История изменений программы Microsoft .NET Framework

Изменения в программе Microsoft .NET Framework 4.5.2 Final (07.05.2014):

• New HostingEnvironment.QueueBackgroundWorkItem method that lets you schedule small background work items. ASP.NET tracks these items and prevents IIS from abruptly terminating the worker process until all background work items have completed. These will enable ASP.NET applications to reliably schedule Async work items.
• New HttpResponse.AddOnSendingHeaders and HttpResponseBase.AddOnSendingHeaders methods are more reliable and efficient than HttpApplication.PreSendRequestContent and HttpApplication.PreSendRequestHeaders. These APIs let you inspect and modify response headers and status codes as the HTTP response is being flushed to the client application. These reliability improvements minimize deadlocks and crashes between IIS and ASP.NET.
• New HttpResponse.HeadersWritten and HttpResponseBase.HeadersWritten properties that return Boolean values to indicate whether the response headers have been written. You can use these properties to make sure that calls to APIs such as HttpResponse.StatusCode succeeds. This enables shared hosting scenarios for ASP.NET applications.
• High DPI Improvements is an opt-in feature to enable resizing according to the system DPI settings for several glyphs or icons for the following Windows Forms controls: DataGridView, ComboBox,
• ToolStripComboBox, ToolStripMenuItem and Cursor. Here are examples of before and after views once this change is opted into.

• The red error glyph scales correctly.
• The drop down arrow in the ToolStripMenu scales correctly
• Distributed transactions enhancement enables promotion of local transactions to Microsoft Distributed Transaction
• Coordinator (MSDTC) transactions without the use of another application domain or unmanaged code. This has a significant positive impact on the performance of distributed transactions.
• More robust profiling with new profiling APIs that require dependent assemblies that are injected by the profiler to be loadable immediately, instead of being loaded after the app is fully initialized. This change does not affect users of the existing ICorProfiler APIs. Before this feature, diagnostics tools that do IL instrumentation via profiling API could cause unhandled exceptions to be thrown, unexpectedly terminating the process.

• The .NET Framework 4.5.2 enables out-of-process, Event Tracing for Windows (ETW)-based activity tracing for a larger surface area. This enables Application Performance Management vendors to provide lightweight tools that accurately track the costs of individual requests and activities that cross threads. These events are raised only when ETW controllers enable them.

Изменения в программе Microsoft .NET Framework 4.5.50709.17929 Final (16.08.2012):

• Windows Metro style apps are designed for specific form factors and leverage the power of the Windows operating system. A subset of the .NET Framework 4.5 is available for building Metro style apps for Windows by using C# or Visual Basic. This subset is called .NET for Windows Store apps.

• The Portable Class Library project in Visual Studio 2012 enables you to write and build managed assemblies that work on multiple .NET Framework platforms. Using a Portable Class Library project, you choose the platforms (such as Windows Phone and .NET for Windows Store apps) to target. The available types and members in your project are automatically restricted to the common types and members across these platforms.

• The following features and improvements were added to the common language runtime and to .NET Framework classes
• 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. See the element, which also lists other restrictions on object size and array size.
• Better performance through background garbage collection for servers. When you use server garbage collection in the .NET Framework 4.5, 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.
• Support for the 2008 version of the Internationalized Domain Names in Applications (IDNA) standard when the IdnMapping class is used on Windows 8.
• Delegation of string comparison to the operating system, which implements Unicode 6.0, when the .NET Framework is used on Windows 8. When running on other platforms, the .NET Framework includes its own string comparison data, which implements Unicode 5.x.
• Ability to compute the hash codes for strings on a per application domain basis.

• The Managed Extensibility Framework (MEF) provides the following new features
• Support for generic types.
• Convention-based programming model that enables you to create parts based on naming conventions rather than attributes.
• Multiple scopes.
• A subset of MEF that you can use when you create Metro style apps. This subset is available as a downloadable package from the NuGet Gallery. To install the package, open your project in Visual Studio 2012, choose Manage NuGet Packages from the Project menu, and search online for the Microsoft.Composition package.

• In the .NET Framework 4.5, new asynchronous features were added to the C# and Visual Basic languages. These features add a task-based model for performing asynchronous operations. To use this new model, use the asynchronous methods in the I/O classes.

• 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. For more information, see Resgen.exe (Resource File Generator).

• The .NET Framework 4.5 provides several new features and improvements for parallel computing. These include improved performance, increased control, improved support for asynchronous programming, a new dataflow library, and improved support for parallel debugging and performance analysis.

• ASP.NET 4.5 includes the following new features
• 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.
• Support for unobtrusive JavaScript in client-side validation scripts.
• 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 attacks.
• 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.

• The .NET Framework 4.5 provides a new programming interface for HTTP applications.
• Support is also included for a new programming interface for accepting and interacting with a WebSocket connection by using the existing HttpListener and related classes.
• In addition, the .NET Framework 4.5 includes the following networking improvements
• RFC-compliant URI support.
• Support for Internationalized Domain Name (IDN) parsing.
• Support for Email Address Internationalization (EAI).
• Improved IPv6 support.
• Dual-mode socket support.

