Summary C# and the .NET Platform, Second Edition

by Andrew Troelsen ISBN:1590590554

This chapter introduced the fine art of building a user interface with the types contained in the

Apress © 2003 (1200 pages)

System.Windows.Forms namespace. It began by examining the basic steps you must take to build a

This comprehensive text starts with a brief overview of the

custom Form. ThisC#entailedlanguageaanddiscussionthen quicklyof themovesApplicationto keyobject,technicandl andits various members. As you have seen, the Form typearchitecturgains almajorityissues forof.itsNETfunctionalitydevelopers.from a rather long chain of base types.

During the course of this chapter, you learned how to build topmost menus (and pop-up menus) and how

Tableto respondof Contentsto a number of menu events. You also came to understand how to further enhance your Form C#objectsand theusing.NETtoolbarsPlatform,andSecondstatusEditionbars. Finally, this chapter illustrated how to construct MDI applications

using Windows Forms.

Introduction

Part One - Introducing C# and the .NET Platform

Chapter 1 - The Philosophy of .NET

Chapter 2 - Building C# Applications

Part Two - The C# Programming Language

Chapter 3 - C# Language Fundamentals

Chapter 4 - Object-Oriented Programming with C#

Chapter 5 - Exceptions and Object Lifetime

Chapter 6 - Interfaces and Collections

Chapter 7 - Callback Interfaces, Delegates, and Events

Chapter 8 - Advanced C# Type Construction Techniques

Part Three - Programming with .NET Assemblies

Chapter 9 - Understanding .NET Assemblies

Chapter 10 - Processes, AppDomains, Contexts, and Threads

Chapter 11 - Type Reflection, Late Binding, and Attribute-Based Programming

Part Four - Leveraging the .NET Libraries

Chapter 12 - Object Serialization and the .NET Remoting Layer

Chapter 13 - Building a Better Window (Introducing Windows Forms)

Chapter 14 - A Better Painting Framework (GDI+)

Chapter 15 - Programming with Windows Forms Controls

Chapter 16 - The System.IO Namespace

Chapter 17 - Data Access with ADO.NET

Part Five - Web Applications and XML Web Services

Chapter 18 - ASP.NET Web Pages and Web Controls

Chapter 19 - ASP.NET Web Applications

Chapter 20 - XML Web Services

Index

List of Figures

List of Tables

Chapter C#14:andAtheBetter.NET Platform,PaintingSecond EditionFramework (GDI+)

Overview This comprehensive text starts with a brief overview of the C# language and then quickly moves to key technical and

Theprevious chapterarchitecturalintroducedissuesyouforto .theNETfined velopersart of building. a traditional main window using various types contained within the System.Windows.Forms namespace. Now that you can assemble a Form to represent the shell of your GUI-based applications, the next task is to understand the details of rendering

Tablegraphicalof Contentsdata (including stylized text and image data) onto the Form's client area.

C# and the .NET Platform, Second Edition

We begin by taking a high-level view of the numerous drawing-related namespaces, and examine the

Introduction

process of responding to (and initiating) paint sessions. You will also discover various ways of obtaining

Part One - Introducing C# and the .NET Platform

(and configuring) a Graphics object. Once you understand the general layout of the GDI+ landscape, the

Chapter 1 - The Philosophy of .NET

remainder of this chapter covers how to manipulate colors, fonts, geometric shapes, and graphical

Chapter 2 - Building C# Applications

images. This entails understanding related types such as Brush, Pen, Color, Point, and Rectangle (among

others). This chapter also explores a number of GDI+-centric programming techniques such as

Chapter 3 - C# Language Fundamentals

nonrectangular hit testing and GUI drag-and-drop logic.

