C# Corner

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  • Binary Search Using ArrayList Jan 10, 2000. The ArrayList class provide binary search algorithm and more...
  • Use C# to write comments and documentationJan 12, 2000. Comments and Documentation is one of the most hated tasks by programmers. By using C# programmers can can automatically builds the documentation and comments in the code. This documentation is a XML file which is more or less self explanatory.
  • C# IndexerJan 15, 2000. An indexer is a member that enables an object to be indexed in the same way as an array.
  • My First C# ProgramSep 29, 2000. This article explains how to create your first C# program.
  • Creating an Empty Project using VS.NETDec 04, 2000. This tutorial guides you towards your first C# Empty project step by step. After that I'll show you how to add a class to the project and few members to the class and call this class members from the main method.
  • Implementing Delegates in C#Feb 04, 2001. The Zip file contains two projects. One is VB.Net and the other is C#. Each project is an example of the same use of a delegate. A base class is derived and the delegate calls a method on several classes derived from the base class.
  • Writing Your First Multithreading ApplicationFeb 14, 2001. If you have never written a multithreading application in C# or .NET, this application might be helpful for you.
  • Multithreading For BeginnersFeb 15, 2001. This tutorial is for beginners who want to write their first multithreaded application in C# and .NET.
  • Using the out ParameterMar 07, 2001. Did you ever need your method return more than one value? The out keyword can be used to do the same.
  • Visual Studio .NET: Start upMar 20, 2001. The next version of Visual Studio 6.0 is Visual Studio .NET (VS.NET). In the previous versions of Visual Studio Microsoft has different menu options to pick development environment such as VC++, Visual FoxPro, Visual Basic or Visual Interdev. This version of Visual Studio has integrated everything in one IDE. The reason for that might be all development languages share common library and tools.
  • ADO.NET DataSet ProgrammingMar 20, 2001. A sample project shows you how to add, edit, delete, navigate, save records in a database using DataSet.
  • ADO Vs ADO.NET Web ServiceMar 22, 2001. In this example I'd like to demonstrate one of the most interesting features of the .NET runtime - the concept of Webservices.
  • Introduction to SOAPMar 22, 2001. Since the release I have been fascinated with this thing called SOAP, This bubbly new protocol backed by the power of XML is certainly going to make waves in the world of distributed computing. The first thing which comes into our mind is “Why the heck we didn’t think of this before?
  • Developing Web Applications in VS.NET Mar 29, 2001. This tutorial describes about Step-by-step tutorial guides you towards developing your first web application.
  • Writing Secure Code using C#Apr 06, 2001. Code access security is a mechanism that grants/denies access to resources within a method call. For example, code written by a person may be allowed to write to the disk while code from another one may be forbidden from accessing the disk. This control can be enforced even if the code written by both of them is used within a single application
  • File Merger and Splitter in C#Apr 10, 2001. This program can break up a large file into several files AND merge those files back into one single large file.
  • Invoking Web Method from one Web Service to AnotherApr 10, 2001. In this article I will show you how to connect a web service from another.
  • Naming Guidelines in .NETApr 20, 2001. Commenting and following a uniform naming guidelines in your code is one of good programming practices to make code more useful.
  • Auto CompilerMay 05, 2001. This is a utility to make it easier to compile from the command line. One of the problems with using the command line.
  • Line Numbering Utility in C# and JavaMay 08, 2001. This is the first of the series of programs I wish to write to help myself get a handle on C#.
  • Color GuideJun 11, 2001. This Program will generate all the colors that are supported in C# according to the Name.
  • The out and ref Paramerter in C#Jun 12, 2001. The out and the ref parameters are used to return values in the same variables, that you pass an an argument of a method. These both parameters are very useful when your method needs to return more than one values.
  • ADO.NET: What's changed in .NET Beta 2?Jun 20, 2001. ADO.NET API is one of the changed APIs. In this article, I've covered some of ADO.NET changes in Beta 2.
  • XML as Middle TierJul 12, 2001. There is always been a need that there will be an intelligent middle Layer between Database Server and the UI Code. There are many ways but one fantastic approach came in picture with the XML.
  • Events and DelegatesJul 26, 2001. Events in C# are based on delegates, the Originator defining one or more callback functions as delegates and the listening object then implements then.
  • Post in Mobile FormsJul 27, 2001. Till now whatever we are doing is in single page and the traversing between forms take place only in a single Page. If you Remember Something of WML there our most effective funda is posting from one form to other.
  • Get the Place Game in C#Aug 14, 2001. I have written a game in C# called Get the Place.
  • Calculator ExampleAug 14, 2001. Sample program shows you how to create a calculator.
