Silverlight 2 CoreCLR

Bringing the power of .NET to the net

Andrew Pardoe, Common Language Runtime

• Programming with the Silverlight 2 .NET Framework is the right client-side solution for the web

Agenda

• Programming with the Silverlight 2 .NET Framework is the right client-side solution for the web

• We did some really cool things to make .NET programming fit web scenarios

Agenda

• Programming with the Silverlight 2 .NET Framework is the right client-side solution for the web

• We did some really cool things to make .NET programming fit web scenarios

• The web application model makes some unfamiliar .NET features shine

Agenda

A quick introduction to Silverlight 2

20 years of progress

Silverlight is differentWhat’s wrong with existing Web

technologies?• They require specialized knowledge• They have weak development tool support

Silverlight uses your existing .NET skills• .NET is the world’s most popular platform• WPF enables rich, reusable UI design

Use the world’s best development tools• Visual Studio• Expression Studio

Silverlight offers...

Rich, interactive applications• Silverlight 2 features• Adaptive streaming of VC-1 high-def video• Animation, vector graphics, scalable text

• Silverlight 3 features• H.264 high-def video support• 3D graphics & GPU acceleration

Broad customer reach• Fast, simple install• Cross-platform support

Netflix “Watch Now”

DEMO

Silverlight Chess

Bringing .NET to the net

Web development

Design and development• WPF provides a better workflow through

a clean interface separating development from design

Deployment• Simplified deployment: just create

a .XAP and link to it from your web page

The rest of the CLR is the same

XAML

eXtensible Application Markup Language• Declarative language describes user

interface• UI elements map directly to .NET objects• Created with Expression Blend• Visual Studio contains a WPF designer (“Cider”)

XAML

eXtensible Application Markup Language• Declarative language describes user

interface• UI elements map directly to .NET objects• Created with Expression Blend• Visual Studio contains a WPF designer (“Cider”)

Design with Cider

Developer != DesignerCider is targeted to developers• Toolbox of XAML controls• Gridlines, zoom, split screen

Use Cider to define the interface between functional code and UI elements• x:Name names a object that C# can use• Event handlers hook up actions to

functions

Hosting CoreCLR

NPCtrl.dll: Hosted in the browser through ActiveX

AGCore.dll: Silverlight Presentation Foundation

CoreCLR.dllMSCorLib.dll: .NET Framework for SilverlightSystem.*.dll

XAML

Sandboxed executionSilverlight applications execute in a

sandbox• One AppDomain per .XAP• AppDomainManager controlled by Silverlight

Communicate through the HTML DOM

Application models

.NET for Silverlight is the same across desktop and browser application models• Managed languages are the same• WPF and BCL are subsets of the desktop

CoreCLR is the same as the desktop CLR• JIT focuses on startup time• GC runs in interactive (non-server) mode

DEMO

Porting between browser and desktop

So what’s different?

Execution engine is 100% compatible• Tuned for interactive applications

BCL (and WPF) are subsets of the desktop• Some things not applicable on the web• Code Access Security removed• No support for full-trust scenarios

APIs consistent across application models

Mac OS X support

CoreCLR, MSCorLib, and other platform

assembliesperform system calls

Platform Adaptation

Layer

Mac OS X (Darwin)

Win32

CoreCLR is...

Smaller• Exposes the subset of functionality that

makes sense for the web application model

More secure• Web applications are partial trust

Consistent and compatible• Reuse your existing skills across desktop

and web application models

Unfamiliar features that you will love

File system access

Accessing storage

Increasing storage

Defense in depth

Silverlight integration

Transparent code

Security Transparency model replaces CASCode is divided into three groups• Transparent code cannot perform actions

requiring escalated privilege• Security Critical code does all work

requiring escalated privilege

Transparent code cannot call Security Critical code directly

SafeCritical code

Transparent User code wants to write to a file on disk

[SecurityCritical] Platform code (full-trust) calls Win32 functions

[SafeCritical]Validates that request is safe and appropriate

In-process side by sideCLR has never been able to run side

by side with itself in a single processCoreCLR is not intended to replace

desktop• If we want to run in a managed

browser, we need Inproc SxS• You don’t need to worry about a CLR

being installed on the user’s machine

DEMO

CoreCLR and desktop CLR in one process

DLR

Dynamic Language Runtime brings • IronPython• IronRuby

DLR services are usable by any language• Dynamic type system• Dynamic method dispatch• Dynamic code generation

DEMO

DLR Console

Silverlight .NET Framework is the right choice for client-side web applications• You already know how to code

against the Silverlight 2 .NET Framework

• The libraries are targeted toward the browser application model

• Silverlight is small, fast and secure

What you’ve learned

Other sessions

Silverlight liiketoimintasovelluksissa17:30 – 18:30 5.3.2009

An Introduction to F# 09:30 – 10:30 6.3.2009Code Contracts, Pex and CHESS 11:00 – 12:00 6.3.2009.NET Common Language Runtime 4 16:00 – 17:00 6.3.2009

Questions?More questions?

mailto://Andrew.Pardoe@microsoft.com Silverlight – Get Started

http://silverlight.net/GetStarted/Great CLR blogs on MSDN

http://blogs.msdn.com/clrteam CLR blog links to other great CLR team blogs

Scott Guthrie’s bloghttp://weblogs.asp.net/scottgu

Where to find these slideshttp://blogs.msdn.com/apardoe