C# Corner

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  • Binary Search Using ArrayList Jan 10, 2000. The ArrayList class provide binary search algorithm and more...
  • Adding Images to ToolBar ButtonJan 29, 2000. An article shows you how to add images and tooltips to the toolbar buttons.
  • Using DataList Control in Web FormsJan 12, 2001. This example uses a DataList which contains LinkButton controls, which allows a user to navigate through a list of data.
  • Using ListViews in C#Jan 18, 2001. As a Visual C++ user for 10 years I can say that Microsoft deserves praise for their new ListView class. The MFC ListView class was, well, unpleasant to use. C# makes life a bit easier with a richer property and method set for ListViews. Also, you can now, set the ListView to select an entire row in report mode, something that in Visual C++ you had to write a whole custom ListView control to do. Note also the nice grid lines.
  • ADO.NET Database ExplorerJan 20, 2001. The sample connects to the SQL server database and shows you a tree view like interface of all the tables.
  • Horoscope Web ServiceFeb 08, 2001. An article talks about web services and how to develop them using .NET.
  • Making UI more responsive using ThreadingFeb 12, 2001. This example shows how threads can help us to make User interface more responsive when we have some background jobs.
  • Adding Items to a ListBoxMar 06, 2001. Sample code shows you how to add items to a list box.
  • Testing .Net Components Using NUnitMar 08, 2001. Write unit tests before starting development". Writing test allows me to see immediate results of every code change.
  • Programming in ADO.NETMar 19, 2001. A simple example shows you how to read a database table in a dataset and display in a list view control.
  • FTP Explorer in C#May 21, 2001. I have developed a GUI based FTP client application. This takes connection information and populates folder and files in treeview and listview respectively.
  • Data Structure Sample ExampleJun 04, 2001. Source code for Data Structure implemetation of Stack, Queue, Doubly linked list and more..
  • .NET Brings The Fun Back to ProgrammingJul 11, 2001. Today, we are all comfortable sitting in front of our high powered computers running graphical user interfaces and compiling code in sophisticated development environments.
  • Sending Mail in ASP.NET using C#Jul 13, 2001. This article contains the listing for a simple web form to send email.
  • Service ExplorerAug 06, 2001. This program manages services running in your computer. You can use the GetServices method on the ServiceController class to retrieve a list of the services on a particular computer.
  • C# and APIAug 08, 2001. API (Application Programming Interface) is a set of commands, which interfaces the programs with the processors.
  • Messaging between Threads using Message LoopAug 20, 2001. MessageLoopLib is a stripped down version of a complete, threading communication subsystem Ive written. This implementation is a single thread created in the GUI constructor. Ive dropped all thread management and have had to change some of the message code to accommodate this.
  • Interface Components Interoperability Aug 27, 2001. The fundamental concept behind both COM and DCOM is the interface. An interface is an agreement between a client and an object about how they will communicate with each other.
  • Multiple Inheritance in C#Aug 29, 2001. Can you inherit from multiple classes in C#? Simply put, this cannot be done. However there are ways around it. From a design perspective you must ask yourself, will a Class fully represent an object?
  • Simple Windows Forms Events and InterfacesSep 03, 2001. This article contains a c# code which makes use of the concepts of Events and Interfaces together.
  • Enumerators in C#Sep 18, 2001. Sample example shows you how to use enumerators in C#.
  • IComparable: Under the HoodSep 21, 2001. We now calling Array.Sort() on C# Types such as int, char, string will automatically do sorting based on that type.
  • Abstract Classes And MethodsOct 08, 2001. This is a detailed analysis of Abstract classes and methods in C# with some concrete examples.
  • Oracle Database ViewerOct 17, 2001. This is a GUI based application which connects to an Oracle database depending upon the DSN, username and password that you provide. It then shows the list of tables on the left hand side in the form of a treeview.
