.NET: Web Servicesand Web Forms

J#

WindowsForms

.NET Framework Base Classes

ADO.NET: Data and XML

Visua

lStudio.NE

T

Perl Cobol

Windows (Win32, IIS, COM+, )


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Interoperability

C# C++ VB ...

compiler

MSIL code

(+ metadata)

compiler compiler compiler

machine code

loader

verifier

JIT compiler

if (a > b) max = a; else max = b;

IL_0004: ldloc.0

IL_0005: ldloc.1

IL_0006: ble.s IL_000c

IL_0008: ldloc.0IL_0009: stloc.2

IL_000a: br.s IL_000e

IL_000c: ldloc.1

IL_000d: stloc.2

mov ebx,[-4]mov edx,[-8]

cmp ebx,edx

jle 17

mov ebx,[-4]

mov [-12],ebx

...

C#

CIL

Intel code


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Whats CIL Look Like?.method static void main(){

.entrypoint.maxstack 4

.locals init (int32 first,int32 second,int32 result)

ldstr "First number: "call void [mscorlib]System.Console::Write(string)call string [mscorlib]System.Console::ReadLine()call int32 [mscorlib]System.Int32::Parse(string)stloc first

ldstr "Second number: "call void [mscorlib]System.Console::Write(string)call string [mscorlib]System.Console::ReadLine()call int32 [mscorlib]System.Int32::Parse(string)stloc second

ldloc firstldloc secondaddstloc result

ldstr "{0} + {1} = {2}"

ldloc firstbox int32

ldloc secondbox int32

ldloc resultbox int32

call void [mscorlib]System.Console::WriteLine(string, object, object, object)

ret}


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Andin C#?static class Program

{static void Main(string[] args)

{

Int32 first;

Int32 second;

Int32 result;

System.Console.Write("First number: ");

first = System.Int32.Parse(System.Console.ReadLine());

System.Console.Write("Second number: ");

second = System.Int32.Parse(System.Console.ReadLine());

result = first + second;

System.Console.WriteLine("{0} + {1} = {2}", first, second, result);

}

}


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CLR (Common Language Runtime):

JAVA


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System.Data

Design

OLEDB

SQLTypes

SQL

System

Globalization

Diagnostics

Configuration

Collections

Resources

Reflection

Net

IO

Threading

Text

ServiceProcess

Security RuntimeInteropServices

Remoting

Serialization

System.Xml

XPath

XSLT Serialization

System.Web

Configuration SessionState

Caching Security

ServicesDescription

Discovery

Protocols

UIHtmlControls

WebControls

System.Drawing

Imaging

Drawing2D

Text

Printing

.NET Framework Classes

System.Windows.Forms

Form Button

MessageBox ListControl


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Mono Project

www.mono-project.com

Open source implementation of .NET (according to ECMA standards)

Platform support: Linux, Solaris, MacOS X, Windows

Contains:

Compilers for C# (some features of C# 2.0), MonoBasic (extension of Visual Basic.NET)

Common Language Runtime with JIT compiler BCL implementation

ADO.NET

Implementation of ASP.NET, Web Services for Apache web server

GUI library GTK# (based on GTK)

Windows Forms

Integrated development environment

Help browser


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Visual Studio

+ Service Pack 1 + SP1 Update for Vista

+ WF Extensions + WPF & WCF Extensions

+ SharePoint Workflow

+ Visual Studio Tools for Office Second Edition

+ ASP.NET AJAX Extensions

+ Device Emulator v2.0 + .NETCF v2.0 SP2+ WM 5.0 Pocket PC SDK + WM5.0 Smartphone SDK


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Multitargeting in Visual Studio 2008


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