C# 7.0 All-in-One For Dummies

Sharpen your knowledge of C# C# know-how is a must if you want to be a professional Microsoft developer. It's also good to know a little C# if you're building tools for the web, mobile apps, or other development tasks. C# 7.0 All-in-One For Dummies offers a deep dive into C# for coders still learning the nuances of the valuable programming language. Pop it open to get an intro into coding with C#, how to design secure apps and databases, and even pointers on building web and mobile apps with C#. C# remains one of the most in-demand programming language skills. The language regularly ranks in the top five among "most in-demand" languages, typically along with Java/JavaScript, C++, and Python. A December 2016 ZDNet article noted 'If your employer is a Microsoft developer, you better know C#." Lucky for you, this approachable, all-in-one guide is here to help you do just that—without ever breaking a sweat! Includes coverage of the latest changes to C# Shows you exactly what the language can (and can't) do Presents familiar tasks that you can accomplish with C# Provides insight into developing applications that provide protection against hackers If you have a basic understanding of coding and need to learn C#—or need a reference on the language in order to launch or further your career—look no further.

Table of Contents:
Introduction 1 About This Book 1 Foolish Assumptions 2 Icons Used in This Book 2 Beyond the Book 3 Where to Go from Here 4 Book 1: The Basics of C# Programming 5 Chapter 1: Creating Your First C# Console Application 7 Getting a Handle on Computer Languages, C#, and .NET 7 Creating Your First Console Application 11 Making Your Console App Do Something 17 Reviewing Your Console Application 18 Introducing the Toolbox Trick 21 Chapter 2: Living with Variability — Declaring Value-Type Variables 23 Declaring a Variable 24 What’s an int? 25 Representing Fractions 27 Handling Floating-Point Variables 28 Using the Decimal Type: Is it an Integer or a Float? 31 Examining the bool Type: Is it Logical? 33 Checking Out Character Types 33 What’s a Value Type? 36 Comparing string and char 37 Calculating Leap Years: DateTime 38 Declaring Numeric Constants 40 Changing Types: The Cast 41 Letting the C# Compiler Infer Data Types 42 Chapter 3: Pulling Strings 45 The Union is Indivisible, and So are Strings 46 Performing Common Operations on a String 48 Comparing Strings 48 What If I Want to Switch Case? 53 Looping through a String 54 Searching Strings 55 Getting Input from the Command Line 57 Controlling Output Manually 62 Formatting Your Strings Precisely 68 StringBuilder: Manipulating Strings More Efficiently 73 Chapter 4: Smooth Operators 75 Performing Arithmetic 75 Performing Logical Comparisons — Is That Logical? 79 Matching Expression Types at TrackDownAMate.com 83 Chapter 5: Getting into the Program Flow 89 Branching Out with if and switch 90 Here We Go Loop-the-Loop 101 Looping a Specified Number of Times with for 112 Nesting Loops 115 Don’t goto Pieces 116 Chapter 6: Lining Up Your Ducks with Collections 119 The C# Array 120 Processing Arrays by Using foreach 126 Sorting Arrays of Data 128 Using var for Arrays 132 Loosening Up with C# Collections 133 Understanding Collection Syntax 134 Using Lists 136 Using Dictionaries 139 Array and Collection Initializers 141 Using Sets 142 On Not Using Old-Fashioned Collections 147 Chapter 7: Stepping through Collections 149 Iterating through a Directory of Files 149 Iterating foreach Collections: Iterators 157 Accessing Collections the Array Way: Indexers 160 Looping Around the Iterator Block 165 Chapter 8: Buying Generic 177 Writing a New Prescription: Generics 178 Classy Generics: Writing Your Own 179 Revising Generics 197 Chapter 9: Some Exceptional Exceptions 201 Using an Exceptional Error-Reporting Mechanism 202 Throwing Exceptions Yourself 207 Knowing What Exceptions are for 207 Can I Get an Exceptional Example? 208 Assigning Multiple catch Blocks 211 Planning Your Exception-Handling Strategy 214 Grabbing Your Last Chance to Catch an Exception 219 Throwing Expressions 220 Chapter 10: Creating Lists of Items with Enumerations 223 Seeing Enumerations in the Real World 224 Working with Enumerations 225 Creating Enumerated Flags 228 Defining Enumerated Switches 230 Book 2: Object-Oriented C# Programming 233 Chapter 1: Object-Oriented Programming — What’s it All About? 235 Object-Oriented Concept #1: Abstraction 235 Object-Oriented Concept #2: Classification 238 Why Classify? 238 Object-Oriented Concept #3: Usable Interfaces 239 Object-Oriented Concept #4: Access Control 240 How C# Supports Object-Oriented Concepts 241 Chapter 2: Showing Some Class 243 Defining a Class and an Object 244 Accessing the Members of an Object 246 An Object-Based Program Example 247 Discriminating between Objects 249 Can You Give Me References? 