• In the .NET Framework 4.5, Windows Presentation Foundation (WPF) contains changes and improvements in the following areas
• The new Ribbon control, which enables you to implement a ribbon user interface that hosts a Quick Access Toolbar, Application Menu, and tabs.
• The new INotifyDataErrorInfo interface, which supports synchronous and asynchronous data validation.
• New features for the VirtualizingPanel and Dispatcher classes.
• Improved performance when displaying large sets of grouped data, and by accessing collections on non-UI threads.
• Data binding to static properties, data binding to custom types that implement the ICustomTypeProvider interface, and retrieval of data binding information from a binding expression.
• Repositioning of data as the values change (live shaping).
• Ability to check whether the data context for an item container is disconnected.
• Ability to set the amount of time that should elapse between property changes and data source updates.
• Improved support for implementing weak event patterns. Also, events can now accept markup extensions.

• In the .NET Framework 4.5, the following features have been added to make it simpler to write and maintain Windows Communication Foundation (WCF) applications
• Simplification of generated configuration files.
• Support for contract-first development.
• Ability to configure ASP.NET compatibility mode more easily.
• Changes in default transport property values to reduce the likelihood that you will have to set them.
• Updates to the XmlDictionaryReaderQuotas class to reduce the likelihood that you will have to manually configure quotas for XML dictionary readers.
• Validation of WCF configuration files by Visual Studio as part of the build process, so you can detect configuration errors before you run your application.
• New asynchronous streaming support.
• New HTTPS protocol mapping to make it easier to expose an endpoint over HTTPS with Internet Information Services (IIS).
• Ability to generate metadata in a single WSDL document by appending ?singleWSDL to the service URL.
• Websockets support to enable true bidirectional communication over ports 80 and 443 with performance characteristics similar to the TCP transport.
• Support for configuring services in code.
• XML Editor tooltips.
• ChannelFactory caching support.
• Binary encoder compression support.
• Support for a UDP transport that enables developers to write services that use "fire and forget" messaging. A client sends a message to a service and expects no response from the service.
• Ability to support multiple authentication modes on a single WCF endpoint when using the HTTP transport and transport security.
• Support for WCF services that use internationalized domain names (IDNs).

• State machine workflows, which were first introduced as part of the .NET Framework 4.0.1 (.NET Framework 4 Platform Update 1). This update included several new classes and activities that enabled developers to create state machine workflows. These classes and activities were updated for the .NET Framework 4.5 to include
• The ability to set breakpoints on states.
• The ability to copy and paste transitions in the workflow designer.
• Designer support for shared trigger transition creation.
• Activities for creating state machine workflows, including: StateMachine, State, and Transition.

• Enhanced workflow search capabilities in Visual Studio, including Quick Find and Find in Files.
• Ability to automatically create a Sequence activity when a second child activity is added to a container activity, and to include both activities in the Sequence activity.
• Panning support, which enables the visible portion of a workflow to be changed without using the scroll bars.
• A new Document Outline view that shows the components of a workflow in a tree-style outline view and lets you select a component in the Document Outline view.
• Ability to add annotations to activities.
• Ability to define and consume activity delegates by using the workflow designer.
• Auto-connect and auto-insert for activities and transitions in state machine and flowchart workflows.
• Storage of the view state information for a workflow in a single element in the XAML file, so you can easily locate and edit the view state information.
• A NoPersistScope container activity to prevent child activities from persisting.

• Workflow projects that use Visual Basic will use Visual Basic expressions, and C# workflow projects will use C# expressions.
• C# workflow projects that were created in Visual Studio 2010 and that have Visual Basic expressions are compatible with C# workflow projects that use C# expressions.

• The new WorkflowIdentity class, which provides a mapping between a persisted workflow instance and its workflow definition.
• Side-by-side execution of multiple workflow versions in the same host, including WorkflowServiceHost.
• In Dynamic Update, the ability to modify the definition of a persisted workflow instance.
• Contract-first workflow service development, which provides support for automatically generating activities to match an existing service contract.

Изменения в программе Microsoft .NET Framework 4.0.30319.1 Final (13.04.2010):

• Performance improvement including better multicore support, background garbage collection, and profiler attach on server.
• New memory mapped file and numeric types.
• Easier debugging including dump debugging, Watson minidumps, mixed mode debugging for 64 bit and code contracts.
• Innovations in the Visual Basic and C# languages, for example statement lambdas, implicit line continuations, dynamic dispatch, and named/optional parameters.

• The Entity Framework enables developers to program against relational databases using .NET objects and Language Integrated Query (LINQ). It has many new features, including persistence ignorance and POCO support, foreign key associations, lazy loading, test-driven development support, functions in the model, and new LINQ operators. Additional features include better n-tier support with self-tracking entities, customizable code generation using T4 templates, model first development, an improved designer experience, better performance, and pluralization of entity sets.
• WCF Data Services is a component of the .NET Framework that enables you to create REST-based services and applications that use the Open Data Protocol (OData) to expose and consume data over the Web. WCF Data Services has many new features, including enhanced BLOB support, data binding, row count, feed customization, projections, and request pipeline improvements. Built-in integration with Microsoft Office 2010 now makes it possible to expose Microsoft Office SharePoint Server data as an OData feed and access that data feed by using the WCF Data Services client library.

• More control over HTML, element IDs and custom CSS that make it much easier to create standards-compliant and SEO-friendly web forms.
• New dynamic data features including new query filters, entity templates, richer support for Entity Framework 4, and validation and templating features that can be easily applied to existing web forms.
• Web forms support for new AJAX library improvements including built-in support for content delivery networks (CDNs).

• Added support for Windows 7 multi-touch, ribbon controls, and taskbar extensibility features.
• Added support for Surface 2.0 SDK.
• New line-of-business controls including charting control, smart edit, data grid, and others that improve the experience for developers who build data centric applications.
• Improvements in performance and scalabilit
• Visual improvements in text clarity, layout pixel snapping, localization, and interoperability.