C# Corner

Resources  
  • Meal Scheduler in C#May 04, 2000. This service reminds you when it time to eat your lunch, BF or dinner.
  • Graphics Animation SampleMay 16, 2000. After finishing a text program (lottery) its time for some fun. Everytime a have to work with a new language.I write a small program to bounce some balls in a box.
  • PaintBrush in C# - IIJan 30, 2001. This is a PaintBrush Application. In this Paintbrush user can draw some images and he can save the images in a persistence storage and later time can retrive the images.
  • Reflection in .NETFeb 26, 2001. Refelction is the mechanism of discovering class information solely at run time. Wondering where it would be useful?
  • Accessing .NET Components from COM Clients and COM components from .NET ClientsMar 26, 2001. In this article I am going to explain how to access a .NET component from a COM client and accessing COM from .NET clients.
  • Text to HTML ParserApr 05, 2001. If you have been into developing Web Applications then you might have at many times experienced that when you display multiple lines of data from a database you loose the spacing or formatting between multiple lines of data.
  • Understanding How Assert Effects SecurityApr 25, 2001. Assert is a security action that is evaluated at run time. Code Access Permission classes and Permission Sets support a method called Assert. Using the Assert method to control access to resources or actions will allow your code to perform actions that it normally has permission to perform and will allow other callers up stream in the call stack to have access that they would not normally have.
  • Defining Custom Entry PointsApr 30, 2001. In this article i am going to demonstrate how we can manipulate the IL code to change the behaviour of how the .NET programme executes.
  • A Lottery Program in C#May 05, 2001. I am learning C# in any spare time I have and instead of diving in and writing a monster program I thought a nice introduction would be good.
  • .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).
  • Quote ResponderMay 09, 2001. The program will periodically check your mail for incoming email requests for a stock quote.
  • Working With Process ClassMay 22, 2001. This article is aimed at introducing the novice .NET developer to the basic usage of System.Diagnostics services included in the .NET BCL.
  • Graphics Animator in C#May 26, 2001. This program will generate a html page with animated gif. You just need at least 2 gifs and use the program to set the time to display each image.
  • Web Scanner Part-1Jun 01, 2001. My favourite technology web site is updated throughout the day. I thought it would be nice to have a program that checked every 30 minutes for updates and told me what stories were there.
  • Validation Contol in Mobile FormJun 04, 2001. In this article i'll be showing the power of Valiation Control which u can use with Mobile Application.There are total six Valiation Control as provided. Here i am showing four of them in this example and the rest two are Valiationsummary and CustomValidator.
  • Creating Run-Time Menus in C#Jun 14, 2001. Sample example on how to create runtime menus.
  • Animate System Tray in C#Jun 18, 2001. I am sure those who have worked with Visual C++ would have experienced the problem of displaying an icon in system tray and manipulating with context menus for that. Previously I use to display System tray icons with Shell_NotifyIcon by filling a structure and manipulating with a context menu for that icon is another problem.
  • Time TickerJun 26, 2001. Graphics Class encapsulates a GDI+ drawing surface. The FromHWND method is used to create a new instance of the Graphics class from a window handle. Clear method fills the entire drawing surface with the specified RGB color by using Color class. DrawString method draws a string using Font and SolidBrush classes.
  • 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.
  • Synchronization in Parallel threadsJul 02, 2001. The Threads makes us able to run multitasks at a time. In fact Computers (John von Neumann Architecture) don't execute the tasks parallel .The OS gives threads permission (depend on thread priority) to work on CPU. The sufficient degree of parallelism keeps the CPU busy and it is efficient.
  • Time Ticker2Jul 04, 2001. Microsoft had made lot of Changes for Beta2, some of the changes are old Namespace such as System.WinForms modified to System.Windows.Forms. In addition no. of new Namespaces like Microsoft.CSharp, Microsoft.JScript, Microsoft.Vsa etc...
