.Net Framework Features, from .Net 2.0 to 4.5

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This article discusses the features introduced in Microsoft .net framework 2.0, 3.0, 3.5, 4.0 and newly introduced 4.5 framework.

.Net Framework Features, from .Net 2.0 to 4.5

  • Introduction
  • .Net Framework 2.0 Features
    • ADO.NET 2.0
    • SQL Server data provider (SqlClient)
    • XML
    • .NET Remoting
    • ASP.NET 2.0
  • .Net Framework 3.0/3.5 Features
    • Windows Presentation Foundation (WPF)
    • Windows Communication Foundation (WCF)
    • Windows Workflow Foundation (WWF)
    • Windows Card Space (WCS)
    • Core New Features and Improvements
      • Auto Implemented
      • Implicit Typed local variable
      • Implicitly Typed Arrays
      • Anonymous Types
      • Extension Methods(3.5 new feature)
      • Object and Collection Initializers
      • Lambda Expressions
  • .Net Framework 4.0 Features
    •     Application Compatibility and Deployment
    •     Core New Features and Improvements
      • BigInteger and Complex Numbers
      • Tuples
      • Covariance and Contravariance
      • Dynamic Language Runtime
    •     Managed Extensibility Framework
    •     Parallel Computing
    •     Networking
    •     Web
    •     Client
    •     Data
    •     Windows Communication Foundation
    •     Windows Workflow Foundation
  • .Net Framework 4.5 Features
    •  .NET for Windows Store Apps
    • Portable Class Libraries
    • Core New Features and Improvements
    • Tools
    • Parallel Computing
    • Web
    • Windows Presentation Foundation (WPF)
    • Windows Communication Foundation (WCF)
    • Windows Workflow Foundation (WF)
  • Conclusion




This article discusses the features introduced in Microsoft .net framework 2.0, 3.0, 3.5, 4.0 and newly introduced 4.5 framework.

.Net Framework 2.0 Features




New features in ADO.NET include support for user-defined types (UDT), asynchronous database operations, XML data types, large value types, snapshot isolation, and new attributes that allow applications to support multiple active result sets (MARS) with SQL Server 2005



The Microsoft .NET Framework 2.0 includes significant enhancements to all areas of ASP.NET. For Web page development, new controls make it easier to add commonly used functionality to dynamic Web pages. New data controls make it possible to display and edit data on an ASP.NET Web page without writing code. An improved code-behind model makes developing ASP.NET pages easier and more robust. Caching features provide several new ways to cache pages, including the ability to build cache dependency on tables in a SQL Server database.

ASP.NET accommodates a wide variety of browsers and devices. By default, controls render output that is compatible with XHTML 1.1 standards. You can use device filtering to specify different property values on the same control for different browsers.

.NET Remoting

.NET Framework Remoting now supports IPv6 addresses and the exchange of generic types. The classes in the System.Runtime.Remoting.Channels.Tcp namespace support authentication and encryption using the Security Support Provider Interface (SSPI). Classes in the new System.Runtime.Remoting.Channels.Ipc namespace allow applications on the same computer to communicate quickly without using the network. Finally, you can now configure the connection cache time-out and the number of method retries, which can improve the performance of network load-balanced remote clusters.


The new System.Xml.XmlReaderSettings class allows to specify the type of verifications which must be done when using a subclass of XmlReader to read XML data.

It is now possible to partially validate a DOM tree loaded within an instance of XmlDocument.

It is now possible to modify a DOM tree stored in an XmlDocument instance through the XPathNavigator cursor API.

.Net Framework 3.0/3.5 Features


Windows Presentation Foundation (WPF)

Windows Presentation Foundation (WPF) is a next-generation presentation system for building Windows client applications. The core of WPF is a resolution-independent and vector-based rendering engine that is built to take advantage of modern graphics hardware.