  • Working with Namespaces in C#Nov 07, 2001. In C#, namespaces are used to logically arrange classes, structs, interfaces, enums and delegates. The namespaces in C# can be nested. That means one namespace can contain other namespaces also.
  • Using Interfaces in .NET RemotingNov 30, 2001. In this article, we will create a remote object that will return rows from a database table. For the sake of simplicity I have used the NorthWind database that is packed with the installation of the Microsoft SQL Server.
  • Abstract Factory Patterns in C#Dec 10, 2001. The ABSTRACT FACTORY PATTERN comes under the classification of Creational Patterns. The Abstract Factory provides an interface to create and return one of several families of related objects.
  • Returning an Array Listing using Remote Procedure CallDec 26, 2001. In this article we will create a Web Service that will return an ArrayList of students.
  • Buliding Text to Speech Applications using SAPI 5.1 and C#Jan 03, 2002. In this article,The Speech application programming interface (SAPI) considerably decreases the code necessary for an application to use speech recognition and text-to-speech, making speech technology more handy and robust for broad range of applications
  • Adapter Pattern in C#Jan 03, 2002. The Gang Of Four (GoF) defined the Adaptor pattern as follows in their most famous book "Design Patterns" Gamma et al. Adapter lets classes work together that couldn't otherwise because of incompatible interfaces."
  • Using MS Agent in C# - Part-IIIJan 09, 2002. In this article, I will show you how to write a program which lists all the animations of the loaded characters which speak to us using synthesized speech, recorded audio, or text in a cartoon word balloon.
  • FTP Explorer in C#(Beta 2)Jan 10, 2002. FTP Explorer is a MDI application that can explore FTP server. This application takes FTP connection information and populates folder and files in treeview and listview respectively.
  • Developing MDI Applications in C#Jan 16, 2002. In this article, I'll explain how to write MDI applications using C# and Windows Forms.
  • Yahtzee Program Using C#: Part IIJan 31, 2002. This is an update of the Yahtzee program for VS 2005. Included in this version is a Game Reset and a High Score Tracker. The Top Ten High Scores are tracked using an Array with sortable components. In this article we will talk about the IComparable interface used to make an object stored in an array sortable.
  • Owner Draw ListBox Control in Windows Forms and C#Feb 08, 2002. In this article, we will see how to write owner drawn ListBox control using C# and Windows Forms.
  • Creational Pattern - Abstract FactoryFeb 11, 2002. An abstract factory provides an interface for creating families of related objects without specifying their concrete classes. Sometimes one wants to construct an instance of one of a suite of classes, deciding between the classes at the time of instantiation.
  • Implementing IEnumerator and IEnumerable Interfaces using Inner Class in C# Feb 28, 2002. .NET framework provides IEnumerable and IEnumerator interfaces to implement collection like behavior to user defined classes.
  • Sorting Object Using IComparer and IComparable Interfaces Mar 01, 2002. The System.Collections namespace contains interfaces and classes that define various...
  • Command Patterns in C#Mar 04, 2002. Command pattern encapsulates a request as an object and gives it a known public interface. Command Pattern ensures that every object receives its own commands and provides a decoupling between sender and receiver.
  • .NET Remoting: The Interface ApproachMar 26, 2002. .NET Remoting provides a powerful and high performance way of working with remote objects. Architecturally, .NET Remote objects are a perfect fit for accessing resources across the network without the overhead posed by SOAP based Web services. .NET Remoting is easier to use than Java's RMI, but definitely more difficult than creating a WebService. In this article, we will create a remote object, and access this object using the Interface.
  • .NET Remoting: The Interface ApproachMar 26, 2002. In this article, we will create a remote object, and access this object using the Interface. The object returns rows from a database table.
  • Simple NSLookUp Implementation in C#Apr 01, 2002. This is code implementation for simple nslookup. As you can see from the code listing, I've used classes defined in the System.Net namespace.
