C# Corner

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  • New Modifiers in C#Jan 26, 2001. If you come from a C++ or Java background to C# then you will of course notice some strange keywords introduced to this new language, especially the "new" and "override" modifiers.
  • Chat Server and Client in C# Using Remoting TechnologyFeb 16, 2001. This application is a simple Chat server and Client, which is conversion of Java RMI chat server and client. The Java client was a Applet and present application client in Windows Forms.
  • Chat Server and Client in C# Using Remoting TechnolgyFeb 16, 2001. The application is a simple Chat server and Client, which is conversion of Java RMI chat server and client. The Java client was a Applet and present application client in WinForm.
  • Sticky NotepadMar 05, 2001. I wanted to experiment with writing a program that would run from the "System Tray" of window (that's where you have the date displayed...) since that's not possible with pure Java.
  • 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?
  • Assemblies : The Ins and Out : Part IApr 13, 2001. In Part 1, I will cover what exactly an assembly is, and what an assembly contains.
  • Assemblies : The Ins and Out : Part IIApr 16, 2001. In this part, I will discuss both Private and Shared assemblies and how to create a "Shared Assembly".
  • Assemblies : The Ins and Out : Part IIIApr 20, 2001. In this part I will discuss in more detail than Part 2, the available utilities for manipulating assemblies.
  • .NET framework comparison with Java ArchitectureMay 08, 2001. This article outlines Microsoft's proposed standardization of .NET framework in ECMA forum as CLI (Common Language Infrastructure), but the Microsoft documentation refer this as CLR (Common Language Runtime).
  • Line numbering utility in C# and JavaMay 08, 2001. After reading this article Java programmers should be able to decipher and de-jargonize the .NET architecture and relate it with the proposed ECMA standard.
  • 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#.
  • Will Java and .Net Framework Co-exist?May 15, 2001. The article begins by briefly probing what constitutes the Java platform and .NET framework.
  • Control Statemenats - Part 1Jun 01, 2001. This lesson shows how to use c# control statements, and the difference between these controls in C++/ JAVA and c#. Sample includes single selection, if-else, and multi case ..
  • Net DDE to DOTNET RemotingJul 02, 2001. This article travel through time to trace the genesis of Dot Net Remoting right from RPC to RMI till SOAP.
  • Calling Java Program from C#Jul 18, 2001. This article shows you how to call a Java program from C#.
  • Web Services between .NET, Java and MS SOAP Toolkit: Part IAug 24, 2001. WinGhost 2.0 application allows you to show and hide applications running on your machine. I find this program useful at my work as I do lot of programming at any given time I can have a bunch windows open. I use it normally to hide just my windows I don't access that often.
  • Web Services Between .NET, Java, and MS SOAP toolkitAug 24, 2001. This article will try to explain the how you can build web services and/or clients with any of the three languages: .NET, MS SOAP Toolkit and Java. But the real point of the article is to show you how you can build clients for web services from any of above-mentioned languages.
  • 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.
  • 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.
  • Regular Expressions Usage in C#Sep 07, 2001. The source code shows how to use Regular Expressions in C#.
  • Factory Patterns in C#Dec 10, 2001. The FACTORY METHOD PATTERN comes under the classification of Creational Patterns. The creational patterns deals with the best way to create objects.
  • 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.
  • Observer and .NET event delegatesDec 17, 2001. The purpose of this article is to try to introduce observer pattern and compare it to .NET event delegate handling of notifications.
  • Builder Patterns in C#Dec 20, 2001. Builder is an object creational design pattern that codifies the construction process outside of the actual steps that carries out the construction - thus allowing the construction process itself to be reused.
  • 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.
  • Exception Handling in C#Jan 03, 2002. In C# Exception is a class in the system namespace. An object of an exception is that describe the exceptional conditions occur in a code That means, we are catching an exception, creating an object of it, and then throwing it. C# supports exceptions in a very much the same way as Java and C++.
  • 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."
