beginning visual c 2010 wrox pdf download

... project Click OK Create a new console application using Visual C# 2010 Express On the File menu, click New Project to open the New Project dialog box For the template, select Console Application ... Application Choose a name for the project Click OK Create a new graphical application using Visual Studio 2010 Standard Create a new graphical application using Visual C# 2010 Express ... when an instance of the class is created and can contain code to initialize the instance You will learn about constructors in Chapter 7 ) In fact, the application contains a lot more code, but most

Ngày tải lên: 05/07/2014, 16:20

... focus calcula-on how to solve them calcula-one piece at a time You also need to be able to write methods that selectively perform different actions depending on the circumstances In this chapter, ... Microsoft Visual Studio 2010 if it is not already running 2 Open the Selection project, located in the \Microsoft Press\Visual CSharp Step By Step \Chapter 4\Selection folder in your Documents ... menu, click Start Without Debugging Visual Studio 2010 builds and runs the application The form contains two DateTimePicker controls called first and second These controls display a calendar

Ngày tải lên: 05/07/2014, 16:20

... two references to the same object For example: Circle c = new Circle(42); Circle refc = c; Declare a variable that can hold a value type or the null value Declare the variable using the ? ... A structure is a value type A class is a reference type Do instances live on the stack or the heap? Structure instances are called values and live on the stack Class instances are called ... classes and structures concerning inheritance These differences are covered in Chapter 12 Declaring Structure Variables After you have defined a structure type, you can use it in exactly the same

Ngày tải lên: 05/07/2014, 16:20

... constructor (If you don’t provide one, the compiler generates a default constructor for you ) It is good practice for a constructor in a derived class to call the constructor for its base class ... that the compiler generates only a default structor if you don’t write any nondefault constructors), in which case forgetting to call the correct base class constructor results in a compile-time ... ” Trang 23Understanding protected AccessThe public and private access keywords create two extremes of accessibility: public fields and methods of a class are accessible to everyone, whereas

Ngày tải lên: 05/07/2014, 16:20

... own code to instantiate the shape object. (Remember that the Square class creates a Rectangle object and the Circle class creates an Ellipse object.) abstract class DrawingShape { public ... class, remove the definitions of the sideLength, rect, locX, and locY fields. 3. Replace the existing constructor with the following code, which calls the constructor in the base class. Notice ... { public void SetLocation(int xCoord, int yCoord) { this.locX = xCoord; this.locY = yCoord; } 274 Part II Understanding the C# Language public void SetColor(Color color) {

Ngày tải lên: 05/07/2014, 16:20

... files, including AmericanClock cs, EuropeanClock cs, JapaneseClock cs, and LocalClock cs These files contain the classes that implement the different clocks You don’t need to be concerned with ... localClock = new LocalClock(localTimeDisplay); londonClock = new EuropeanClock(londonTimeDisplay); newYorkClock = new AmericanClock(newYorkTimeDisplay); tokyoClock = new JapaneseClock(tokyoTimeDisplay); ... localClock = null; private EuropeanClock londonClock = null; private AmericanClock newYorkClock = null; private JapaneseClock tokyoClock = null; public ClockWindow() { InitializeComponent();

Ngày tải lên: 05/07/2014, 16:20

... y.GetHashCode(); You can create an ObjectComparer object and call the Compare method through the IComparer<Object> interface to compare two objects, like this: Object x = ; Object y = ... then click Set as Startup Project 3 On the Project menu, click Add Reference In the Add Reference dialog box, click the Projects tab Select the BinaryTree project, and then click OK ... IEnumerable<T> interface that you will meet in Chapter 19, “Enumerating Collections ” Trang 8Chapter 18 Introducing Generics 377Contravariant InterfacesContravariance is the corollary of covariance It enables

Ngày tải lên: 05/07/2014, 16:20

... di) ((( a * c + b * d) / ( c * c + d * d)) + ( b * c - a * d) / ( c * c + d * d))i) Create the Complex class, and implement the arithmetic operators 1 Start Microsoft Visual Studio 2010 if it ... implicit conversion operator to the Complex class This operator converts from an int to a Complex object by returning a new instance of the Complex class by using the constructor you created ... and (c + di) Operation Calculation (a + bi) + (c + di) ((a + c) + (b + d)i) (a + bi) – (c + di) ((a – c) + (b – d)i) (a + bi) * (c + di) (( a * c – b * d) + (b * c + a * d)i) (a + bi) / (c +

Ngày tải lên: 05/07/2014, 16:20

... list box, click some of the methods to select the corresponding check box If you click a method a second time, it clears the corresponding check box, just as you would expect 16 Click the ... right-click the Last Name text box On the shortcut menu, click the Clear Name command and again verify that both text boxes are cleared 9 Right-click any controls except the Member Since control ... as (Collection) A Menu control contains Trang 11a collection of MenuItem elements Currently, the menu has no menu items, so the collection is empty Click the ellipses button (…) adjacent

Ngày tải lên: 05/07/2014, 16:20

... dataConnection object to open a connection to the database If the connection is successful, you can use the dataConnection object to perform database commands and queries If the connection ... click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator If you are logged in using an account that has administrator rights, in the User Account ... use a SqlConnectionStringBuilder object The SqlConnectionStringBuilder class exposes properties for each of the elements of a con- nection string You can then read a complete connection string

