C#

Facebook Twitter

Icon Archive. Threading in C# - Free E-book. Threading in C# Joseph Albahari Last updated: 2011-4-27 Translations: Chinese | Czech | Persian | Russian | Japanese Download PDF Part 1: Getting Started C# supports parallel execution of code through multithreading.

Threading in C# - Free E-book

A C# client program (Console, WPF, or Windows Forms) starts in a single thread created automatically by the CLR and operating system (the “main” thread), and is made multithreaded by creating additional threads. All examples assume the following namespaces are imported: using System; using System.Threading; class ThreadTest{ static void Main() { Thread t = new Thread (WriteY); t.Start(); for (int i = 0; i < 1000; i++) Console.Write ("x"); } static void WriteY() { for (int i = 0; i < 1000; i++) Console.Write ("y"); }} The main thread creates a new thread t on which it runs a method that repeatedly prints the character “y”. Once started, a thread’s IsAlive property returns true, until the point where the thread ends.

Done static void Go(){ if (! Done Done (usually!) Join and Sleep. C# Tutorial - Using The ThreadPool. A thread pool takes away all the need to manage your threads - all you have to do is essentially say "hey!

C# Tutorial - Using The ThreadPool

Someone should go do this work! ", and a thread in the process' thread pool will pick up the task and go execute it. And that is all there is to it. Granted, you still have to keep threads from stepping on each other's toes, and you probably care about when these 'work items' are completed - but it is at least a really easy way to queue up a work item. In fact, working with the ThreadPool is so easy, I'm going to throw all the code at you at once. We have three arrays at the top of the program: one for input to the work items (inputArray), one for the results (resultArray), and one for the ManualResetEvents (resetEvents). So we initialize these arrays, and then we get to a for loop, which is where we will be pushing out these work items. So what are we queuing here? So what are we doing in this DoWork function?

Pretty simple, eh? That's it for this intro to thread pools in C#. Www.dotnet-france.com/Documents/WCF/Hebergement et configuration de services WCF.pdf. .NET et les threads. Hosting EXE Applications in a WinForm project. Download demo project and source- 15.6 Kb Introduction Though not a common task, recently I needed to take an existing executable application and embed it into an application I was building.

Hosting EXE Applications in a WinForm project

Oddly enough, I did not need any interaction between my application and the existing EXE. As it ends up, this is not a difficult thing to do. To make it even easier, I created a custom C# control that allows you to specify the name of an executable you want embedded into your application. How does it work In design time, the user can specify the name of the executable to embed. Process p = null; try { p = System.Diagnostics.Process.Start(this.exeName); p.WaitForInputIdle(); appWin = p.MainWindowHandle; } catch (Exception ex) { MessageBox.Show(this, ex.Message, "Error"); } After launching, the code must then set the parent of the executable's main window to the control handle. Any time the control is resized, it must also resize the executable window.

History. PDFsharp. Preprocessor Directive. Conditionally includes source code at compile-time.

Preprocessor Directive

#IF nExpression1 | lExpression1 Commands [#ELIF nExpression2 | #ELIF lExpression2 Commands... #ELIF nExpressionN | #ELIF lExpressionN Commands] [#ELSE Commands] #ENDIF Parameters #IF nExpression1| lExpression1Commands nExpression1 specifies the numeric expression that is evaluated. If the expression is nonzero, the commands immediately following #IF are included in the compiled code. lExpression1 specifies the logical expression that is evaluated. If the expression is True (.T.), the commands immediately following #IF are included in the compiled code. #ELIF nExpression2| #ELIF lExpression2Commands #ELIF nExpressionN| #ELIF lExpressionNCommands If nExpression1 is 0 or lExpression1 is False (.F.), the #ELIF directives are evaluated. If nExpression2 is 0 or lExpression2 is False (.F.), the commands following #ELIF are not included in the compiled code.

#ELSE Commands Indicates the end of the #IF statement. #IF ... When the #IF ... RegExp ASP.NET. C# Tutorial - Serialize Objects to a File. While storing information in memory is great, there comes a time your users will have to shut your application down.