  • .NET is the FutureJul 19, 2001. This has been a long time in coming. I couldn't write any more article because of some problems but finally I thought I should talk about the future of .NET. The reason is very simple, I'm getting almost 50 mails a day in my inbox just asking about the future of .NET and the comparison with other technologies. So I'm presenting my own views about the future possibilities of this technology.
  • Eater Game in C#Jul 31, 2001. This is a simple game written in C# in which the user moves a packman like player around the form and gobbles up red dots. The object is to get all the dots in as quick a time as you can.
  • Run-Time Menus in C#Aug 20, 2001. The following example demonstrates how to create menus on the fly.
  • 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.
  • Calendar Using DateTime ClassSep 05, 2001. The console based calendar program is a which when run shows current month's calendar using the C# Date Time Class.
  • Live News feed For Mobile SiteSep 05, 2001. Current News are read from a text file, which is being updated regularly after certain interval time.
  • How to By Pass ProxySep 10, 2001. There are many like me who are behind the Proxy and many time you are not able to use the recent Data in your Program from Web as your are not able to retrieve that data because of Proxy coming in between.
  • Real Time ApplicationOct 02, 2001. The Real time Application is a sample that shows the communication techniques between a client (TcpClient) and a server (TcpServer) application using Socket class on each side. The project also demonstrates how to using listview control in the real time project.
  • Working with Windows Forms ControlsOct 12, 2001. This program shows you how to use Windows Forms controls such as Check Boxes, Radio Buttons, and Combo Box.
  • Exception Handling in C#Oct 17, 2001. Exception handling is a builtin mechanism in .NET framework to detect and handle run time errors.
  • Checked ListBox Control In C#Oct 18, 2001. The following source code will provide the use of CheckedListBox Control In C#.
  • Introduction to Pocket PCOct 31, 2001. At the time of writing (Oct 2001) Microsoft has shipped Pocket PC 2002 and also has just released the Visual Studio .NET add-on for Pocket PC called the compact framework.
  • FlashCards Language Program : How to read and save Images in a Sql Server Database using ADO.NETNov 09, 2001. I thought it would be fun to write a simple program that displayed flashcards from a database and at the same time, show you how to read and write images to the database. This program is a simple flashcard program that talks to a single table in a Sql Server Database.
  • Email Notifier with Microsoft Agent--- GENIENov 16, 2001. Email notifier with Microsoft Agent is a TCP/IP application that notifies the user if there is email in the user's email server.
  • Monitoring File System using FileSystemWatcher Class - Part 1Nov 27, 2001. In this article, I am explaining you how to use FileSystemWatcher class. In part 2, a sample application, which helps you to monitor a specified directory.
  • 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.
  • C# and .NETJan 07, 2002. It is sometimes important to know the details of what the compiler does. You may want to know whether constants are evaluated at compile time, or whether constant strings are folded at compile time.
  • Playing with DataGrid ControlJan 08, 2002. The article gives a user the overview to show the importance and versatility of the DATAGRID control.
  • Interrogating System with WMI - Part 2Jan 24, 2002. After my last article on WMI it was time to get serious. WMI or Windows Management Instrumentation is useful on a local machine to produce a WINMSD type program but using it across a network makes it even more useful.
  • .NET Framework and Web Services - Part 3Jan 31, 2002. Here I am going to explain Web methods and how to write Web methods in C# and VB.NET.
  • World Clock Using Windows FormsFeb 11, 2002. I developed a C# application for finding World Timings given the US Central Timing.
  • 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.
  • FlashCards Language Program : How to read and save Images in a Sql Server Database using ADO.NETFeb 19, 2002. I thought it would be fun to write a simple program that displayed flashcards from a database and at the same time, show you how to read and write images to the database. This program is a simple flashcard program that talks to a single table in a Sql Server Database.
  • Microsoft Knowledge Base Web Service ConsumerFeb 22, 2002. In this Article I am going to show you how to consume Microsoft knowledge base Web service from our client.
  • 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.
  • Low Cost Credit Card VerificationMar 15, 2002. The last digit of a credit card is a check digit that is used to detect keystroke errors when a check card is entered into a computer.