Ngày tải lên: 05/07/2014, 16:20

... two users changing the same data is small (hence the term optimistic concurrency ) The opposite of optimistic concurrency is pessimistic concurrency In this scheme, all data is locked in the ... pessimistic concurrency Instead, it provides a middle ground Each item in an EntityObject class has a property called Concurrency Mode By default, the Concurrency Mode is set to None, but you can change ... have changed the data between the calls to Refresh and SaveChanges in the OptimisticConcurrencyException exception handler In a commercial application, you should be prepared to catch this exception

Ngày tải lên: 05/07/2014, 16:20

... { // Create the cancellation token source and obtain a cancellation token CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken ... The Mechanics of Cooperative Cancellation Cooperative cancellation is based on the notion of a cancellation token A cancellation token is a structure that represents a request to cancel one ... is scalable across any number of tasks You can start multiple tasks and pass the same CancellationToken object to each of them If you call Cancel on the CancellationTokenSource object, each

Ngày tải lên: 05/07/2014, 16:20

... instantiate a BlockingCollection<T> object without specifying a collec-tion class In this case, the BlockingColleccollec-tion<T> object creates a ConcurrentQueue<T> object internally ... the CancellationTokenSource object For example: CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken = cancellationTokenSource.Token; ... underlying collection to 1000 class MyCollection<T> : IProducerConsumerCollection<T> // Create an instance of MyCollection<T>, // and wrap it in a BlockingCollection<T> object

Ngày tải lên: 05/07/2014, 16:20

... Black.Hole method, 223 BlockingCollection<T> class, 669 BlockingCollection<T> objects, 670blocking mechanisms of synchronization primitives, 663–665 blocks of statements, 78–79braces ... class scope, defining, 54–55class types, copying, 151–156 clear_Click method, 471 clearName_Click method, 492 Click event handlers, 471–474 for menu items, 485–487 Click events, 25, 345 Clone ... to the dictionary in the CustomerDB object The code creates another Customer object for a customer called Sid, and adds this cus- tomer to the CustomerDB object as well Finally, the code displays

Ngày tải lên: 05/07/2014, 16:20

... 341Placing friend Function Definitions Inside the Class 356 Trang 25Chapter 9: Class Inheritance and Virtual Functions 473Visibility Specifiers for Classes and Interfaces 531Access Specifiers for Class ... instance Each of the chapters that cover the C++ language (Chapters 2 to 10) first discusses particu-lar aspects of the capabilities of ISO/ANSI C++ followed by the new features introduced by C++/CLI ... that teachesyou how to create, customize, and use Windows Forms controls in an application You gainpractical experience by building an application incrementally throughout the chapter ❑ Chapter

Ngày tải lên: 06/07/2014, 02:20

... with the extension cppcontainexecutable C++ source code, and the hfiles contain C++ code consisting of definitions that are used by the executable code The icofiles contain icons The files are ... before your code is compiled into object code,and preprocessor directives generally act on your source code in some way before it is compiled Theyall start with the #character I’ll be introducing other ... represent fundamental data in your computer, essentially ical values, which also includes characters because a character is represented by a numerical charactercode You have already seen the keyword

Ngày tải lên: 06/07/2014, 02:20

... reference class types in Chapter 7 fea-Next, you’ll try a CLR console program Try It Out A Fruity CLR Console Program Create a new project and select the project type as CLRand the template as CLR Console ... that calculates the price of a carpet to demonstrate output in a CLR console program:// Ex2_13.cpp : main project file // Calculating the price of a carpet #include “stdafx.h” using namespace System; ... double quotes to the command line The Lthat precedes thestring indicates that it is a wide-character string where each character occupies two bytes The Write()function in the Consoleclass is essentially

Ngày tải lên: 06/07/2014, 02:20

... refer-allocrefer-ated on the CLR herefer-ap, which includes all CLR reference types, cannot be declared at global scope Declaring Tracking Handles You specify a handle for a type by placing the ... ‘gc’ prefix is a cue to the fact that you are allocating memory on the garbage-collected heap and not the native C++ heap where all the housekeeping is down to you collec-The CLR garbage collector ... lucky star is “; int dice = 0; cout << endl << “ Pick a lucky star!” << “ Enter a number between 1 and 6: “; cin >> dice; cout << endl; switch(dice){ case 1: cout

Ngày tải lên: 06/07/2014, 02:20

... 8-bit characters, but the compiler ensures it is converted to awide-character string You can access individual characters in a string by using a subscript just like an array, and the first acter ... http://www.simpopdf.com Trang 20array<wchar_t>^ indicators = gcnew array<wchar_t>(sentence->Length){L’ ‘};int index = 0; // Index of character foundint count = 0; // Count of punctuation characterswhile((index ... countcontains the number of punctua-tion characters that were found, and indicatorswill contain ‘^’characters at the positions in sentencewhere such characters were found.The output is produced

Ngày tải lên: 12/08/2014, 10:21

... “Number of objects (through class) = “ Default constructor called Default constructor called Default constructor called Default constructor called Default constructor called Static data members ... two calls of the constructor CBox(), once for each object declared.The constructor that you have supplied in the class definition is automatically called when a CBoxobject is declared, so both CBoxobjects ... way, and of course there is — it’s known as the class constructor. What Is a Constructor? A class constructor is a special function in a class which is called when a new object of the class is ated

Ngày tải lên: 12/08/2014, 10:21