Microsoft .
Programs written for the .NET Framework execute in a software environment that manages the program’s runtime requirements. This runtime environment, which is also a part of the.NET Framework, is known as the Common Language Runtime (CLR). The CLR provides the appearance of an application virtual machine, so that programmers need not consider thecapabilities of the specific CPU that will execute the program. The CLR also provides other important services such as security mechanisms, memory management, and exceptionhandling. The class library and the CLR together compose the .NET Framework. The framework is intended to make it easier to develop computer applications and to reduce thevulnerability of applications and computers to security threats.
The Microsoft .NET Framework 4 provides the following new features and improvements:
* The .NET Framework 4 worksside by side with the Framework version 3.5 SP1. Applications that are based on earlier versions of the Framework will continue to run on that version. Just a subset offunctionality is shared by all versions of the Framework.
* Innovations in the Visual Basic and C# languages, for example statement lambdas, implicit line continuations, dynamicdispatch, and named/optional parameters.
* The ADO.NET Entity Framework, which simplifies how developers program against relational databases by raising the level of abstraction,has many new features. These includes persistence ignorance and POCO support, lazy loading, testdriven development support, functions in model, and new LINQ operators.
*Enhancements to ASP.NET:
o New javascript UI Templates and databinding capabilities for AJAX.
o New ASP.NET chart control.
* Improvements in WPF:
o Added support in WindowsPresentation Foundation (WPF) for Windows 7 multitouch, ribbon controls, and taskbar extensibility features.
o Added support in WPF for Surface 2.0 SDK.
o New lineofbusinesscontrols including charting control, smart edit, data grid, and others that improve the experience for developers who build data centric applications.
o Improvements inperformance and scalability.
o Visual improvements in text clarity, layout pixel snapping, localization, and interoperability.
* Improvements to Windows Workflow (WF) that letdevelopers to better host and interact with workflows. These include an improved activity programming model, an improved designer experience, a new flowchart modeling style, anexpanded activity palette, workflowrules integration, and new message correlation features. The .NET Framework also offers significant performance gains for WFbased workflows.
*Improvements to Windows Communication Foundation (WCF) such as support for WCF Workflow Services enabling workflow programs with messaging activities, correlation support, durabletwoway communication and rich hosting capabilities. Additionally, .NET Framework 4 provides new WCF features such as service discovery, router service, simplified configurationand a number of improvements to queuing, REST support, diagnostics, and performance.
* Innovative new parallel programming features such as parallel loop support, Task ParallelLibrary (TPL), Parallel LINQ (PLINQ), and coordination data structures which let developers harness the power of multicore processors.
Microsoft .NET Framework 4 Beta 2 x86
Size: 38 MB
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Microsoft .NET Framework 4 Beta 2 x64
Size : 55 MB
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