249 Classes That Contain Classes are the Happiest Classes in the World 252 Generating Static in Class Members 253 Defining const and readonly Data Members 255 Chapter 3: We Have Our Methods 257 Defining and Using a Method 257 A Method Example for Your Files 259 Having Arguments with Methods 267 Returning Values after Christmas 275 Returning Multiple Values Using Tuples 279 Chapter 4: Let Me Say This about this 283 Passing an Object to a Method 283 Defining Methods 285 Accessing the Current Object 290 Using Local Functions 298 Chapter 5: Holding a Class Responsible 301 Restricting Access to Class Members 301 Why You Should Worry about Access Control 306 Defining Class Properties 312 Getting Your Objects Off to a Good Start — Constructors 315 The C#-Provided Constructor 316 Replacing the Default Constructor 317 Using Expression-Bodied Members 324 Chapter 6: Inheritance: Is That All I Get? 329 Class Inheritance 330 Why You Need Inheritance 332 Inheriting from a BankAccount Class (a More Complex Example) 333 IS_A versus HAS_A — I’m So Confused_A 336 When to IS_A and When to HAS_A 340 Other Features That Support Inheritance 340 The object Class 344 Inheritance and the Constructor 345 The Updated BankAccount Class 350 Chapter 7: Poly-what-ism? 357 Overloading an Inherited Method 358 Polymorphism 366 The Class Business Card: ToString() 374 C# During Its Abstract Period 374 Sealing a Class 383 Chapter 8: Interfacing with the Interface 385 Introducing CAN_BE_USED_AS 385 Knowing What an Interface is 387 Using an Interface 391 Using the C# Predefined Interface Types 392 Looking at a Program That CAN_BE_USED_AS an Example 393 Unifying Class Hierarchies 401 Hiding Behind an Interface 403 Inheriting an Interface 406 Using Interfaces to Manage Change in Object-Oriented Programs 407 Chapter 9: Delegating Those Important Events 411 E.T., Phone Home — The Callback Problem 412 Defining a Delegate 412 Pass Me the Code, Please — Examples 414 A More Real-World Example 417 Shh! Keep it Quiet — Anonymous Methods 426 Stuff Happens — C# Events 427 Chapter 10: Can I Use Your Namespace in the Library? 435 Dividing a Single Program into Multiple Source Files 436 Dividing a Single Program into Multiple Assemblies 437 Putting Your Classes into Class Libraries 440 Going Beyond Public and Private: More Access Keywords 446 Putting Classes into Namespaces 452 Chapter 11: Improving Productivity with Named and Optional Parameters 459 Exploring Optional Parameters 460 Looking at Named Parameters 464 Dealing with Overload Resolution 465 Using Alternative Methods to Return Values 466 Chapter 12: Interacting with Structures 469 Comparing Structures to Classes 470 Creating Structures 472 Using Structures as Records 479 Book 3: Designing for C# 483 Chapter 1: Writing Secure Code 485 Designing Secure Software 486 Building Secure Windows Applications 488 Building Secure Web Forms Applications 493 Using System.Security 498 Chapter 2: Accessing Data 499 Getting to Know System.Data 500 How the Data Classes Fit into the Framework 502 Getting to Your Data 502 Using the System.Data Namespace 503 Chapter 3: Fishing the File Stream 521 Going Where the Fish are: The File Stream 521 StreamWriting for Old Walter 524 Pulling Them Out of the Stream: Using StreamReader 536 More Readers and Writers 540 Exploring More Streams than Lewis and Clark 542 Chapter 4: Accessing the Internet 543 Getting to Know System.Net 544 How Net Classes Fit into the Framework 545 Using the System.Net Namespace 547 Chapter 5: Creating Images 559 Getting to Know System.Drawing 560 How the Drawing Classes Fit into the Framework 563 Using the System.Drawing Namespace 564 Chapter 6: Programming Dynamically! 571 Shifting C# Toward Dynamic Typing 572 Employing Dynamic Programming Techniques 574 Putting Dynamic to Use 576 Running with the Dynamic Language Runtime 579 Book 4: A Tour of Visual Studio 583 Chapter 1: Getting Started with Visual Studio 585 Versioning the Versions 586 Installing Visual Studio 590 Breaking Down the Projects 592 Chapter 2: Using the Interface 597 Designing in the Designer 597 Paneling the Studio 605 Coding in the Code Editor 612 Using the Tools of the Trade 616 Using the Debugger as an Aid to Learning 618 Chapter 3: Customizing Visual Studio 623 Setting Options 624 Using Snippets 628 Hacking the Project Types 634 Book 5: Windows Development with WPF 641 Chapter 1: Introducing WPF 643 Understanding What WPF Can Do 643 Introducing XAML 645 Diving In! Creating Your First WPF Application 646 Chapter 2: Understanding the Basics of WPF 653 Using WPF to Lay Out Your Application 654 Arranging Elements with Layout Panels 655 Exploring Common XAML Controls 671 Chapter 3: Data Binding in WPF 681 Getting to Know Dependency Properties 681 Exploring the Binding Modes 682 Investigating the Binding Object 683 Editing, Validating, Converting, and Visualizing Your Data 687 Finding Out More about WPF Data Binding 704 Chapter 4: Practical WPF 705 Commanding Attention 705 Using Built-In Commands 708 Using Custom Commands 711 Using Routed Commands 716 Book 6: Web Development with ASP.NET 721 Chapter 1: Looking at How ASP.NET Works with C# 723 Breaking Down Web Applications 724 Questioning the Client 726 Dealing with Web Servers 730 Chapter 2: Building Web Applications 735 Working in Visual Studio 736 Developing with Style 749 Chapter 3: Controlling Your Development Experience 753 Showing Stuff to the User 754 Getting Some Input from the User 760 Data Binding 767 Styling Your Controls 775 Making Sure the Site is Accessible 777 Constructing User Controls 779 Chapter 4: Leveraging the .NET Framework 783 Surfing Web Streams 784 Securing ASP.NET 789 Managing Files 791 Baking Cookies 792 Tracing with TraceContext 796 Navigating with Site Maps 798 Index 801