Chapter 4 - Object-Oriented Programming with C#

Chapter 5 - Exceptions and Object Lifetime

The chapter concludes by exploring the new .NET resource format. While technically not part of GDI+ Chapterproper,6it does- Interfacesinvolveandthe manipulationCollections of graphical data (which in my opinion is "GDI+-enough" to be

Chaptpresentedr 7 -here)Callback. Here,Interfaces,you learnDelegates,how to embedand Eventsyour application's external resources directly into a .NET

Chapterassembly8 to- Advancedship moreC# portableType Constructionbinary imageTechniques. During the process, you explore the System.Resources

PartnamespaceThree - Programmingand learn howithto .performNET Assembliesread/write operations on the underlying *.resx and *.resources files Chapterby hand,9 as- Understandingwell as pull resources.NET Assembliesfrom an assembly at runtime using the

System.Resources.ResourceManager type.

Chapt r 10 - Processes, AppDomains, Contexts, and Threads

Chapter 11 - Type Reflection, Late Binding, and Attribute-Based Programming

Note If you are a Web programmer by trade, you may think that GDI+ is of no use to you. However, as

you will see later in this text during our examination of ASP.NET, GDI+ is not limited to traditional

Chapter 12 - Object Serialization and the .NET Remoting Layer

desktop applications and is extremely relevant for Web applications.

Chapter 13 - Building a Better Window (Introducing Windows Forms) Chapter 14 - A Better Painting Framework (GDI+)

Chapter 15 - Programming with Windows Forms Controls

Chapter 16 - The System.IO Namespace

Chapter 17 - Data Access with ADO.NET

Part Five - Web Applications and XML Web Services

Chapter 18 - ASP.NET Web Pages and Web Controls

Chapter 19 - ASP.NET Web Applications

Chapter 20 - XML Web Services

Index

List of Figures

List of Tables

Overview ofC#theandSystemthe .NET Platform,.DrawingSecondNamespaceEdition

A vast majority of the types used when programming GDI+ applications are found within the

Apress © 2003 (1200 pages)

System.Drawing namespace. As you would expect, there are classes that represent images, brushes,

This comprehensive text starts with a brief overview of the

pens, and fonts. Furthermore,C# language andSystemthen.Drawingquickly movesdefinesto akeynumbertechnicalof relatedand types such as Color, Point, and Rectangle. Tablearchitectur14-2allistsissuessomefor(but.NETnotdevelopersall) of the. core types.

Table 14-2: Core Types of the System.Drawing Namespace

Apress © 2003 (1200 pages)

Many of these core types make substantial use of a number of related enumerations, most of which are

This comprehensive text starts with a brief overview of the

also defined within the System.Drawing namespace. As you can guess, many of these enumerations are

C# language and then quickly moves to key technical and

used to configurearchitecturalthe look andissufeelsofforbrushes.NET developersand pens. . For example, ponder the types listed in Table 14- 3.

MFC) you should feel right at home with the functionality provided by the .NET System.Drawing

PartnamespaceFive - Web. NextApplicationsup, let's examineand XML WthebsetServicesof basic utility types that are commonly used in GDI+

Chapterprogramming18 - ASP. .NET Web Pages and Web Controls

Chapter 19 - ASP.NET Web Applications

Chapter 20 - XML Web Services

Index

List of Figures

List of Tables

ExaminingC#theandSystemthe .NET Platform,.DrawingSecondUtilityEditionTypes

by Andrew Troelsen ISBN:1590590554

Many of the drawing methods defined by the System.Drawing.Graphics class require you to specify the

Apress © 2003 (1200 pages)

position or area in which you wish to render a given item. For example, the DrawString() method requires

This comprehensive text starts with a brief overview of the

you to specify theC#locationl nguageto renderand thenthequicklytext stringmovesontothekeyControltechnical-derivedand type. Given that DrawString() has been overloadedarchitecturala number ofissuestimes,forthis.NETpositionaldevelopersparameter. may be specified using an (x,y) coordinate

or the dimensions of a "box" to draw within. Other GDI+ type methods may require you to specify the width and height of a given item, or the internal bounds of a geometric image.

Table of Contents

C#Toandspecifythe .NETsuchPlatform,information,SecondtheEditionSystem.Drawing namespace defines the Point, Rectangle, Region, and

Size types. Obviously, a Point represents some (x,y) coordinate. Rectangle types capture a pair of points

Introduction

representing the upper left and lower right bounds of a rectangular region. Size types are similar to

Part One - Introducing C# and the .NET Platform

Rectangles, however these structures represent a given dimension using a given length and width.