  • 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.
  • Real-time Message Logging Utility - Part 1Apr 01, 2002. A message logger is a utility that helps in logging the messages thrown from functions/programs. It is useful in critical applications as it helps to know the time taken by a function to execute, the time that the function remained idle and any messages that the function wants to be logged for further analysis.
  • Tracking Time in a Window ApplicationApr 15, 2002. The program reads from an XML file to get the data about names and birth dates, so it is easy to add or remove names without changing the code in case my son decides the program should include his pet dog or turtle.
  • XML Schema ValidatorApr 16, 2002. The XML Schema Validator checks if a given XML document is well formed and has a valid schema model.
  • C# Corner Logo: 3D GDI+ EffectMay 10, 2002. "It's time to redesign the logo. Let's do some 3D work here". That's what Owen said an hour ago. And after that he drew a 3D C# logo on the board.
  • 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.
  • Trace Utility to Trace IP Packet PathMay 16, 2002. Trace utility traces the path of an IP packet. To understand the process, its important to understand ICMP protocol we are going to use for this purpose.
  • 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.
  • 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?
  • Save and Restore Setings of a .NET Form using XMLMay 28, 2002. Even though there are advantages to writing to the registry, there are times when a programmer does not want to impact anything outside of the directory where the program resides.
  • Spell Check Web ServiceMay 31, 2002. In this example we will create a Web Service which provides spell check functionality.
  • Configuring Applications in .NETJun 06, 2002. The .Net Framework provides a very convenient and flexible way to configure applications at run time.
  • 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.
  • SpellCheck.NET Parser in C#Jun 25, 2002. SpellCheck.net is free online spell checking site. Whenever I need to check my spelling I visit this site , so I decided to write a parser for this site.
  • 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.
  • 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.
  • 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.
  • CoolLayout .NET: A Windows Forms ComponentAug 02, 2002. CoolLayout.NET is design time enabled .NET component which helps to create professional forms with no coding efforts.
  • 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.
  • Transactions and Concurrency Control using ADO.NETAug 15, 2002. In this article I am concentrating on the transaction management and concurrency control in .NET environment.
  • Hex Colors in C#Sep 05, 2002. Currently I am developing a shareware application for generating image galleries for the web. There is a template engine built in that allows the user to specify colors as hexadecimal values, plus many other features.
  • TWINXBASE ServiceSep 09, 2002. This service scans in a directory by using FileWatcher component and when a file arrives, then the service will check the extension of the file, if the file has the extension .DBX then it will read the contents of the file and communicate with the database (C:\FILESERVICE\DB\MyDB.mdb) and insert / update / delete the records in the database -table.
  • Static Constructor in C# and their Usages.Sep 09, 2002. Static constructor is used to initialize static data members as soon as the class is referenced first time, whereas an instance constructor is used to create an instance of that class with <new> keyword.
  • Single Instance Control ComponentSep 23, 2002. This article is on a single Instance control component which checks whether any instance of your application is running on the System.
  • Generating Maze using C# and .NETSep 25, 2002. Did you ever get the feeling that cubicles were laid out with the idea that there could be no escape? (Must be I am a bit overworked these days). Today's article focuses on how to generate a maze using the depth first search algorithm. This is a very simple but clever algorithm that creates a maze by randomly stripping one available wall between two cells for every cell in the grid.
  • Eater Game II - The Stone MazeOct 02, 2002. This program combines the designs of the Eater Game and the Maze Generation Program to create a more challenging game, Eater Game II. In this game, you move a pacman-like character through a maze and eat as many stones as you can before time runs out. You have a minute and a half to try to eat stones before the pac-man simply freezes-up and accepts his quota of stones.
  • 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.
  • Drawing Shapes using ThreadingOct 25, 2002. This is simple multi-threading program that draws circles and rectangles. Each shape is handle by individual thread that created every time you press start button. Using sleep method on each thread we can change the speed of each shape.
  • 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.
  • Singleton Patterns in C# RevisedDec 16, 2002. I am coming from the Java world, where synchronizing the Singleton creation is common practice.