  • Basic FTP in C#Jan 10, 2002. FTP client developed using Windows Forms. The source code uses a rigid Model-View-Controller design pattern.
  • Bridge Patterns in C# Jan 17, 2002. Bridge Pattern is commonly known as Handle/Body idiom in C++ community. This pattern is used for decoupling an abstraction from its implementation so that the two can vary independently.
  • Composite Patterns in C#Jan 23, 2002. A Composite is a tree structure consisting of individual objects mixed with compositions of objects, that is, objects that have other objects as their children.
  • 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.
  • N-Tier Development with Microsoft .NET : Part IFeb 15, 2002. The purpose of this article is to examine a proof of concept on an architecture that follows the DNA pattern on concept only.
  • Creational Pattern - BuilderFeb 19, 2002. The Builder pattern allows a client object to construct a complex object by specifying only its type and content. The client is shielded from the details of the objects construction.
  • 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.
  • Prototype PatternMar 22, 2002. The Prototype pattern is used when creating an instance of a class is very time-consuming or complex in some way.
  • Function Overriding and Its Impact During Object InitializationMar 25, 2002. Different languages have different ways to initialize an object. C# and Java both have almost similar ways to initialize an object with few subtle differences.
  • .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.
  • 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.
  • A Generic Data Access Component using Factory PatternJul 24, 2002. This article shows to utilize the System.Activator class and a factory pattern to create the concrete provider classes.
  • A Generic Data Access Component using Factory PatternJul 24, 2002. Another way to solve this problem is to utilize the System.Activator class and a factory pattern to create the concrete provider classes as was pointed-out in Dan Fox's article "Design an Effective Data-Access Architecture" (.netmagazine, vol. 2, no. 7).
  • 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.
  • Validation Server Controls in Web FormsAug 05, 2002. When working with Web applications, developers need to write two separate codes using Java Script and VB Script to validate user inputs.In this article we are going to see, how we can reduce the programmers effort on coding, reducing the execution process time and simplify the code handling and less number of lines in the coding.
  • Singleton Patterns in C# RevisedDec 16, 2002. I am coming from the Java world, where synchronizing the Singleton creation is common practice.
  • 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.
  • C# Versions of Java's StringTokernizerJan 13, 2003. Here is another C# version of the Java StringTokenizer Class from the version posted August last year on your site. Given a string and a set of delimiters, the class return an enumeration of substrings based on the delimeters passed in.
  • Implementing Design Patterns in C# - Singleton PatternJan 23, 2003. There are times, when one need to have a class which can be only instantiated once. Singleton Design Pattern addresses to such situation by providing a design for such classes (known as Singleton class).
  • The "ins" and "outs" of Using Stored Procedures in C#Jan 27, 2003. This article reviews the creation of stored procedures with parameters using the Visual Studio IDE.
  • Implementing MVC Design Pattern in .NETFeb 25, 2003. This article explains the basic concept of the Model View Controller (MVC) design pattern and also shows how how closely .NET Framework can be used to implement the MVC design pattern with the one that originally conceived.
  • Possible Usage of Visitor and Type CastsFeb 25, 2003. In this article I will try to introduce Visitor pattern and one possible variation on it. It treats problems related to projects projects where high level of adaptability is needed.
  • PERST: A Simple, Fast, Convenient Object Oriented DatabaseMar 05, 2003. PERST is a simple Object-Oriented Database implemented with pure C-Sharp and Java implementations.
  • 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.
  • 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.
  • Java Like StringTokenizer in C# Jun 11, 2003. The StringTokenizer class is yet another implementation of a java-like StringTokenizer in C#.
  • 2D ChartingAug 11, 2003. I was amazed at what the VS.NET IDE does for a programmer as I was primarily used to Java via the command line.
  • Understanding SQL Server Yukon Service BrokerFeb 25, 2004. The new version of Microsoft SQL Server™ "Yukon" comes together with a set of technologies capable of enlarging the horizon for database applications. One of the most remarkable technologies is the Service Broker that makes it possible to build database-intensive distributed applications. In this article we explore the core concepts of the Service Broker and show how to use its potentialities to build applications with message interchanging.