  • Boxing and Unboxing in C#Aug 20, 2001. Boxing and unboxing is a essential concept in C#'s type system. With Boxing and unboxing one can link between value-types and reference-types by allowing any value of a value-type to be converted to and from type object.
  • Super String in C#Aug 20, 2001. Today I realized that I miss those Visual Basic/Visual C++ type operators. You know the ones: Left, Mid, Right.
  • Argument CompilerAug 20, 2001. Here is one argument compiler. Author is looking for your feedback.
  • Web Services between .NET, Java and MS SOAP Toolkit: Part 2Aug 24, 2001. This second article in this series dedicated to Web services comes as a sequel to the first one in which I started to tell you how you could build different kind of clients and services using MS SOAP Toolkit, Apache SOAP for Java and .NET Framework.
  • Validation Controls in Web Forms: Part IAug 24, 2001. Validation is one of the less talked about areas – often taken for granted.
  • Validation Controls in Web Forms: Part 2Aug 24, 2001. Validation is one of the less talked about areas – often taken for granted.
  • Web Service Between .NET, Java and MS SOAP Toolkit - Part IIAug 24, 2001. Second article in this series dedicated to Web services comes as a sequel to the first one in which I started to tell you how you could build different kind of clients and services using MS SOAP Toolkit, Apache SOAP for Java and .NET Framework.
  • A variety of Chart EnginesSep 07, 2001. The original code came from Scott Guthrie’s chart engine example. The differences from original code.
  • MailIntranet: A Mailing System for IntranetSep 10, 2001. This project is about a mailing system within a LAN environment. May it be a corporate office or a lab or any organization for that matter, this is going to be a useful one to communicate between individuals as well as departments.
  • using Array Class and IEnumeration in C#Sep 14, 2001. This article illustrates the usage of Array class and IEnumerator. Array class Provides methods for creating, manipulating, searching and sorting arrays, thereby serving as the base class for all arrays in the common language runtime.
  • Is there any need to Boxing and UnboxingSep 21, 2001. With Boxing and unboxing one can link between value-types and reference-types by allowing any value of a value-type to be converted to and from type object. Boxing and unboxing enables a unified view of the type system wherein a value of any type can ultimately be treated as an object.
  • 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.
  • Language Independence from COM to .NETOct 03, 2001. This article covers the subject regarding Language Independence. This term Language Independent means one can create an application using various languages. This Language independent starts from past COM (OLE & ActiveX) to present .Net.Let us see in detail.
  • Encapsulation in C#Oct 12, 2001. In Object Oriented programming Encapsulation is the first pace. Encapsulation is the procedure of covering up of data and functions into a single unit (called class).
  • Method Parameters in C#Oct 15, 2001. This article describes different method parameters such as value parameters, reference parameters, output parameters, and parameter arrays.
  • Docking Control in C#Oct 16, 2001. One of the first features of C# that took my interest was the ability to Dock a Control onto the edge of a Form.
  • Pointers in C#Oct 25, 2001. C# also supports pointers in a limited extent. A pointer is nothing but a variable that holds the memory address of another type. But in C# pointer can only be declared to hold the memory address of value types and arrays.
  • Inheritance and PolymorphismOct 29, 2001. By using the concept of inheritance, it is possible to create a new class from an existing one and add new features to it.
  • Debugging "Rubber Band Effect"Nov 06, 2001. Bug fixes for Rubber Band Effect in a form by Simon Bond demonstrated a small but useful rubber band effect application. If you play with the application for a while, however, you may find one major problem with it.
  • Implementing Stacks in C#Nov 06, 2001. With the help of C# we can also implement ADT (Abstract Data Types) with little effort. An example of ADT is a simple stack of integers.
  • 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.
  • Printing a Ruler using C# and GDI+Nov 12, 2001. If you misplaced your ruler, here's an application that will create one for you on your printer!
  • Adding Controls to Windows Forms at RuntimeNov 13, 2001. In this example I'll show how one can create and add controls to their Windows Forms at runtime.
  • How to create a "ComboBox button" in a toolbar in .NETNov 20, 2001. You can actually put a ComboBox in your toolbar by just dragging a ComboBox from the toolbox onto the toolbar but if you want the ComboBox to be one of the toolbar buttons, you are out of luck using the regular old ComboBox. One way around this is to use the DropDownMenu style of a ToolbarButton to create a pseudo-ComboBox.
  • Type Conversions in c#Dec 04, 2001. Type conversion is a process of converting one type into another. Using C# type conversion techniques, not only you can convert data types, you can also convert object types.
  • 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.