  • Poorman's Installation program in C# and .NETApr 08, 2002. Installation programs can be quite expensive these days. Although programs such as Wise and InstallShield have fantastic features and are fairly comprehensive, sometimes you just want to do the easy installation of copying and pasting files into a directory and perhaps placing a shortcut in the start menu.
  • .NET Commander ver Alpha 1.0.0Apr 15, 2002. The .NET Commander is a Windows application written in C#. This application is a double panel file manager with an interface very similar to the popular Windows Commander.
  • Using Microsoft Agent with C#May 04, 2002. This article explains how to include MS Agent into an simple Windows Form based application using C#.
  • Nemesis-7rc1 (Codename Deviate)May 13, 2002. Nemesis-7 is a full-screen 2D shoot’em up that makes use of the DirectInput, DirectSound and DirectDraw interfaces from DirectX. The player controls a spaceship which he uses to duel the computer opponent. I implemented some artificial intelligence to make the CPU play more human.
  • Mastermind Game with Drag and Drop FunctionalityMay 15, 2002. There as nice article some time ago on this site for creating mastermind game by Mike Gold. I am rewriting complete game from scratch to implement Drag and Drop feature and presentable User interface.
  • Check Your Mobile Device CapabilitiesMay 16, 2002. This sample is a utility to determine the capabilities of a Mobile Device. The MobileCapabilities class available in the Mobile Internet Toolkit provides a list of useful information on the client device.
  • Assembly Browser: Browsing a .NET AssemblyMay 17, 2002. This program lets you browse an assembly and lists the methods and the parameter name and parameter type for each assembly.
  • A Simple Contacts List for Pocket PCMay 19, 2002. I have implemented a simple contact list application that is capable of adding and viewing contact details.
  • Comparison of C# with Java: A Developer PerspectiveMay 29, 2002. The .NET is a language and operating system (on Windows as of now) independent platform pretty similar to Java.
  • Nemesis-7rc1 ( Codename Deviate)Jun 13, 2002. Nemesis-7 is a full-screen 2D shoot’em up that makes use of the DirectInput, DirectSound and DirectDraw interfaces from DirectX. The player controls a spaceship which he uses to duel the computer opponent. I implemented some artificial intelligence to make the CPU play more human.
  • Building Application Frameworks with C#Jun 28, 2002. Frameworks are generalized and customized application, which can be built upon into a complete and fully functional software programs.
  • Editable ListBox ControlJul 01, 2002. A ListBox is a read-only list of items. But let us suppose your application needs to edit an item in a listbox at runtime.
  • Intellisense: An Example of How to Make ItJul 01, 2002. Auto completing is one way to offer a productive and programmer friendly user interface to programmers and Intellisense feature of Visual Studio .NET is one of them.
  • Create FTP and Web IIS Virtual Directory using C#Jul 03, 2002. In this example we will create a Windows Form Project that will create new FTP and Web IIS Virtual Directories from code based on the name and path specified by the user.
  • Writing a Generic Data Access ComponentJul 17, 2002. OK, I've received couple of emails people asking me how can they use a common data provider to access various types of data sources without loosing the power and flexibility of native data provider libraries.
  • Windows Forms Printer Selection ListJul 30, 2002. In this example we will create a sample windows form containing a combo box which will list the printers installed on the machine on which the program runs. The default printer for the machine is set as the default selection in the combo box.
  • Using Active DirectoryJul 31, 2002. This sample code can sense current context in Active Directory, checks for the existence of attributes, provides a list of all the attributes in Active Directory and can add a user to Active Directory.
  • Changing User Information using Active DirectoryAug 14, 2002. If your company is one of the lucky? Ones to implement Windows 2000 Active Directory you may have been looking for a way to populate it with data. Perhaps adding people’s details from a file directly into the active directory.
  • Listing all Computer in Active DirectoryAug 27, 2002. This application does one simple task. On any network where Microsoft Active Directory is used it will list all computers on the network. I faced this problem when I wanted to document all of the computers on the network using WMI .