  • Web Services-InteroperabilityAug 04, 2004. In this article, we will see what interoperability is all about, comparison between Java and .NET interoperability, the benefits of and challenges faced in interoperability and the role of WS-I in this overall scenario.
  • Creating a Managed Automated Information Agent(mBot)Aug 16, 2004. mBot manages multiple RTC Client objects and exposes interfaces to them via .Net Remoting and .Net Web Services so that they can be managed and used remotely by other .Net applications or from entirely different platforms such as a Java J2EE/SOAP application like Jabber running on Linux or Windows.
  • Handling the Queuing of Messages in a Multithreaded ProgramSep 06, 2004. In the financial world you have to deal with messages being spewed at you in large quantities at a rapid rate. For example stock quotes, market data, and orders come flying at you through some sort of wire and you as a programmer have to handle them in a way that doesn’t overwhelm you or the machine.
  • Writing unsafe code - pointers in C#Oct 13, 2004. In this article I will give a short description of one of the feature of C# which are pointers and so-called unsafe code. This subject is particularly close for C++ programmers. Moreover, it is a feature that we do not find in Java.
  • A Chess Program using C#Nov 29, 2004. This is a chess program, made using C#. It has used object oriented concepts and design patterns like Flyweight, Factory and Decorator. Two player can play this game and it has facility to drag-drop pieces. It also shows potential positions of each pieces which is useful for learning.
  • Creational Patterns - SingletonMay 31, 2005. This article discusses the implementation of the Singleton Design Pattern.
  • Microsoft patterns & practices: The Enterprise LibraryJul 06, 2005. Microsoft patterns & practices provide scenario-specific recommendations illustrating how to design, develop, deploy, and operate architecturally sound applications for the Microsoft .NET platform.The following article covers details on the Data Access Application Block.
  • Enterprise Library Caching Application BlockJul 12, 2005. Microsoft patterns & practices provide scenario-specific recommendations illustrating how to design, develop, deploy, and operate architecturally sound applications for the Microsoft .NET platform. The following article covers details on the Caching Application Block.
  • Microsoft patterns & practices: The Enterprise LibraryJul 12, 2005. Microsoft patterns & practices provide scenario-specific recommendations illustrating how to design, develop, deploy, and operate architecturally sound applications for the Microsoft .NET platform.The following article covers details on the Data Access Application Block.
  • DNS QueryAug 18, 2005. This example shows similarity of c# and java and how to implement dns query.
  • Design Patterns Part - IAug 26, 2005. Design patterns are about design and interaction of objects, as well as providing a communication platform concerning elegant, reusable solutions to commonly encountered programming challenges.
  • Design Patterns (Strategy Pattern) Part - IIAug 31, 2005. Define a family of algorithms, encapsulate each one, and make them interchangeable. Strategy lets the algorithm vary independently from clients that use it.
  • Migrating from Java to C# Oct 03, 2005. Microsoft has created a tool called Java Language Conversion Assistant (JLCA), which automatically converts Java code into C# for developers who want to move existing applications to the .NET Framework.
  • Design Patterns in C#Nov 01, 2005. To define design patterns in simple words they are "popular solutions for common design problems". They are very helpful in designing architecture and they also increase ease of communication among the developers.
  • Navigating Data Grid using Client ScriptingNov 10, 2005. It's very common practice to use the Data Grid to present data over web pages. Though the Data Grid is provides the richer UI presentation if not coded and handled effectively it can have great performance issues. This article gives the code sample for navigating the data grid using the Client Scripting (thereby can be used for lots of validation before doing the Post Back to the server) and minimizing the round trip to server
  • Introduction to Model View Control (MVC) Pattern using C#Dec 12, 2005. The benefits of using the Model-View-Control (MVC) pattern in our development projects is that we can completely decouple our business and presentation application layers. Furthermore, we will have a completely independent object to control the presentation layer.