  • Understanding the System.Buffer ClassDec 13, 2001. Before we try out something with Buffer class lets understand Buffer class and its Members.
  • XP, Component Services and .NETDec 13, 2001. First of all, COM+ does revolutionize COM; it is not only a superior new version of the COM programming model it is also a new platform to design and develop components. In addition, COM+ Services in XP does have some differences from Windows 2000; also XP and COM+ 1.5 offer a richer set of services than was available in COM+ 1.0. This article will describe the basic component services on the XP.
  • 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.
  • Developing a Record Navigation Form with Unbound ControlsDec 26, 2001. Developing a record navigation form with unbound controls. The form enables you to navigate through the records one at a time. In this application we have used a combo box, two text boxes and various command buttons.
  • Prototype Patterns in C#Dec 26, 2001. The PROTOTYPE PATTERN comes under the classification of Creational Patterns. The creational patterns deals with the best way to create objects. This helps to copy or clone the existing objects to create new ones rather than creating from the scratch.
  • Overview of Automated TranscationsJan 04, 2002. Two or more .NET Framework objects can participate in the same transaction. One or more .NET Framework objects can participate in the same transaction as one or more COM+ objects. All objects must be hosted in Microsoft Windows 2K Component Services so as to receive services such as transaction processing.
  • Hangman Program Using C#Jan 19, 2002. Hangman was created to illustrate several features of C# including GDI+, string manipulation, array processing, using properties, as well as simple creation of objects.
  • Some situtions where one may like to use ILJan 29, 2002. This article requires knowledge of IL or at least desire to learn it. My intention is to give few illustrations where usage of IL is possible or only option.
  • 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.
  • Mandelbrodt Plotting Program Using C#Jan 31, 2002. This program illustrates the use of the algorithm to create the Mandelbrodt set. The formula is an iterative one and is plotted in the complex plane (x, yi).
  • 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.
  • C#RIS : Tetris Game in C#Feb 14, 2002. I have written a Tetris clone that demonstrates how to use off-screen graphics buffering for smooth animation and utilizes a multi-dimensional array approach to designing a game grid. The classes are largely self-explanatory and the techniques are documented in code well enough to explain what is going on.
  • Transcations in Web Services - Part 1Feb 26, 2002. I believe most of the database developers are familiar with transactions. Transactions are one of the common activities a database developer has to deal with. Transactions are also used in Web Services.
  • Authenticate Web ServiceMar 04, 2002. In this example we will build a web service that authenticates userid and password from an a very simple MS Access database. This web service exposes only one method to the client.
  • Multi-threaded Web Applications - Case I: Search EngineMar 07, 2002. This article is the first of the series of 4. I will demonstrate the use of threading in web applications by implementing a simply search engine. The following 3 articles in the series will be a Port Scanner, a Reverse DNS and a Web Hammer respectively.
  • Reflecting Data to .NET Classes: Part IIMar 08, 2002. This article continue the series of "Reflecting Data to .NET Classes". In the first article, we discussed the concept “Reflecting Data”. The techniques behind it were also explained and demonstrated. The source of data demonstrated in this article will be XML documents.
  • JIT CodingMar 11, 2002. One not so well known feature of .NET platform is possibility to invoke compiler and practically create code and assembly from running instance of application. It is possible to do that in two ways. First one is a bit simpler and involves namespaces System.CodeDom and System.CodeDom.Compiler, second one is more efficient and utilizes namespace System.Reflection.Emit. Since there are very few examples about how to use System.CodeDom.Compiler I will start with it.
  • Calling Managed Code from Unmanaged CodeMar 11, 2002. One significant part of developers (including myself) are doing some kind of automation of Microsoft Office. So I will concentrate on opposing side of problem, how to use managed assembly from MS Office or VB script. In this article, I will discuss how to call managed code from unmanaged code.
  • Multi-threaded Web Applications - Case II: Port ScannerMar 12, 2002. This article continues the 4-parts series of Multi-threaded Web Applications. In the first part, I have demonstrated how you can use multi-threading with ASP.NET to make a web based search engine more responsive, and to reduce the time required to compose the result. In this article, I will demonstrate how you can apply the same technique to a web based port scanner.
  • Tutorial: Working with Files and DirectoriesApr 03, 2002. One of the rich experiences in working with .NET is a huge collection of Base Class Libraries .
  • Asteroids in C#Apr 04, 2002. As my first experiment in a game design, rather than using a DirectX wrapper, I decided to explore the functionality of GDI+. GDI+ has lot of nice features to offer but performance wise it is slow. So GDI+ may not be a good idea to develop practical fast paced games. This game also includes sounds.
