beginning visual c 2010 wrox programmer to programmer download

... the class It is executed 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 ... 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

Ngày tải lên: 05/07/2014, 16:20

... and second are set to the current date In fact, only the less than operator and the greater than or equal to operator seem to be working correctly 5 Click Quit to return to the Visual ... 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, you’ll see how to accomplish ... first > second : False first >= second : True These are the correct results for identical dates 15 Click the icon for the second DateTimePicker control, and then click tomorrow’s date

Ngày tải lên: 05/07/2014, 16:20

... reference type variable Simply make the copy Because the variable is a reference type, you will have two references to the same object For example: Circle c = new Circle(42); Circle refc = c; ... differences: n You can’t declare a default constructor (a constructor with no parameters) for a struc-ture The following example would compile if Time were a class, but because Time is a structure, ... instances live on the stack or the heap? Structure instances are called values and live on the stack Class instances are called objects and live on the heap Can you declare a default constructor?

Ngày tải lên: 05/07/2014, 16:20

... a derived class to call the constructor for its base class as part of the initialization You can specify the base keyword to call a base class constructor when you define a constructor for an ... you don’t write any nondefault constructors), in which case forgetting to call the correct base class constructor results in a compile-time error con-Assigning Classes In previous examples in ... constructor Remember that all classes have at least one constructor (If you don’t provide one, the compiler generates a default constructor for you ) It is good practice for a constructor in

Ngày tải lên: 05/07/2014, 16:20

... of duplicate code. It makes sense to factor this code out into an abstract class called DrawingShape because this will ease maintenance of the Square and Circle classes in the future. Create ... 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 ... 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

Ngày tải lên: 05/07/2014, 16:20

... stops the clocks by using delegates Complete the World Clock application 1 Start Microsoft Visual Studio 2010 if it is not already running 2 Open the Clock project located in the \Microsoft ... interface by using explicit interface implementation in a class or structure In the class or structure that implements the interface, specify the interface, but do not specify the indexer accessibility. ... otherwise. 2. Locate the findNameClick method in the MainWindow.xaml.cs file. It is below the findPhoneClick method. The findName_Click method is called when the Search by Phone button is clicked. This

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 = ... Object x = ; Object y = ; ObjectComparer comparer = new ObjectComparer(); IComparer<Object> objectComparator = objectComparer; int result = objectComparator(x, y); Trang 9That’s the boring ... Enumerator by Using an Iterator As you can see, the process of making a collection enumerable can become complex and potentially error prone To make life easier, C# includes iterators that can automate

Ngày tải lên: 05/07/2014, 16:20

... exercise. The operator returns a new Complex object containing the results of this calculation. class Complex { public static Complex operator +(Complex lhs, Complex rhs) { return new Complex(lhs.Real ... 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 ... overloaded – operator to the Complex class. This operator follows the same form as the overloaded + operator. class Complex { public static Complex operator -(Complex lhs, Complex rhs)

Ngày tải lên: 05/07/2014, 16:20

... 493and to show you how easy it is to create shortcut menus dynamically, in the following cise you will create the shortcut menu by using code The best place to put this code is in the constructor ... (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 to ... Visual Studio 2010 As a further touch, you can add icons to menu items Many applications, including Visual Studio 2010, make use of icons in menus to provide an additional visual cue 16

Ngày tải lên: 05/07/2014, 16:20

... menu, 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 ... Main(string[] args) { SqlConnection dataConnection = new SqlConnection(); } SqlConnection is a subclass of an ADO NET class called Connection It is designed to handle connections to SQL Server databases ... to the code in the try block: This statement uses the connection string specified by the ConnectionString property of the dataConnection object to open a connection to the database If the connection

Ngày tải lên: 05/07/2014, 16:20

... class performs a similar role to a DataContext class in LINQ to SQL, and you can use it to connect to the database The NorthwindEntities class extends the ObjectContext class with logic to connect ... 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 ... 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

Ngày tải lên: 05/07/2014, 16:20

... // Create the cancellation token source and obtain a cancellation token CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken cancellationToken ... AddToAccumulator); Console.WriteLine("Accumulator is {0}", accumulator); } However, there is no guarantee that the tasks created to run the various invocations of the AddToAccumulator ... 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

... To cancel the wait operation, call the Cancel method of the CancellationTokenSource object For example: CancellationTokenSource cancellationTokenSource = new CancellationTokenSource(); CancellationToken ... 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 ... resource readerWriterLock.ExitWriteLock(); }); Cancel a blocking wait operation Create a cancellation token from a CancellationTokenSource object, and specify this token as a parameter to

Ngày tải lên: 05/07/2014, 16:20

... program into Script Editor, you click the Run button. Clicking that button initiates the following actions: ❑ Analyzes your AppleScript code to make sure it conforms to the rules for writing commands and ... it forces you to correct any errors before you can save your program to a file. Later, if you want to make changes to your program, you can double-click the file name in the Finder to launch Script ... into another format that is more optimal for execution ❑ Indents your AppleScript code according to certain stylistic rules ❑ Changes the color of your words, operators, and expressions according...

Ngày tải lên: 31/05/2014, 23:58

... the \d Metacharacter 645 Character Classes 647 The POSIX Character Classes in the java.util.regex Package 651 Unicode Character Classes and Character Blocks 652 Using Escaped Characters 653 Using ... Object 490 Using the Match Object and Matches Collection 492 Using the Match.Success Property and Match.NextMatch Method 495 The GroupCollection and Group Classes 497 The CaptureCollection and Capture ... inside a character class, when it isn’t the first character the dash indicates a range. For exam- ple, to specify a character class that has all lower- and uppercase alphabetic characters, you could...

Ngày tải lên: 01/06/2014, 00:37

... 905 Hosting 906 WCF Programming 906 The WCF Test Client 914 Defining WCF Service Contracts 917 Data Contracts 918 Service Contracts 918 Operation Contracts 919 Message Contracts 920 Fault Contracts 920 Self-Hosted ... Services 637 A Hotel Travel Agency Application Scenario 638 A Book Distributor Application Scenario 638 Client Application Types 639 Application Architecture 639 Web Services Architecture 640 Calling ... point concerning this process. The C# code that compiles into CIL in step 2 needn’t be contained in a single file. It’s possible to split application code across multiple source code files, which...

Ngày tải lên: 24/01/2014, 17:57

... System.Diagnostics; namespace Apress.VisualCSharpRecipes.Chapter01 { class Recipe01_06 { [Conditional("DEBUG")] public static void DumpState() { Visual C# 2010 Recipes: A ... Public key is 07020000002400005253413200040000010001002b4ef 3c2 bbd6478802b64d0dd3f2e 7c6 5ee 6478802b63cb894a782f3a1adbb46d3ee5ec5577e7dccc818937e964cbe99 7c1 207 6c1 9f2d7 ad179f15f7dccca 6c6 b72a ... Database Access 423 9-1. Connect to a Database 425 9-2. Use Connection Pooling 428 9-3. Create a Database Connection String Programmatically 431 9-4. Store a Database Connection String Securely...

Ngày tải lên: 24/01/2014, 19:46