NET and C# introduction

Delivering Awesome Web Applications

Developing Windows and Web Applications using Visual Studio.NET

Peter Gfader


Agenda

1. About SSW and Presenters

2. Student Introduction

3. Course Overview

4. .NET Overview

5. VS. Net Overview/ Demo

6. Design Patterns

7. Hands on lab


SSW Consulting has 18 years development / consulting experience.

Adam Cogan is the Chief Software Architect at SSW

1of 3 Microsoft Regional Directors in Australia

About SSW


SSA @ SSW

Loves C# and .NET (Java not anymore)

Specializes in

Windows Forms ASP.NET TFS testing Automated tests Silverlight

Peter Gfader


Attendance

Please initial the sheet next to your name

Hands On Lab

Please get Peter to initial sheet

Homework

Certificate

At end of 10 sessions

Admin Stuff


Name

Company

Experience

IT Programming .NET C# / VB Database

Goals for the course

Anything else after 9PM

Introductions


http://www.ssw.com.au/ssw/Events/2010UTSNET/

Part 1: .NET WinForms

1. Overview of .NET & C# basics2. C# Advanced + Data in Forms3. Usability - Rules to Better Windows Forms4. Deployment and Security of Windows Forms5. Web Services and Threading

The 10 Sessions

http://www.ssw.com.au/ssw/Events/2010UTSNET/


http://www.ssw.com.au/ssw/Events/2010UTSNET/default.aspx

Part 2: .NET Webforms

1. Overview of ASP.NET Webforms2. Data in Webforms3. Usability

• Rich Web Forms and • Other ASP.NET Features

4. Web Security 5. Advanced Topics & Future Technology

The 10 Sessions

http://www.ssw.com.au/ssw/Events/2010UTSNET/default.aspx


What is .NET?

What is C#?

Language Differences VB + C#

Review of OOP

N-Tier Solution Design

Demo: Creating WinForms

Session 1: Overview


.NET is the Microsoft Web services strategy to connect information, people, systems, and devices through

software

Microsoft, beginning 2000

What is .NET?


An application development platform from Microsoft

Runtime (Virtual machine)

Tools

Languages, IDE, …

Rapidly develop secure and robust software

Web and Windows

Full support for object-oriented programming

What is .NET?


C# compiler

Intermediate Language

(MSIL)

Common Language Runtime

Compiles to MSIL

Represents codeindependent from src

Executes MSIL


What is .NET?

Language Independence VB C# F# C++ IronPython

Any language that supports the Common Language Runtime (CLR) Specification


C:\Windows\Microsoft.NET

Tools


2002 - .Net 1.0 / Visual Studio.NET

2003 - .Net 1.1 / Visual Studio 2003



2008 - .Net 3.5sp1 (added EDMX)

2010 - .Net 4.0/ VS.Net 2010

Details on http://shrinkster.com/1cu8

History of .NET and Visual Studio

http://shrinkster.com/1cu8


Over 4500 classes that provides features such as:

• Data access and connectivity (ADO.NET)• User Interfaces (WinForms, WPF)• Web Applications (ASP.NET, Silverlight)• Network Communication (WCF)• Workflow (WF)

What is the .NET Framework?


Evolution

The whole .NET FX 3.5

http://shrinkster.com/1515

Only new types in .NET 4


.NET Framework

http://shrinkster.com/1515



Allows for language independence

Memory Management (allocation and de-allocation of memory)

Performs automatic garbage collection with the elimination of pointers

No more memory leaks (in theory at least!)

Exception Handling

Security (sandbox from the OS– cannot run malicious code)

Converts the IL byte code into runtime code

CLR =Common Language Runtime


Main programming language for .NET framework

Based on C

Object Oriented

Built with hindsight

Java Very similar to Java C++ Very similar to C++

A ‘modern language’ that did not inherit the ‘junk’ from C++ (eg header files, syntax)

C# ?


Variable declaration

bool isVeryLong;

Variable assignment

isVeryLong = false;

Control statements

if (yourInput.Length > 10){

isVeryLong = true;}

C# Basis


C# 1.0 – First Version

C# 2.0 – Everything that didn’t fit in 1.0

C# 3.0 – LINQ, functional influence

C# 4.0 – Dynamic Programming

C# 5.0 …

History C# - Anders Hejlsberg


OOP


Terms - I want you to know

#1 Inheritance

#2 Encapsulation

#3 Polymorphism

#4 Abstraction

Classes

Objects

Properties

Methods

Events


Class vs. Object

Object

Instance of a class “Car” has an

instance called “petersCar”

Class Defines abstract

characterizations of a “thing”

• Customer• Employee• Car

Blueprint or template


Properties

Changeable features of objects Eg. „Color“ of a car

Methods

Actions on an object Eg. Car has a method „Accelerate“

Events

Let other objects know about an action Eg. Car has an event „DoorOpened“

Terms


A "square" is a "shape"