  • 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.
  • Implementing a Genetic Algorithms in C# and .NETApr 14, 2002. One of the more interesting developments that has come out of the Artificial Intelligence world is the invention of Genetic Algorithms.
  • MP3 JukeBoxApr 30, 2002. This is stable code and more generic than the first release. It has better error handling now to make it more 'idiot proof'.
  • Sorting MultiColumn ListView Windows Forms ControlMay 20, 2002. If you want to sort on the first column of a ListView, simply click the Sorting in the properties Window and choose Ascending or Descending as a value. If you want to do sorting in all the columns of a ListView, you need to write custom sorting using the ListViewItemSorter property.
  • Display and Hiding SIP on a Pocket PCMay 21, 2002. When you get your hands on a Pocket PC for the first time you have to wonder just how the heck do you enter information?
  • Unit Conversion Tool for Pocket PC with Compact FrameworkMay 22, 2002. I have created a Unit conversion tool to calculate conversion from 16 different types.
  • Case Study: Demo Networking Financial System May 23, 2002. In this tutorial I will discuss some of the design and development issues that one might consider when using .NET framework for developing Network affiliated applications.
  • An Editable GridView Control in C# and .NET - Part IIJun 19, 2002. In this article we will take advantage of the XML classes available to us to persist the GridView control that we talked about in our first article in this series. The two classes we utilize in our code are XmlTextWriter and XmlTextReader.
  • An Editable GridView Control in C# and .NET - Part II Persisting in XMLJun 19, 2002. In this article we will take advantage of the XML classes available to us to persist the GridView control that we talked about in our first article in this series. The two classes we utilize in our code are XmlTextWriter and XmlTextReader.
  • Redhotqlue C# ArrayObjectJun 20, 2002. Unlike Visual Basic the C# language does not provide a standard mechanism for re-dimensioning (resizing) arrays. This component provides that additional functionality for arrays created in C#.
  • Communication Between Two Forms: Part-IIJun 24, 2002. Last time I wrote about the possibility of sending a string from a textbox in one form to another.
  • 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.
  • Working with Arrays in C#Jul 09, 2002. This tutorial discusses array programming in C# and .NET. It starts with the discussion of simple arrays and then delves into more complex topics such as jagged and multi-dimensional arrays. In the end, it discusses the Array class and it's methods for searching and sorting an array's items.
  • Programming C#: Working with Arrays in .NETJul 09, 2002. This article concentrates on arrays in .NET and how you can work with arrays using C# language. Article also covers the Arrays class and its method, which can be used to sort, search, get, and set an array items.
  • Writing a Generic Data Access Component - Flexible ApproachJul 18, 2002. Here is one more flexible approach to achieve the same. I prefer this approach to generic data access.
  • Using MSIL Code to Close Application ProgrammaticallyJul 18, 2002. You can use MSIL code to call Win32 APIs and one of the simplest example of it is by closing an application programmatically.
  • Writing a Single Event Handler for Multiple ControlsJul 22, 2002. Writing a Single Event Handler for Multiple Controls by Giuseppe Russo. Jul 22, 2002. I have noticed that in many articles, I read, people use a longer method of clearing many textboxes, as well as handling more than one control at the same time.
  • Evaluating Neper's Numbers in C#Jul 22, 2002. One of the most interesting number in mathematics is the Neper's number : "e".
  • Using Visual Studio .NET to Build and Deploy ApplicationsJul 29, 2002. No matter how much time you spend designing your application there is one key stage where it can all fall apart, the build and deployment stage.This is a first in a series of articles in which I am going to demonstrate how to use Visual Studio .NET.
  • A Generic Data Access Component using Factory PatternJul 30, 2002. the article A Generic Data Access Component using Factory Pattern provides a very good way of creating ADO.Net data provider independent applications, but there is one problem with it. Different ADO.Net data providers use different approaches in labeling of parameters in SQL statement.
  • A Virtual Photo Album in C# and .NETAug 05, 2002. This album allows you to drag your images directly from Windows Explorer into the spot you want your picture to occupy. You can also edit the captions by clicking on the labels under the pictures.
  • 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.
  • Double Buffer Drawing with DirectDraw: Part1Aug 15, 2002. Because we will be primary focusing on 2D game programming in the first articles, we will use the DirectX7 API which is perfect for its DirectDraw class and simplicity. Don’t worry for not having the right DLL because DirectX8 has full backward compatibility to DirectX7 and the COM object should already be available on your computer if you have DirectX 8 installed.
  • The CodeLib ProgramAug 26, 2002. Reusability of code is one of the common practice in a programmer's daily life.
  • 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 .

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