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Visual Studio 2010and

.NET Framework 4

Training Workshop

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Whats New In

C# 4.0 and Visual Basic 10

Name

TitleOrganization

Email

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Where Were At Today

Our managed languages are starting to share somevery similar features:

Functional

Concise

Declarative

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Why Declarative Matters

Imperative Declarative

What

How

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Addressing Language Trends

Declarative

ConcurrentDynamic

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The Evolution of C#

C# 1.0

C# 2.0

C# 3.0

Managed Code

Generics

LINQ

C# 4.0

Dynamic

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New C# 4.0 Features

1. Late-Binding Support

2. Named and Optional Parameters

3. Improved COM Interop

4. Covariance and Contravariance

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Simplifying Your Code with C# 4.0

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Co-evolving C# and VB

Think ofco-evolution as agame of leap-frog

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Theres a problem when

co-evolution doesnt exist

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The Evolution of Visual Basic

VB1VB3

VB4-VB6

VB7-VB9

Windows ProgrammingMade Easy

ComponentsMade Easy

Power andSimplicity for

.NET

VB10

Continuingthe trend

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New VB10 Features

1. Auto-Implemented Properties

2. Collection Initializers

3. Statement Lambdas

4. Covariance and Contravariance

5. Implicit Line Continuation

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VB 10

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Why a Dynamic Language Runtime?

Common Language Runtime

Statically-Typed

C#VB

RubyPython

Dynamically-Typed

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Why a Dynamic Language Runtime?

Common Language Runtime

Statically-Typed

C#VB

RubyPython

Dynamically-Typed

Dynamic Language Runtime

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PythonBinder

RubyBinder

COMBinder

JScriptBinder

ObjectBinder

.NET Dynamic Programming

Dynamic Language Runtime

Expression Trees Dynamic Dispatch Call Site Caching

IronPython IronRuby C# VB.NET Others

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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 typedto be dynamic

Dynamic methodinvocation

Dynamicconversion

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Dynamic Language Interop

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Summary

1. Targeting the current trends in programminglanguages

2. Addressing current pain points in developing forWindows and the .NET Framework

3. Laying the foundation to enable developers tosolve tomorrows problems

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