#1 Inheritance


A "shape" defines a common property "Color"

A "square" inherits the property "Color"


Information hiding

E.g.A shape hides internal data

1st point 2nd point

#2 Encapsulation


A „Square" has internal fields like „_side“


Appear as another

Be used like another

#3 Polymorphism


var shapes = new List<IShapes>() {

new Square(“Red"),

new Rectangle(“Blue"),

new Triangle(“Red")

};

foreach (var shape in shapes) {

Console.WriteLine(shape.Color +

": " + shape.CalcSize());

}

#3 Polymorphism


Allows inheritance but no instantiation

#4 Abstraction


No instance of a "Shape"


VB.NET versus C#


Variables

Language Differences

' VB Dim FavouriteColour As String = "LightGreen"

// C#String FavouriteColour = "LightGreen";


Methods


'VB

Public Function GetName () As String

Public Sub DoSomething()

//C#

public string GetName() {}

public void DoSomething() {}


Events and Methods



VB Properties


Public Property FirstName() As String Get Return pFirstName End Get Set(ByVal value As String) pFirstName = value End SetEnd Property


C# Properties


private string firstName;

public String FirstName{

get{ return firstName }set{ firstName = value;}

}


Automatic Properties Feature

public String FirstName

{

get; set;

}

Notice no internal variable was declared?

It is created by the compiler

Saves typing and makes code neater

Properties since C# 3.0


Auto Implemented Properties

Collection Initializers

Named parameters

Optional parameters

Lambdas

Can span statements across multiple lines


Collection Initializers (limited)

Named parameters

Optional parameters

Lambdas (limited)


.NET 3.5




Named parameters

Optional parameters

Lambdas




Named parameters

Optional parameters

Lambdas


.NET 4


Visual Studio 2010


Visual Studio 2010


Windows Forms


A UI Component

WinForm – a Window displayed by an application Web Forms are page hosted in a browser

What is a Form?


Textboxes

Buttons

Tool Strip Menu

Picture

Labels

Controls


Reuse a set of controls

e.g. Form with • Billing Address and • Shipping Address

Where an address consists of– Address line 1 – Address line 2 – Suburb – State– Post code

User Controls


Most controls have events

Examples• Clicked• TextChanged• Closing

Event Handlers

Can’t control the order the event gets handled

Events


"Programming"

Able to code in that language

"Understanding .NET“

Understanding the .NET Framework and technology

"Architecture“

Knowing when and what do and why

Architecture vs. Programming


N-Tier Application Simplified


Separate logic and data access from presentation Easier to maintain code Low-coupling

Modularity/Re-use business logic Easily add a different UI

• Web UI• Smart Phone UI

Team Development

Why n-tier?


Keep the users in mind


Keep the users in mind


WPF?


Windows Presentation Foundation

Rich Windows Applications

Great Architecture + Great Graphics

Rapid Prototyping

2D, 3D, Vector, Document Flow, Layouts, Composition, etc.

WPF in a nutshell


The 10 Sessions

Overview of .NET

OOP


n-Tier Application Architecture

Demo: Creating WinForms (C#)

Summary


Creating a Windows Form Application

1. Opening forms2. Menus3. Event handlers4. User controls

Hands ON LAB


The C# tutorial http://www.csharp-station.com/Tutorial.aspx

Online videos and training http://channel9.msdn.com/learn/courses/VS2010/

Nice video to OOPhttp://msdn.microsoft.com/en-us/beginner/cc963989.aspx

More on OOPhttp://en.wikipedia.org/wiki/Object-oriented_programming

Resources 1/2

http://www.csharp-station.com/Tutorial.aspx

http://channel9.msdn.com/learn/courses/VS2010/

http://msdn.microsoft.com/en-us/beginner/cc963989.aspx

http://en.wikipedia.org/wiki/Object-oriented_programming


Design patterns in C#http://www.dofactory.com/Patterns/Patterns.aspx

Winforms tips and trickshttp://peitor.blogspot.com/search/label/winforms

Use controls in Windows Forms!

http://www.telerik.com http://www.devexpress.com http://www.infragistics.com

Beginner Developer Learning Centerhttp://msdn.microsoft.com/en-us/beginner/default.aspx

Resources 2/2

http://www.dofactory.com/Patterns/Patterns.aspx

http://peitor.blogspot.com/search/label/winforms

http://www.telerik.com/

http://www.devexpress.com/

http://www.infragistics.com/

http://msdn.microsoft.com/en-us/beginner/default.aspx


3 things…

[email protected]

http://peitor.blogspot.com

http://peitor.blogspot.com/

http://peitor.blogspot.com/


Thank You!

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Phone: + 61 2 9953 3000 Fax: + 61 2 9953 3105

[email protected]

Education

NET and C# introduction