  • Dynamic Code Generation and Code CompilationDec 16, 2002. This is a simple application for generating the code dynamically and compiling it dynamically.
  • Mail Checker 1.0Jan 16, 2003. In this article, author shows how to create a program to check your IMAP mail.
  • 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).
  • Run Time CompilerFeb 07, 2003. In this article, I am going to discuss how to take a string then compile it and then how you execute it.
  • Pro Developer: This is BusinessFeb 25, 2003. I've been paying the rent as a professional software developer since the 80s. I've also worked both full time and part time as a musician for longer than that. In my travels, I've come to recognize a great many similarities between programmers and musicians. Both have the fire, passion and soul of the artist. And all too often, both are incredibly naïve when it comes to the business end of things. Business - you know, that aspect of your work where they actually pay you at the end of the day?
  • Developing Secure Web Sites with ASP.NET and IIS: Part IMar 04, 2003. Developing security for a site is like paying tax. You know it should be done at the end of financial year. But you keep it for the last and some time expect you should never have to do it. It is a similar kind of situation when building a web site. There are some web sites available to general public that can be access by any one. The security for these sites can be minimum or none at all. There are some web sites that publish and hold important information that have to be secure one way or another.
  • Execution-Time Code Generator for C#Mar 06, 2003. The Common Language Runtime provides a new way of doing things. The compile-time world still exist, but it is also possible to build dynamic systems where new code is added by loading assemblies or even by writing custom code on the fly.
  • 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.
  • Regular Expression ValidatorMar 14, 2003. This tool is useful when you are creating Regular Expression. This tool will help you in checking syntax of the regular expression typed in.
  • 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.
  • MWLabels and MWScrolllabels v3.0Apr 14, 2003. MWLabeland MWScrollLabels are back (v3.0). This time you can choose which StringFormat you want to use: traditional GenericDefault or GenericTypographic. GenericDefault is like a normal Label and GenericTypographic is what has been used in the previous versions of MWLabel and MWScrollLabel.
  • Getting Official DayTime using NIST TimeServerApr 21, 2003. This program shows how to create a simple socket to a NIST timeserver (Port 13) and using the Daytime Protocol, gets the official time.
  • How to Detect a Dialup Connection?May 15, 2003. In the article we'll see how to check connectivity with internet using VB.NET.
  • DataGrid and CheckBox ControlsJun 17, 2003. How to have checkbox that is checked or unchecked depending on a field value stored in the Database, and then allow the user to click on it and record the new checkbox state in the database.
  • 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.
  • Hard Coding Pape Size during PrintingJul 14, 2003. Every time I set up a new Windows printer I spend a few minutes going through every bit of the printer properties making sure that every bit is set to A4. The code discussed in this article shows, how you can do it programmatically.
  • User Controls in Internet ExplorerAug 13, 2003. 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.
  • Check Internet ConnectionAug 25, 2003. How to check if your computer is connected to the internet with C#. It's much more easier that other tutorials I've seen in other sites.
  • Export ASP.NET DataGrid to ExcelSep 08, 2003. Export to Excel is one of the most common functionality required in ASP.NET pages. Users can download the data from the DataGrid into an Excel spreadsheet for offline verification and/or computation.
  • 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.
  • Object Oriented: The Grownup Way to CodeSep 29, 2003. Back in my dark days of Procedural Programming, I remember someone giving me a problem, then banging out a few (hundred) lines of code, achieving my goal, and going on with my life. The next time a similar problem would arise, I’d rewrite, or in some cases, cut & paste my old code to achieve a similar, yet slightly different outcome.
  • Creating Word Find Pzzules in C# and GDI+Sep 30, 2003. Perusing the newsstands in New York you'll find newspapers, TV-Guides, magazines, and even books. In the magazine section you'll often find crosswords and books containing the puzzles you'll see in figure 1. The books contain pages and pages of puzzles with hidden words contained in the matrix of letters in which you can spend time going blind trying to find.
  • 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.

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