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Difference between Microsoft Net Framework 3.5 and Net Framework 4.0

Net Framework 3.5 and Net Framework 4.0 are two different programming frameworks from Microsoft. They have different capabilities and uses, so it’s important to understand the difference before deciding which to use. This article will outline the main differences between the two frameworks.
NET Framework (NetFx) is an integral part of many Windows-based applications that enable developers to create Windows Forms, Windows Presentation Foundation (WPF), ASP.NET, ADO.NET data structures, and more recent WinRT APIs in their respective languages.

What is Microsoft Net Framework 3.5?

Microsoft Net Framework 3.5 is a Microsoft programming software development kit (SDK) that enables developers to create applications and services Microsoft Net Framework 3.5 runs on Microsoft Windows operating systems Microsoft Net Framework 3.5 includes Microsoft Common Language Runtime (CLR), which provides a managed code execution environment Microsoft Net Framework 3.5 also includes a set of class libraries, which give Microsoft NET Framework-based applications their functionality Microsoft NET Framework 3.5 enables developers to create Web solutions and services based on ASP NET AJAX Microsoft NET Framework 3.5 also enables developers to take advantage of LINQ and the new language features in Visual C# and Visual BasicNET Microsoft is continuously improving Microsoft NET Framework 3.5 and plans to release new versions on a regular basis Microsoft will also continue to make the Microsoft NET Framework 3.5 available for download from its website. Microsoft encourages all developers to target Netflix API v2.0, which builds on Microsoft NET Framework 4.6 or higher, for theirs. NET-based projects. New features will only be added to Netflix API v2.0 and future versions; no new features will be added to Microsoft NET Framework 3.5Going forward, we recommend that you target Microsoft.

What is Microsoft Net Framework 4.0?

Microsoft’s .NET Framework is a software development platform that provides programmers with the tools they need to create applications for the Microsoft Windows platform. The latest version of the .NET Framework is version 4.0, which was released in 2010. Version 4.0 includes a number of new features and improvements, such as support for the new Windows Presentation Foundation (WPF) graphics system and improved performance when working with large amounts of data.

The .NET Framework 4.0 is backward-compatible with previous versions of the framework, so existing applications will continue to run on this new version without any changes required. Microsoft also provides an extension to the .NET Framework, called the Microsoft NET Framework 4 Client Profile, which is designed for use on PCs that have limited memory and storage capacity. Overall, Microsoft .NET Framework 4.0 provides a robust and feature-rich platform for developing Windows applications.

Difference between Microsoft Net Framework 3.5 and Net Framework 4.0

  • Microsoft .NET Framework is a software development framework from Microsoft. It provides a controlled programming environment where software components are executed. The .NET Framework version 3.5 is included with Windows 7, while version 4.0 is included with Windows 7 Service Pack 1 and Windows Server 2008 R2 Service Pack 1.
  • The Microsoft .NET Framework 3.5 SP1 is a cumulative update that contains many new features building incrementally on top of .NET Framework 2.0 and 3.0 and includes cumulative servicing updates to the .NET Framework 2.0 and the .NET Framework 3.0 subcomponents. The Microsoft .NET Framework 4 extends the Microsoft .NET Framework 3.5 SP1 functionality by adding new features and fixing existing bugs.
  • New features in Microsoft .NET Framework 4 include parallel Extensions, Code Contracts, Managed Extensibility Framework, Azure support, ASP.NET MVC 3 support, and dynamic Data Support. Additionally, Microsoft .NET Framework 4 provides compulsory security enforcement for trust levels and code access security policy levels that were first introduced in Microsoft NET Framework 2.0 but have not been fully enforced until now.


Microsoft has made it a priority to update its software regularly with new features and improvements. The most recent version of the .NET Framework is 4.0, which was released in 2010. However, many businesses are still using older versions of the framework, such as 3.5 or even 2.0. If you’re not sure which version of the NET Framework your business is using, we can help you determine that and provide information on how to upgrade to the latest version.

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