  • XML News Feeds from Harrison LogicSep 04, 2002. This application provides a compilation of news headlines from many sources, using the MoreOver.com's XML service.
  • Calling Procedural COBOL from C#Sep 05, 2002. In a previous article we discussed how to call procedural based COBOL programs from VB.NET.
  • Customize User Interfaces and Pass User Input to Installer ClassesOct 19, 2002. In this article I am going to demonstrate how to customize your MSI install to prompt the user for some information and then pass this information to an installer class. This can be useful when needing to do something during an install based on the user input.
  • Customize User Interfaces and Pass User Input to Installer ClassesOct 29, 2002. In this article I am going to demonstrate how to customize your MSI install to prompt the user for some information and then pass this information to an installer class. This can be useful when needing to do something during an install based on the user input.
  • Aspect Oriented ProgrammingNov 20, 2002. In this article we are going to look at some features of .Net framework, which enable us to build highly configurable applications.
  • The "Using" Statement in C#Dec 11, 2002. The .Net Framework provides resource management for managed objects through the garbage collector - You do not have to explicitly allocate and release memory for managed objects.
  • Synchronized Threading in .NETDec 11, 2002. Threads are a powerful abstraction for allowing parallelized operations: graphical updates can happen while another thread is performing computations, two threads can handle two simultaneous network requests from a single process, and the list goes on. Since threads are pretty simple to understand, conceptually, but, practically, they are a cause for programmatic headaches, I decided to write this program to describe how to make use of threads.
  • Events in C# Made Easy - Lesson1Jan 02, 2003. Events are useful for updating a user interface with changed data, or causing a piece of code to run after another piece of code has completed. .NET has brought us a powerful model for programming events.
  • Abstract Factory - Creational Design PatternJan 03, 2003. Abstract Factory simplifies the creation of different families of related or dependent objects. It provides interfaces for this purpose and does not specify the concrete classes.
  • Distributed Cross Platform Applications, the Easy Way Mar 07, 2003. There are many ways of transferring data from one process to another. All those methods have some advantages, but also some drawbacks.
  • Querying COM+ through Web ServicesMar 12, 2003. The most COM+ common administrative tasks (creating a COM+ application, installing/deleting a component, setting a component attribute) can be accomplished manually with the Component Services administrative tool from Management Console.
  • Writing an ActiveX Control in .NETMar 12, 2003. In this example, I will walk you through creating an ActiveX control that will show a simple user interface and accept input from a web page.
  • Remote Objects: Part IIMar 12, 2003. This article shows how to create a remote server and MDI window Remote Client using remote object. The remote server can be used as Auction Server and Real Time Data and News Server.
  • Remote Objects in C#: Part IIMar 12, 2003. This article shows how to create a remote server and MDI window Remote Client using remote object.
  • Degenerated Observer and Asynchronous Web ServicesMar 20, 2003. In this article I will revisit Observer pattern and try to show how it can be modified and used to make web services to dispatch and receive notifications.
  • Accessing COBOL Properties with C#Apr 02, 2003. This article will review a new option for exposing those assets via the use of Properties.
  • Listing Active Directory UsersApr 06, 2003. The attached source code shows you how to list an active directory users in .NET using C#.
  • Basics of Extending Your Working Environment in Visual StudioApr 10, 2003. All of us have used Macros in Microsoft Office and Add-ins in Visual Studio 6 and I am very sure all of us have been impressed as well by their power to control their own working environment.
  • Random Starcraft Map ChooserMay 12, 2003. I created a simple program that searches through Starcraft's maps directory tree and shows a list of all the maps that are searches by Starcraft's maps directory.
  • Sorted List and Web Server ControlJun 09, 2003. This article shows you to take advantage of SortedList in data binding with Web Server controls.
  • Part I: Simple Color Syntax Code Editor for PHP written in C# and .NETJun 18, 2003. The Application is a simple Windows Form program that allows you to open and save the text files edited in the rich edit control, as well as print them out. The program takes advantage of a “syntax” text file for PHP which lists the functions and keywords contained in the PHP language.