Chapter 1 - The Philosophy of .NET

Regions provide a way to represent and manipulate nonrectangular drawing surfaces.

Chapter 2 - Building C# Applications

Part Two - The C# Programming Language

The member variables used by the Point, Rectangle, and Size types are internally represented as an

Although this type is most commonly used when working with GDI+ and user interface applications, do be aware that you may make use of any utility type from any application. To illustrate, here is a console application that makes use of the System.Drawing.Point type (be sure to set a reference to System.Drawing.dll).

using System;

using System.Drawing;

namespace UtilTypes

{

public class UtilTester

C# and the .NET Platform, Second Edition

{

by Andrew Troelsen ISBN:1590590554 public static int Main(string[] args)

{ Apress © 2003 (1200 pages)

This compCreateehensive text starts with a brief overview of the

// and offset a point.

C# language and then quickly moves to key technical and

Point pt = new Point(100, 72); architectural issues for .NET developers.

Console.WriteLine(pt);

pt.Offset(20, 20);

Console.WriteLine(pt);

Table of Contents

// Overloaded Point operators.

C# and the .NET Platform, Second Edition

Point pt2 = pt;

Introduction

if(pt == pt2)

Part One - Introducing C# and the .NET Platform

WriteLine("Points are the same");

Chapter 1 - The Philosophy of .NET

else

Chapter 2 - Building C# Applications

WriteLine("Different points");

Part Two - The C# Programming Language

// Change pt2's X value.

Chapter 3 - C# Language Fundamentals

pt2.X = 4000;

Chapter 4 - Object-Oriented Programming with C#

// Now show each X value:

Chapter 5 - Exceptions and Object Lifetime

Console.WriteLine("First point: {0} ", pt);

Chapter 6 - Interfaces and Collections

Console.WriteLine("Second point: {0} ", pt2);

Chapter 7 - Callback Interfaces,return 0;Delegates, and Events

Chapter 8 - Advanced} C# Type Construction Techniques

Part Three} - Programming with .NET Assemblies

Chapter} 9 - Understanding .NET Assemblies

Chapter 10 - Processes, AppDomains, Contexts, and Threads

Chapter 11 - Type Reflection, Late Binding, and Attribute-Based Programming

Part Four - Leveraging the .NET Libraries

ChapterRectangle(F)12 - Object SerializationType and the .NET Remoting Layer

Chapter 13 - Building a Better Window (Introducing Windows Forms)

ChapterRectangles,14 - AlikeB tterPoints,Paintingare usefulFrameworkin any(GDI+)application (GUI-based or otherwise). Some core members to be

aware of are listed in Table 14-5.

Chapter 15 - Programming with Windows Forms Controls

Chapter 16 - The System.IO Namespace

Table 14-5: Key Members of the Rectangle(F) Types

Chapter 17 - Data Access with ADO.NET

// Get the interior of this rectangle.

C# and the .NET Platform, Second Edition

Rectangle r = new Rectangle(0, 0, 100, 100); ISBN:1590590554 by Andrew Troelsen

Region rgn = new Region(r);

Apress © 2003 (1200 pages)

This comprehensive text starts with a brief overview of the C# language and then quickly moves to key technical and architectural issues for .NET developers.

Once you do have the interior dimensions of a given shape, you may manipulate it using the core members shown in Table 14-7.

Table of Contents

C#Tableand the14-7:.NETMembersPlatfo m,ofSecondthe RegionEditionClass

Part One - Introducing C# and the .NET Platform

Member

Chapter 1 - The Philosophy of .NET

ChapterComplement()2 - Building C#UpdatesApplicationsthis Region to the portion of the specified graphics object that does

Part Two - The C# Programmingnot intersectLanguagewith this Region.

Chapter 20 - XML Web Services

I'm sure you get the general idea behind these coordinate primitives. You will have a chance to work with

Index

each of them during the course of this chapter (and any time you program against GDI+). Now then, on to

List of Figures

some more interesting material!

List of Tables

CODE