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.NET Framework 3.5 Overview

What is .NET Framework 3.5?

The .NET Framework 3.5 is a major release that builds on the foundation of .NET Framework 2.0 and 3.0, adding new features, language enhancements, and a richer set of libraries. It enables developers to create robust, secure, and high‑performance applications for Windows desktop, web, and services.

Key Highlights

  • LINQ (Language Integrated Query) for data manipulation
  • ASP.NET AJAX for richer web experiences
  • Improved Windows Communication Foundation (WCF)
  • Enhanced Windows Presentation Foundation (WPF)
  • Entity Framework (EF) 1.0 for ORM capabilities
  • Support for Visual Studio 2008

Supported Platforms

  • Windows XP (SP2) and later
  • Windows Server 2003 (SP1) and later
  • Windows Vista and later
  • Windows 7 and later

Getting Started

To start building applications with .NET Framework 3.5, install Visual Studio 2008 (or newer) and ensure the .NET Framework 3.5 runtime is installed on your development machine.

Installation Guide

Resources