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

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/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

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)

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

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

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

http://shrinkster.com/1cu9

.NET Framework

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)

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

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“

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

Public Function GetName () As String

Public Sub DoSomething()

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

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

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

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

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

3 things…

PeterGfader@ssw.com.au

http://peitor.blogspot.com

Thank You!

Gateway Court Suite 10 81 - 91 Military Road Neutral Bay, Sydney NSW 2089 AUSTRALIA

ABN: 21 069 371 900

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

info@ssw.com.auwww.ssw.com.au

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