a0089 beginning c sharp 2008 from novice to professional nov 200 morebook vn 7989

this print for content only—size & color not accurate spine = 0.969" 512 page countBeginning C# 2008: From Novice to Professional Dear Reader, This book is about showing you how to writ

this print for content only—size & color not accurate spine = 0.969" 512 page count

Beginning C# 2008:

From Novice to Professional

Dear Reader, This book is about showing you how to write good code in C# 2008, even if you have never programmed before Writing good code can be a challenge—there are so many options, especially in C# 2008 So if you want to really get the most from a programming language, you need to know which features work best

in which situations and understand their strengths and weaknesses It is this understanding that makes the difference between coding and coding well

With this in mind, I have written Beginning C# 2008 to teach you how to use

the C# programming language to solve problems From the earliest chapters, and from the first introductory concepts that you’ll discover about C#, you will

be looking at real programming challenges and learning how C# can be used to solve them As you progress with me through the book, these problems become increasingly more involved and interesting, as I show you how C# features can interact to achieve the programming results you want

By the time you’ve finished reading Beginning C# 2008 and worked through

the sample exercises, you’ll be a confident and very competent C# programmer

You will still have many new explorations of the huge NET Framework API to look forward to in your programming, but you will have a firm foundation for your future career in C#, and you will know exactly where to find all the infor-mation you need to progress confidently with your C# projects

Christian Gross

Author of

How to Code NET

Ajax and REST Recipes

Ajax Patterns

and Best Practices

Foundations of

Object-Oriented Programming

Using NET 2.0 Patterns

A Programmer’s Introduction

to Windows DNA

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Beginning

From Novice to Professional

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Christian Gross

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ISBN-13: 978-1-59059-869-6 ISBN-10: 1-59059-869-5

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Beginning

Beginning C# 2008

From Novice to Professional

Christian Gross

ISBN-10 (pbk): 1-59059-869-5

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The source code for this book is available to readers at http://www.apress.com

Some food for thought when writing software:

“A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.”

“The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes

wrong it usually turns out to be impossible to get at or repair.”

—Douglas Adams, Mostly Harmless

Translator class, 55 whitespace, 63–67 finding substrings, 64 trimming, 63

writing tests before writing code, 65–67 Translator class, 55

Translator.cs file, 55

TrimmingWhitespace( ) method, 63

truth tables, 269

try block, 121, 127–128

try keyword, 120

try/catch block, 134–135

TryParse( ) method, 71–72, 132

type attribute, 344

type casting, 173, 196–197

type command, 279

type constraint, 463–465

type method, 448

TypeName property identifier, 356

typeof(string) parameter, 345

types See also custom-defined types;

number-related types; string types custom, 289–293

Equals( ) method, 292–293 GetHashCode( ) method, 289–292 defining, 283–284

dynamically instantiating using instantiated types, 342–343 using singletons, 341–342 Type-safe, 35

■ U

uint type, 46

ulong type, 46

UML (Unified Modeling Language), 28

unboxing, 235

#undef hashcode, 159

underflow, 43

Unicode, 68

Unified Modeling Language (UML), 28

uniqueidentifier type, 402

Unstable, 352

UpgradeToWriterLock( ) method, 376

usability, 301

User assembly, 223

user interface, 31

user-defined types See custom-defined types

username, 395

ushort type, 46

Value type, 85 value types, 44–45, 235–236 constraints, 81–87 effects of copying data, 82–84 parameters, 85–87

reference types, 84–85 referencing using, 92–94 value variable, 145, 349 ValueType type, 321 variables, class library project, 21–23 verification, 150–153

conditional statements, 150–151 partial classes, 152–153

VerifyExchangeRate( ) method, 152 version numbers, dynamic loading of strongly named assemblies using, 351–354

adding assembly redirection to configuration files, 353–354 versioning assemblies, 352–353 VersionAssembly assembly, 353 versioning assemblies, 352–353 virtual base class method, 192 virtual keyword, 178, 192, 195 Visual C# Express, 1–26 application types, 4 class library project, 17–23 adding to solutions, 17–18 calling functionality, 19–20 constants, 21–23

defining references, 19 moving functionality, 18 variables, 21–23 console application project, 16–17 adding to solutions, 16

“hello, world”, 16 running, 17 setting startup project, 17 Data Source Configuration Wizard, 396 designing relational databases using, 395–403

adding tables, 399–403 configuring Data Source, 396–399 downloading, 2–3

installing, 3–4 navigating user controls of solutions, 13–15

.NET Framework, 23–25 overview, 1

projects, 4 solutions, 4 Windows application project, 5–13 adding comments to, 12–13

“hello, world”, 9–11 renaming solutions, 6–7 running, 7–8

saving solutions, 7 viewing source code, 6 Visual Web Developer Express, 2

■ W

where statement, 463

while loop, 413

whitespace, 63–67

character-by-character comparison, 61–62 finding substrings, 64

responsibility, 57 trimming, 63 writing tests before writing code, 65–67 Windows application project, 5–13

adding comments to, 12–13

“hello, world”, 9–11 renaming solutions, 6–7 running, 7–8

saving solutions, 7 viewing source code, 6 Windows, setting languages/cultures in,

69–70 Windows.Forms Invoke( ) method, 383

Windows.Forms library, 380

Windows\System32 directory, 349

winners table, 402–403 word allo test, 66 worksheet variable, 320 Worksheet<> class, 314, 322, 327 Worksheet<BaseType> type, 304 Worksheet<double> type, 304 Worksheet<string> type, 304 worksheet.Calculate( ) method, 326 WorksheetIdentifiers class, 308 writing exception-safe code, 130–135 default state, 133–134

defensive coding, 130–133 processing warning errors, 134–135 writing tests for currency exchange application, 139–153 base classes, 140–141, 153 C# properties, 143–146 inheritance, 141–143, 147–148 scope modifiers, 148–150 structural code, 140 verification, 150–153

■ X

XML (Extensible Markup Language), 336 XML-based configuration files, 336–337 xsd file, 408

■ Y

_year data member, 186 year parameter, 186 yield keyword, 219–220, 231, 323 yield return statement, 220, 222

■I N D E X 487