  • How to Select all Checkbox when Header Checkbox is SelectedDec 30, 2005. Here I have provided the code using javascript to check/uncheck all checkboxes when header checkbox is checked. I recommend JAVA Script because its executed at client side and saves request Round-Trip time.
  • Web Service : Asynchronous call by using Java Script and DHTML behaviourDec 31, 2005. This article shows how to make asynchronous call of web service by using Java Script and DHTML behaviour.
  • Migrating Java RMI to .NET RemotingJan 16, 2006. .Net Remoting and Java RMI are mechanisms that allow the user to invoke method/methods in another address space. The other address space could be on the same machine or a different one. These two mechanisms can be regarded as RPC in an object-oriented fashion. This article describes how to migrate java RMI applications to .NET Remoting applications, with practical examples.
  • C# using the Proxy Pattern to Define RelationshipsJan 23, 2006. I was recently working on a 2.0 Framework project where we had many types of related objects. However, we needed to ensure that there were not multiple instances of the same object in memory. Usually the GOF Proxy pattern is used to hide or control access to an object, but we can also use it to define relationships between objects.
  • C# Heap(ing) Vs Stack(ing) in .NET: Part IVJan 30, 2006. Having a basic understanding of how memory management works will help explain the behavior of the variables we work with in every program we write. In this article we’ll look further into Garbage Collection (GC) and some ways to keep our applications running efficiently by using static class members.
  • Understanding C# Events: What They Are and Where They Came FromJan 30, 2006. To help you get a working knowledge of C# events and event handling, this article explains where events come from, what they really are at a functional level and how they are expressed in C#. This article specifically looks at the Gang Of Four (GOF) Observer pattern.
  • An Introduction to C# GenericsFeb 06, 2006. There is a reality; most of the developers confuse about C# Generics. Actually, there is no reason for that. If your background comes from C++ or Java you may understand more easily. What “Templates” tell you from your C++ knowledge or “Generics” from Java.
  • Integrating .NET Web Services with Java and classic ASP Clients for InteroperabilityFeb 13, 2006. The goal of this article is to show to integrate Microsoft's .NET Platform Web service with other platform like Java and ASP. The samples demonstrate basic techniques and principles that are used to cross-platform interoperability via Web services.
  • Web Services for .NET and J2EE InteroperabilityFeb 13, 2006. Web services technologies are designed to support the interoperability between many different application development platforms that exist today. This article is focused on the fundamentals of .NET and Java interoperability using Web services technologies.
  • Wrapper Patterns in C#: Part IFeb 13, 2006. Did you ever wish for a superhuman power to be impervious to bullets or travel outside your body? How about the superpower to be able to breathe underwater or fly? Or how about a changing the way you look so you can disguise yourself as anyone, or anything? In this series of four articles, we will travel down the C# wrapper rabbit hole and see how it is all possible with some patterns: Proxy, Decorator, and Adapter.
  • Wrapper Patterns in C#, Part II: The Proxy PatternFeb 14, 2006. Did you ever wish for a superhuman power to be impervious to bullets or travel outside your body? How about the superpower to be able to breathe underwater or fly? Or how about a changing the way you look so you can disguise yourself as anyone, or anything? In this series of four articles, we will travel down the C# wrapper rabbit hole and see how it is all possible with some patterns: Proxy, Decorator, and Adapter.
  • Wrapper Patterns in C#, Part III: The Decorator PatternFeb 15, 2006. Did you ever wish for a superhuman power to be impervious to bullets or travel outside your body? How about the superpower to be able to breathe underwater or fly? Or how about a changing the way you look so you can disguise yourself as anyone, or anything? In this series of four articles, we will travel down the C# rabbit hole and see how it is all possible with some wrapper patterns: Proxy, Decorator, and Adapter.
