.NET 4.5, Just the good StuffWilliam TullochSenior ConsultantReadify

Mahesh Krishnan Principal ConsultantReadify

DEV215

A shameless plug

AgendaWhat are we going to cover?

The big pictureCore FrameworkWeb stuffThe three pillars of .NET 3.0 (WCF, WPF & WF)Other cool stuff

10 Years ago

A brief history of the .NET frameworkFe

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2002

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4.0

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2012

.NET 4.5

What has influenced this release?

Improving asynchronous operationsWindows 8 & WinRTNuGetPerformanceUsers’ Voice

Core Framework

async/await

Demo

A simple example

async/await

That was easy but …

All things asynchronous

Stream, TextWriter and TextReader have new async methods for expensive operations

Classes in System.Data.Common & System.Data.SqlClient now provide async methods

In WCF generating a proxy will create both synchronous and asynchronous operations by default

Identity

Since .NET 1.0 …

IIdentity

WindowsIdentity GenericIdentity FormsIdentity

The IIdentity interface public interface IIdentity{

string AuthenticationType{ get; }

bool IsAuthenticated{ get; }

string Name{ get; }}

Since .NET 1.0 …

IPrincipal

WindowsPrincipal GenericPrincipal FormsPrincipal

The IPrincipal interface public interface IPrincipal{

IIdentity Identity{ get; }

bool IsInRole(string role);}

Now in .NET 4.5

ClaimsIdentity

WindowsIdentity GenericIdentity FormsIdentity

IIdentity

The ClaimsIdentity classpublic class ClaimsIdentity : IIdentity{ //constructors removed to simply view // Properties public virtual string Name { get; } public virtual string AuthenticationType { get; } public virtual bool IsAuthenticated { get; }

public virtual IEnumerable<Claim> Claims { get; } public ClaimsIdentity Actor { get; set; } public object BootstrapContext { get; set; } public string Label { get; set; } public string NameClaimType { get; } public string RoleClaimType { get; }

//Helper methods for working with claims removed}

Now in .NET 4.5

ClaimsPrincipal

WindowsPrincipal GenericPrincipal FormsPrincipal

IPrincipal

The ClaimsPrincipal classpublic class ClaimsPrincipal : IPrincipal{ // Properties public virtual IIdentity Identity { get; } public virtual IEnumerable<Claim> Claims { get; } public static ClaimsPrincipal Current { get; } public virtual IEnumerable<ClaimsIdentity> Identities { get; }

public virtual bool IsInRole(string role); //Helper methods for claims removed}

A quick look at claims

Moving on from Role-based identity

AD in Windows Server 2012 can now export claims

Existing identity management doesn’t have to change for existing apps when upgrading to .NET 4.5

Windows Identity Foundation is now built into .NET 4.5

Portable Class Libraries

Portable Class Libraries

Some other things worth mentioning

Profile Optimisation and multicore JIT

Timeout support for regular expressions

New System.IO.Compression namespace

WeakReference<T>

Culture definition for the application domain

All things web

Web API

Http programming model – helps in writing RESTful appsFull support for routes

Content negotiation

Query composition

Can be self-hosted

Creating a simple REST service

Working with the HttpClient

Web Sockets

Web Sockets

Full duplex, bi-directional communication

Built on HTTP, thus can traverse firewalls and proxies

Supports binary and UTF-8 payloads

Supported in WinRT, IE10, IIS 8, ASP.NET 4.5 and WCF 4.5on Windows 8 and Windows Server 2012

ASP.NET

Web forms

Strongly typed data controls and model binding

Improved async support

Built-in minification and bundling of Javascript & CSS

Server controls updated for HTML 5

…

MVC 4

Razor enhancementsChanges to the template Async controller actionsImproved support for mobile development …

ASP.NET

The pillars of .NET 3.0

WCF

What’s new in WCF

Easier to ConfigureProxies define async methods by defaultCan create explicit task-based async operations WebSockets and UDP protocols supportedWCF support for Windows 8 apps

Using WCF in a Windows 8 app

WPF

What’s new in WPF

The Ribbon ControlValidating data asynchronouslyData Binding Changes

Delay property bindingBinding to static properties

Markup extensions for events…

Workflow Foundation

What’s in new in WF

C# expressions

Contract-first workflow services

Workflow versioning - WorkflowIdentity

Authoring & designer improvements

Other cool stuff

MEF 2.0

MEF 2.0

Support for open generic parts

Convention-based registration

Composition scoping enhancements

Diagnostic improvements

MEF for Metro & web apps

MEF in Windows 8

The TPL

What’s new in the TPL

Performance

New methods

Run()

Delay()

WhenAny()

WhenAll()

FromResult()

The Progress<T> class

TPL Dataflow

What is TPL Dataflow (TDF)?

“TPL Dataflow (TDF) is a new .NET library for building concurrent applications. It promotes actor/agent-oriented designs through primitives for in-process message passing, dataflow, and pipelining. TDF builds upon the APIs and scheduling infrastructure provided by the Task Parallel Library (TPL), and integrates with the language support for asynchrony provided by C#, Visual Basic, and F#.”

TDF is …

A set primitives referred to as blocks

A block essentially consists of a queue/buffer and a Task

Some examples of blocks are:

ActionBlock

TransformBlock

BufferBlock

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