lap around .net 4

A Tour of .NET 4Scott Hanselman

Principal Program Manager Leadscottha@microsoft.com @shanselman on Twitter

Cost Cuttingin VS 2010

Layoffs.

Layoffs.

Layoffs.

Layoffs.

Layoffs.

A Look Back…

.NET 1.0 .NET 1.1 .NET 2.0

3.0

3.5

.NET 4

2002 2003 2010 RTM2005-08

CLR 1.0 CLR 1.1 CLR 2.0 CLR 4

SP1

<configuration> <system.web> <compilation debug="true” targetFramework="4.0" /> </system.web></configuration>

Web Forms 4 - Client ID

Web Forms 4 - Client ID

Clean HTML

Ability to specify client IDs on controlsImproves client script and CSS supportClientIdMode = Static, Predictable, Auto, Inherit

CSS rendering supportRemove the need to use CSS adaptersDefer to CSS and bypass existing style propertiesSupport non-table-based HTML rendering

ViewState improvementsDisable at app/page level, enable per control

Core ASP.NET Improvements

Cache ExtensibilityEnable disk based cachingIntegrate with new “Velocity” distributed cache

Automatically Pre-Start ApplicationsEnable applications to precache/load data

Perf Monitoring on a per-application basisSyntax for automatically HTML encoding

<%: Message %>

Deployment

End to end packaging and deploying of web applications Enables customized configurations

Supports databases, SSL certs, custom registry entries, file ACLs, etcWorks great with hosted environments

ASP.NET Web Forms 4Client Id / Routing

demo

Microsoft AJAX CDN

Free CDN hosting of AJAX library scriptsASP.NET AJAX 4jQuery and jQuery Validation

<script src=“http://ajax.microsoft.com/ajax/jquery/jquery-1.3.2.min.js” type="text/javascript“ />

Built-in support with <asp:scriptmanager>

AJAX 4 - Client Templates

Server-Side (WebForms):<ItemTemplate>

<li><%# Eval("Name") %></li></ItemTemplate>

Client-Side<ul class="sys-template">

<li>{{ Name }}</li></ul>

AJAX 4 - DataContext

ASMX

WCF

ADO.NETData Services

ASP.NET MVCJsonResult

Etc.

1. Request

2. JSON DataData

Context

3. Modify Data 4. Save Data

* DataContext includes change tracking automatically

ASP.NET AJAX 4Client Templates/ Odata

demo

WPF 4

Data Grid Ribbon Multi-Touch Windows 7 Enhancements

Managed Extensibility Framework?

The Managed Extensibility Framework (MEF) is a new library in the .NET Framework that enables greater reuse of applications and components. Using MEF, .NET applications can make the shift from being statically compiled to dynamically composed

Open/Closed Principle

Software entities should be open for extension,

but closed for modification.

Client ApplicationsWPF 4 DataGrid / MEF

demo

The Parallel Computing Initiative

Letting the brightest developers solve business problems, not concurrency problems.

“Concurrency for the masses”

Parallel Computing with .NET 4

1. Task Parallel Library (TPL)2. Parallel LINQ (PLINQ)3. Coordination Data Structures

(CDS)4. System.Threading

Improvements

Parallel LINQ

Parallel LINQ (PLINQ) enables developers to easily leverage manycore with a minimal impact to existing LINQ programming model

var q = from p in people        where p.Name == queryInfo.Name && p.State == queryInfo.State && p.Year >= yearStart && p.Year <= yearEnd        orderby p.Year ascending        select p;

.AsParallel()

Parallel ComputingParallel LINQ and PFX

demo

Common Language Runtime

Statically-Typed

C#VB

RubyPython

Dynamically-Typed

Why the DLR?

Common Language Runtime

Statically-Typed

C#VB

RubyPython

Dynamically-Typed

Dynamic Language Runtime

Why the DLR?

PythonBinder

RubyBinder

COMBinder

RuntimeBinder

RuntimeBinder

.NET Dynamic Programming

Dynamic Language Runtime

Expression Trees Dynamic Dispatch Call Site Caching

IronPython IronRuby C# VB.NET Others…

DLR IntegrationDynamic for all!

demo

Dynamically Typed Objects

Calculator calc = GetCalculator();int sum = calc.Add(10, 20);

object calc = GetCalculator();Type calcType = calc.GetType();object res = calcType.InvokeMember("Add", BindingFlags.InvokeMethod, null, new object[] { 10, 20 });int sum = Convert.ToInt32(res);

ScriptObject calc = GetCalculator();object res = calc.Invoke("Add", 10, 20);int sum = Convert.ToInt32(res);

dynamic calc = GetCalculator();int sum = calc.Add(10, 20);

Statically typed to be

dynamic

Dynamic method invocation

Dynamic conversion

Type Equivalence

Interop Assemblies translate between managed code and COM

For each interface, struct, enum, delegate, and member, contains a

managed equivalent with marshalling data

Primary Interop Assemblies cause many pain points…

However!

Go Away, PIA!

1. Compilers embed the portions of the interop assemblies that the add-ins actually use

2. Runtime ensures the embedded definitions of these types are considered equivalent

CLR 4Type Equivalence

demo

.NET Framework Compatibility

.NET 4.0 is a highly compatible release.NET 4.0 does not auto–roll forward

You must add a configuration file with a specific switch to get 3.5 apps to run on 4.0

CLR 2 - Existing Side-By-Side

Host Process (i.e. Outlook)

.NET 2.0

2.0 add-in

3.03.5

3.0 add-in

3.5 add-in

1.1 add-in

.NET 1.1

CLR 4 - In-Process Side-By-Side

.NET 2.0.NET 4.0

2.0 add-in

3.03.5

Host Process (i.e. Outlook)

3.0 add-in

3.5 add-in

4.0 add-in

CLR 4In-Process Side-By-Side

demo

Be well,write good code,and stay in touch

scottha@microsoft.comhttp://hanselman.com

@shanselman on Twitter

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