  • Wrapper Patterns in C#, Part IV: The Adapter PatternFeb 16, 2006. In this series of four articles, we will travel down the C# rabbit hole and see how it is all possible with some wrapper patterns: Proxy, Decorator, and Adapter.
  • Abstract Factory Design Pattern in ADO.NET 2.0Feb 17, 2006. This article will discuss the Abstract Factory Design Pattern and its real-world applications in .Net Framework 2.0.
  • Simple Factory Pattern Side by Side with Abstract PatternMar 02, 2006. This article will discuss the Simple Factory Pattern and how to use it with Abstract Factory Patter discussed in the previous article.
  • Data Access Component and the Factory Design PatternApr 05, 2006. A generic Data Access Component implementation written in C# that supports SQL, Oracle, OLEDB and ODBC data providers. Using the Factory design pattern for instantiating the data provider correct and specific objects determined at run time.
  • Data mining and SQL Server 2005Apr 11, 2006. Data mining is a key member in the Business Intelligence (BI) product family in SQL Server 2005 . Data mining is about analyzing data and finding hidden patterns using automatic or semiautomatic means, which can be explored for valuable information. It is about learning the characteristics of data set, which are not possible to discover by simple seeing.
  • Prototype Design Pattern: Easy and Powerful way to copy objectsMay 05, 2006. This article mainly focuses on the Prototype design pattern along with advantages and possible practical scenarios where this pattern seems to be the best choice.
  • An Elegant C# Data Access Layer using the Template Pattern and GenericsMay 22, 2006. The GOF Template pattern coupled with .NET 2.0 Framework generics provides an awesome synergistic alliance. This article demonstrates how to drastically reduce the amount of code required in building a data access layer. Less code to debug... less code to break... less code to maintain... what could be better?
  • Top 10 Reasons to Switch from Java to Visual C#Jun 03, 2006. This article details the major reasons for Java programmers to consider switching from the Java language to Visual C#.
  • Six C# features Java developers will kill for...Jun 21, 2006. C# is called Java on steroids, and everyone agrees that it is based on some long-time Java ideas and concepts. But, there are differences, and some of them make C# very powerful compared to Java. Here are six of them.
  • Six Java features C# developers will kill for...Jul 06, 2006. Not everything on the .NET framework is perfect, and Microsoft still has more improvements to implement. This time we will look at six features available to Java developers but unfortunally absent from C#.
  • Iterator Design PatternJul 11, 2006. This article, explains how to use the Iterator pattern to manipulate any collection of objects. To explain this I am using two interfaces IEnumerator and IEnumerables.
  • Singleton PatternJul 11, 2006. The singleton design pattern is designed to restrict instantiation of a class to one (or a few) objects. This article talks about building .NET applications using singleton pattern.
  • The GOF Abstract Factory Design Pattern In C#Aug 04, 2006. This article covers the basics of the GOF Abstract Factory design pattern by looking at building Model T automobiles.
  • Introduction to the GOF Strategy Pattern in C#Aug 08, 2006. For this article, we’ll be building an exciting calculation engine that does remarkable things like adding, subtracting, multiplying and dividing through implementation of the strategy pattern.
  • The .NET 2.0 Framework Provider PatternAug 11, 2006. The Provider Model Design Pattern was first introduced with the .NET 1.1 framework, specifically in the ASP.NET starter kits and was formalized in ASP.NET Whidbey as a membership management provider API (Application Program Interface). It's primary purpose is to separate the definition for an API from the implementation. This keeps the API flexible by enabling the core functionality to be flexible and easily changed.
  • Multithreading Made Easy in .NET 2.0Aug 31, 2006. This article demonstrates a very easy alternative to normal multithreaded programming in .NET. A freely available library called CSP.NET is presented and a sample application shown.
  • A Basic .NET and J2EE Interoperability using WebSphere MQ Sep 13, 2006. This artile explains a Basic .NET and J2EE Interoperability using WebSphere MQ. It shows the sending of message from DotNet Application then consuming by Java application using Websphere MQ and vice versa.

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