C# Tutorial - Serialize Objects to a File

This means (probably) that you will need to write information to a file at some point, because you will want to store whatever data was in memory. Today, we are going to take a look at a feature built into .NET called Serialization that makes writing and reading data structures to and from a file extremely easy. For this example, let's say I want to create a program that keeps track of all the cars my friends own. I'm going to create two objects to achieve this: Car and Owner. The Car object will store the make, model, and year of the car. //information about the carpublic class Car{ private string make; private string model; private int year; private Owner owner; public Car() { }} //information about the car's ownerpublic class Owner{ private string firstName; private string lastName; public Owner() { }} List<Car> cars = new List<Car>();

Serialize List Tutorial. A List can be serialized to the disk.

Serialize List Tutorial

We want to serialize (to a file) a List of objects. The next time the program runs, we get this List straight from the disk. We see an example of BinaryFormatter and its Serialize methods. List Example This is the first part of the code example. Program that describes serializable type: C# using System; using System.Collections.Generic; using System.IO; using System.Runtime.Serialization.Formatters.Binary; [Serializable()] public class Lizard { public string Type { get; set; } // String property for Lizard object public int Number { get; set; } // Number of lizards public bool Healthy { get; set; } // Whether lizard is healthy public Lizard(string t, int n, bool h) { Type = t; Number = n; Healthy = h; } } We see a class called Lizard, and it has three automatic properties. The Serializable attribute is specified right before the class definition. Example 2 The second part of this tutorial is the Main method in your C# console program.

File.Open Examples. AreaProg. Samples for Parallel Programming with the .NET Framework. Les meilleurs outils pour .NET. .NET Framework 4. The .NET Framework is a development platform for building apps for Windows, Windows Phone, Windows Server, and Microsoft Azure.

.NET Framework 4

It consists of the common language runtime (CLR) and the .NET Framework class library, which includes classes, interfaces, and value types that support an extensive range of technologies. The .NET Framework provides a managed execution environment, simplified development and deployment, and integration with a variety of programming languages, including Visual Basic and Visual C#. The documentation for the .NET Framework includes an extensive class library reference, conceptual overviews, step-by-step procedures, and information about samples, compilers, and command-line tools. To locate the information that interests you, see the following list of main topic areas. Provides a comprehensive overview of the .NET Framework and links to additional resources. Describes key new features and changes in the latest versions of the .NET Framework. Tray Icon.

There are many cases when it's advantageous to place an application's icon in the System Tray.

Tray Icon

For example, firewall/antivirus and instant messaging applications do this so as to run in the background and still be accessible to the user without crowding up the task bar. In this week's installment of my .NET Tips and Techniques series, I'll show you the steps involved in specifying that an application is to be minimized to the Tray, how to allow the user to restore the application by double-clicking the icon and how to create and respond to a System Tray icon's context menu. To get started, open an existing C# Windows form (or create a new one).Open the Visual Studio Toolbox.Drag a NotifyIcon control onto the form. The control will named notifyIcon1 by default and placed below the form because it has no visual representation on the form itself.Set the NotifyIcon control's Text property to the name you want to appear when the user pauses the mouse over the application's icon.

Figure 1. BackgroundWorker. Pour créer l'interface utilisateur Pour créer un composant BackgroundWorker et s'abonner à ses événements Pour définir la méthode qui s'exécutera sur un thread distinct public class Words { // Object to store the current state, for passing to the caller. public class CurrentState { public int LinesCounted; public int WordsMatched; } public string SourceFile; public string CompareString; private int WordCount; private int LinesCounted; public void CountWords( System.ComponentModel.BackgroundWorker worker, System.ComponentModel.DoWorkEventArgs e) { // Initialize the variables.

BackgroundWorker

Pour gérer les événements à partir du thread Pour démarrer et appeler un nouveau thread qui exécute la méthode WordCount private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) { // This event handler is where the actual work is done. // This method runs on the background thread. // Get the BackgroundWorker object that raised this event. Pour implémenter un bouton Cancel qui arrête le thread.