 WPF extends the core with a comprehensive set of application-development features that include Extensible Application Markup Language (XAML), controls, data binding, layout, 2-D and 3-Dgraphics, animation, styles, templates, documents, media, text, and typography. WPF is included in the Microsoft .NET Framework, so you can build applications that incorporate other elements of the .NET Framework class library.
To support some of the more powerful WPF capabilities and to simplify the programming experience, WPF includes additional programming constructs that enhance properties and events: dependency properties and routed events.

Windows Communication Foundation (WCF)


Windows Communication Foundation (WCF) is Microsoft’s unified programming model for building service-oriented applications. WCF allows you to build all kinds of distributed applications including 'traditional' Web Services so that your services support SOAP and will therefore be compatible with older .NET (and other) technologies. WCF is not just about pure SOAP over the wire - you can work with an Info set, and create a binary representation of your SOAP message that can then be sent along with your choice of protocol. This is for those who are particularly concerned about performance and have traditionally turned to .NET remoting.


Windows Workflow Foundation (WWF)


Windows Workflow Foundation, a core component of .NET Framework 3.0, provides a programming model, run-time engine, and tools for building workflow applications

A workflow is created and maintained by the workflow run-time engine. There can be several workflow engines within an application domain, and each workflow engine can support multiple workflows running concurrently. The run-time enables idle workflows to be unloaded from memory, persisted to a store, and reloaded whenever input is received.

Workflows can be authored in code, XAML markup, or a combination of both, known as code-separation, which is similar to the ASP.NET mode

Windows CardSpace (WCS):

Windows CardSpace (InfoCard) is a Digital Identity to online services. Digital Identity means how user will electronically represent them. Like as a debit/credit card each card has digital identity and password. If any user go to use the site on internet then he enter their username and password, for identity, but this is not secure.  To reduce these types of problems WCS works.

WCS (originally called Info Card) helps people keep track of their digital identities as distinct information cards. If a Web site accepts WCS logins, users attempting to log in to that site will see a WCS selection. By choosing a card, users also choose a digital identity that will be used to access this site. CardSpace and the new supporting technologies will change how you authenticate into an application, whether it sits on the Web, your phone, or your desktop.


Core New Features and Improvements


Some core new features and improvements are implemented in .Net 3.0/3.5


1. Auto Implemented Property

2. Implicit Typed local variable

3. Implicitly Typed Arrays

4. Anonymous Types

5. Extension Methods (3.5 new feature)

6. Object and Collection Initializers

7. Lambda Expressions


.Net Framework 4.0 Features


Common Language Runtime (CLR)

Application Compatibility and Deployment

                   .NET Framework 4 is highly compatible with applications that are built with earlier .NET Framework versions but there are some changes that were made to improve security, standards compliance, correctness, reliability, and performance.     

Managed Extensibility Framework

          MEF is a new library in .NET Framework 4 that helps you build extensible and composable applications. 

Parallel Computing

          In involves writing multithreaded and asynchronous code that simplify the work of application developers.It enables the developers to write efficiently,fine-grained and scalable code.


  Networking improvements are as follows:

1. Security improvements for Windows authentication

2. Support for Network Address Translation

3. Secure Sockets Layer (SSL) support

4. Improved support for mail headers


 ASP.NET version 4 introduces new features in the following areas:

1. Core Services

2. Web Forms

3. Web Forms Control

4. Visual Web Developer

5. Multi-targeting


.Net Framework 4.5 Features

 .NET for Windows Store Apps

Windows Store apps are designed for specific form factors and leverage the power of the Windows operating system. A subset of the .NET Framework 4.5 is available for building Windows Store apps for Windows by using C# or Visual Basic.

Portable Class Libraries

The Portable Class Library project in Visual Studio 2012 enables you to write and build managed assemblies that work on multiple .NET Framework platforms. Using a Portable Class Library project, you choose the platforms (such as Windows Phone and .NET for Windows Store apps) to target.


