版本

发行的功能及其特点           

First Version of CLR and Base Class Library（CLR的第一个版本及其基础类库）

1. First Major version of .NET Framework（.net框架的第一个主版本）
2. Built-in support for mobile ASP.NET controls. Previously available as an add-on for .NET Framework, now part of the framework（增加内建支持asp.net的mobile控件）

3. Security changes – enable Windows Forms assemblies to execute in a semi-trusted manner from the Internet, and enable Code Access Security in ASP.NET applications
（启用asp.net代码访问安全）
4. Built-in support for ODBC and Oracle databases. Previously available as an add-on for .NET Framework 1.0, now part of the framework

（增加内建支持ODBC和Oracle的数据库）

5. .NET Compact Framework – a version of the .NET Framework for small devices
6. Internet Protocol version 6 (IPv6) support

1. Generics （泛型）
2. Language support for generics built directly into the .NET CLR
3. Full 64-bit support for both the x64 and the IA-64 hardware platforms （64位支持）
4. SQL Server integration – .NET 2.0, VS 2005, and SQL Server 2005 are all tied together. This means that instead of using T-SQL, one can build stored procedures and triggers in any of the .NET-compatible languages
5. A new hosting API for native applications wishing to host an instance of the .NET runtime. The new API gives a fine grain control on the behavior of the runtime with regards to multithreading, memory allocation, assembly loading and more
6. Many additional and improved ASP.NET web controls
7. New data controls with declarative data binding
8. New personalization features for ASP.NET, such as support for themes, skins, master pages and webparts
9. .NET Micro Framework – a version of the .NET Framework related to the Smart Personal Objects Technology initiative
10. Membership provider（成员提供）
11. Partial classes（部分类）
12. Nullable types（可空类型）
13. Anonymous methods（匿名方法）
14. Iterators（迭代器）
15. Data tables

1. Windows Presentation Foundation (WPF), a new user interface subsystem and API based on XML and vector graphics, which uses 3D computer graphics hardware and Direct3D technologies
2. Windows Communication Foundation (WCF), a service-oriented messaging system which allows programs to interoperate locally or remotely similar to web services
3. Windows Workflow Foundation (WF) allows for building of task automation and integrated transactions using workflows
4. Windows CardSpace, a software component which securely stores a person’s digital identities and provides a unified interface for choosing the identity for a particular transaction, such as logging in to a website

1. Added new features such as AJAX-enabled Web sites and LINQ
2. The SP1 update added
2.1. .NET Framework Client Profile
2.2. Dynamic Data
2.3. Two new data service components added, ADO.NET Entity Framework and ADO.NET Data Services
2.4. Two new assemblies for web development, System.Web.Abstraction and System.Web.Routing
2.5. New set of controls “Visual Basic Power Packs” introduced

1. New Version of CLR
2. Parallel Extensions to improve support for parallel computing, which target multi-core or distributed systems. To this end, technologies like PLINQ (Parallel LINQ), a parallel implementation of the LINQ engine, and Task Parallel Library, which exposes parallel constructs via method calls are included
3. New Visual Basic .NET and C# language features, such as implicit line continuations, dynamic dispatch, named parameters, and optional parameters
4. Code Contracts
5. Inclusion of new types to work with arbitrary-precision arithmetic (System.Numerics.BigInteger) and complex numbers (System.Numerics.Complex)
6. Dynamic Language Runtime (DLR)
7. Managed Extensibility Framework (MEF)
8. Windows Server AppFabric for application server capabilities in the form of AppFabric hosting and in-memory distributed caching support

1..NET for Metro style Apps
2.Portable Class Libraries
3.Better performance through background garbage collection for servers. When you use server garbage collection in the .NET Framework 4.5 RC, background garbage collection is automatically enable
4.Background just-in-time (JIT) compilation,
5.Asynchronous methods
6.Caller info attributes
7.Web Socket
8.ASP.NET:Support for new HTML5 form types
....