  • Changing the default limit of 25 threads of ThreadPool ClassJun 19, 2003. The Threadpool is useful for managing threads that are usually in a wait state and that take only a short amount of time to do their work. If still you would like to change the default limit of 25 threads then here you go.
  • HTTP Handlers for Images in ASP.NETJun 23, 2003. Have you ever thought of streaming thumbnails just by passing query string indicating width or height of thumbnail you need, and most importantly passing those to image itself?
  • Using Linked List in C#Jun 25, 2003. What we going to make is a linked list. Yeah I know there is a class which does the same as a linked list called ArrayList, but we (as a diehard C# programmer) want absolute control and knowledge of what we use.
  • Handling Null Values in DataGridJul 17, 2003. This article shows you how to handle no data found or null values in an ASP.NET DataGrid control.
  • ColorFul Web DropDown List in ASP.NETJul 23, 2003. In this example we will build an ASP.NET User Control which provides a listing of colors with the list items displayed in the actual color that the list item represents.
  • Enter Null Values for DateTime Column of SQL ServerSep 26, 2003. Inserting a null value to the DateTime Field in SQL Server is one of the most common issues giving various errors. Even if one enters null values the value in the database is some default value as 1/1/1900 12:00:00 AM.
  • Overriding Non-Virtual Implemented Interface Methods Oct 02, 2003. In the .NET framework many classes implement interfaces non-virtually. Presumably this is because it does not make any sense for those methods to be overridden.
  • Photo Browser and Wallpaper ChangerOct 20, 2003. The attached source code is a Photo Browser and Wallpaper changer. You can save your favorite photos in a list and loud it at any time.
  • Edit/Update a Chosen Database RecordDec 09, 2003. This article and available source code shows how to edit and update a database record through a DataGrid control
  • Object Oriented Concepts in C#Dec 24, 2003. In this article we will discuss key concepts of object orientation with their practical implementation in C#. We will discuss here basics of OOPS including Interfaces, Access Modifiers, inheritance, polymorphism etc.
  • Integrate Through Web Interfaces with C#Jan 08, 2004. This article proposes a way for integrating the enterprise applications through web interfaces. Since the web interfaces are widely available for many existing applications, the method may well reduce the cost of building an integration system with less time and get ride of the dependency on other resources.
  • Hello World in different StylesJan 09, 2004. I've attempted to write the traditional 'Hello World' in different styles. This explores the different possibilities of addressing a problem - 'Hello World' with different features of C# language and .NET framework.
  • DropDownList Selection as you type inFeb 09, 2004. The ASP.NET DropDownList server control allows positioning within the list by typing the first character. This method does not require a trip to the server.
  • XML TransformationsMar 15, 2004. This article shows you how to use XML transformation classes defined in the .NET Framework class library to transform XML data into various user interfaces.
  • Go Beyond the Limits of ASP.NET FormMar 22, 2004. One of the most common hitches that ASP developers encounter when they first approach ASP.NET is that managed Web applications must be written according to a single-form interface model.
  • Learning Visual Studio 2005 IDE - The DesignerJun 07, 2004. In this article of Learning Visual Studio 2005 IDE series, I will explore some of the designer features and the breakdown of the classes of a Windows Forms project.
  • Using the Tablet PC as a Flashing Restaurant Menu in C# and .NETJun 08, 2004. This is a simple application written for a restaurant using Tablet PC that allows you to list such things as lunch specials and have the colors on the board change randomly to produce an interesting flashing sign effect.
  • Refactoring in Visual Studio 2005Jun 11, 2004. Refactoring allows developers to use the built-in feature of Visual Studio to rename and convert and change the signatures and definitions of a class members. In this article, I will show you how refactoring feature provided by Visual Studio 2005 can be a handy tool when you are reorganizing or optimizing your existing projects.

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