ASP.NET 4.5 includes the following new features:

  • Support for new HTML5 form types.
  • Support for model binders in Web Forms. These let you bind data controls directly to data-access methods, and automatically convert user input to and from .NET Framework data types.
  • Support for unobtrusive JavaScript in client-side validation scripts.
  • Improved handling of client script through bundling and minification for improved page performance.
  • Integrated encoding routines from the AntiXSS library (previously an external library) to protect from cross-site scripting attacks.
  • Support for WebSockets protocol.


Windows Presentation Foundation (WPF) Features in 4.5

In the .NET Framework 4.5, Windows Presentation Foundation (WPF) contains changes and improvements in the following areas:

  • The new Ribbon control, which enables you to implement a ribbon user interface that hosts a Quick Access Toolbar, Application Menu, and tabs.
  • The new INotifyDataErrorInfo interface, which supports synchronous and asynchronous data validation.
  • New features for the VirtualizingPanel and Dispatcher classes.
  • Improved performance when displaying large sets of grouped data, and by accessing collections on non-UI threads.
  • Data binding to static properties, data binding to custom types that implement the ICustomTypeProvider interface, and retrieval of data binding information from a binding expression.
  • Repositioning of data as the values change (live shaping).
  • Ability to check whether the data context for an item container is disconnected.
  • Ability to set the amount of time that should elapse between property changes and data source updates.
  • Improved support for implementing weak event patterns. Also, events can now accept markup extensions.


Windows Communication Foundation (WCF) Features in 4.5

In the .NET Framework 4.5, the following features have been added to make it simpler to write and maintain Windows Communication Foundation (WCF) applications:

  • Simplification of generated configuration files.
  • Support for contract-first development.
  • Ability to configure ASP.NET compatibility mode more easily.
  • Changes in default transport property values to reduce the likelihood that you will have to set them.
  • Updates to the XmlDictionaryReaderQuotas class to reduce the likelihood that you will have to manually configure quotas for XML dictionary readers.
  • Validation of WCF configuration files by Visual Studio as part of the build process, so you can detect configuration errors before you run your application.
  • New asynchronous streaming support.
  • New HTTPS protocol mapping to make it easier to expose an endpoint over HTTPS with Internet Information Services (IIS).
  • Ability to generate metadata in a single WSDL document by appending ?singleWSDL to the service URL.
  • Websockets support to enable true bidirectional communication over ports 80 and 443 with performance characteristics similar to the TCP transport.
  • Support for configuring services in code.
  • XML Editor tooltips.


Windows Workflow Foundation (WF) Features in 4.5

Several new features have been added to Windows Workflow Foundation (WF) in the .NET Framework 4.5. These new features include:

  • State machine workflows, which were first introduced as part of the .NET Framework 4.0.1 (.NET Framework 4 Platform Update 1). This update included several new classes and activities that enabled developers to create state machine workflows. These classes and activities were updated for the .NET Framework 4.5 to include:
    • The ability to set breakpoints on states.
    • The ability to copy and paste transitions in the workflow designer.
    • Designer support for shared trigger transition creation.







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About the Author

Full Name: sujeet bhujbal
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Member Since: 1/9/2012 11:50:34 PM
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Thanks Sujeet http://sujitbhujbal.blogspot.com
Sujit Bhujbal is Senior Software Engineer having over 4+ years of Experience in Asp.net 3.5,WPF,WCF and has worked on various platforms. He worked during various phases of SDLC such as Requirements and Analysis, Design and Construction, development, maintenance, Testing, UAT. He is Microsoft Certified Technology Specialist (MCTS) in Asp.net 3.5 Web Applications. He worked at various levels and currently working as a Senior Software Engineer. His core areas of skill are Web application development using WPF,WCF , C#.Net, ASP.Net 3.5, WCF, SQL Server 2008, CSS, Java script Web design using HTML, AJAX and Crystal Reports Working experience at various levels of SDLC starting from Feasibility, use/test case generation till maintenance, and help document preparation of software products. He is proficient in developing applications using SilverLight irrespective of the language, with sound knowledge of Microsoft Expression Blend and exposure to other Microsoft Expression studio tools. He has good experience in deploying applications using .net based deployment architecture with exposure to other deployment packages like Installshield.

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