Core New Features and Improvements
- Highly supported to Metro Style Apps. Create stunning new GUIs.
- The new Ribbon control, which enables you to implement a ribbon user interface that hosts a Quick Access Toolbar, Application Menu, and tabs.
- Ability to reduce system restarts by detecting and closing .NET Framework 4 applications during deployment.
- Support for arrays that are larger than 2 gigabytes (GB) on 64-bit platforms. This feature can be enabled in the application configuration file.
- 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 enabled.
- Background just-in-time (JIT) compilation, which is optionally available on multi-core processors to improve application performance.
- Ability to limit how long the regular expression engine will attempt to resolve a regular expression before it times out.
- Ability to define the default culture for an application domain.
- Console support for Unicode (UTF-16) encoding.
- Support for versioning of cultural string ordering and comparison data.
- Better performance when retrieving resources.
- Zip compression improvements to reduce the size of a compressed file.
- Ability to customize a reflection context to override default reflection behavior through the CustomReflectionContext class.
- upport for the 2008 version of the Internationalized Domain Names in Applications (IDNA) standard when the System.Globalization.IdnMapping class is used on Windows 8 Release.
- Delegation of string comparison to the operating system, which implements Unicode 6.0, when the .NET Framework is used on Windows 8 Release Preview. When running on other platforms, the .NET Framework includes its own string comparison data, which implements Unicode 5.x.
- Support for generic types.
- Convention-based programming model that enables you to create parts based on naming conventions rather than attributes.
- Multiple scopes.
- Resource File Generator (Resgen.exe) enables you to create a .resw file for use in Windows Metro style apps from a .resources file embedded in a .NET Framework assembly.
- 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.
- 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
- Support for WebSockets protocol.
- Support for reading and writing HTTP requests and responses asynchronously.
- Support for asynchronous modules and handlers.
- Support for content distribution network (CDN) fallback in the ScriptManager control.