C# Corner

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  • FileDownloader : Download files using HTTPJan 10, 2000. This application contains a Form and a Class module . From Form we create a thread which execute the procedure to handle the NET download. This application can be enhance to do more down load as in Download manager by creating more threads.
  • Creating and Using Custom Attributes in C#Feb 27, 2000. Attributes are classes that allow you to add additional information to elements of your class structure.
  • ColorDialog in C#Dec 21, 2000. A ColorDialog control is used to select a color from available colors and also define custom colors. This article demonstrates how to use a ColorDialog in Windows Forms and C#.
  • 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.
  • Drag and Drop RevisitedMar 13, 2001. I've had a couple inquiries on how to do drag and drop in .NET again, so I've put together a simple app for dragging text from a TreeView to a TreeView and a TreeView to a ListBox.
  • Drag and Drop Using C#Mar 30, 2001. Drag and Drop in C# has been a question on the UseNet and many websites on C# so I have decided to tackle the problem here. This is an update of the directory tree component download on this web site.
  • Creating a Login User ControlApr 16, 2001. In this article, we have started with an introduction to the UserControl and have learnt to use the ADO+ DataReader.As we seen User Controls simplifies several common Web application scenarios.User Controls allow developers to easily define custom controls using the same programming techniques for writing Web Forms.
  • 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.
  • Ouch! There is a Hook in My C#May 15, 2001. As an extension to the J++ design practice, C# has a syntactic construct, called Attributes, which let you drop hooks to Windows API or modify the runtime semantics, like threading synchronization behavior. The C# has legalized the hooking practice by calling them Attributes, and including them in ECMA C# specification.
  • Mobile Fun with XMLMay 24, 2001. Here is something really wonderful in Mobile field .This example is for authenticating the Mobile Users against his settings stored in XML file. This is really good where all the ease of XML is applied. Function open the XML file and particular node data validate it against user inputs and do the specified.
  • Properties in C#: New Cover on old book Jun 06, 2001. Properties are accessor methods whose job is to retrieve and set the values of fields.
  • Message Box BuilderAug 14, 2001. This program will help you using MessageBox Class. Program generates code from what you choose.
  • Move Grid PuzzleAug 15, 2001. This is a console based application the user will be prompted for move such as L-Left, R-Right, U-Up, D-Down, E-Exit.
  • 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.
  • Web Browser in C# and VB.NETSep 11, 2001. This article explains how to add and web browser ActiveX to your project to developer your own customized web browser.
  • Using Attributes in C#Sep 14, 2001. This article shows how to create custom attribute classes, use them in code, and query them.
  • Understanding Properties in C#Oct 15, 2001. In C#, properties are nothing but natural extension of data fields. They are usually known as 'smart fields' in C# community.
  • Understanding Structures in C#Oct 23, 2001. A structure in C# is simply a composite data type consisting of a number elements of other types.
  • 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.
  • Interactive Shaped FormsNov 29, 2001. This Demo show how to create shaped form and customized buttons using Region, GraphicsPath and picture control and using picture control to play animate pictures.
  • Creating a Custom Data AdapterDec 03, 2001. A good programmer needs to know how to work with ADO.NET DataAdapters at the code level.
  • Deevloping a Banking System using VS.NET and Windows FormsDec 26, 2001. This article also focuses on deploying multiple windows forms and shows how to navigate between them.
  • Custom FileDialogJan 18, 2002. The purpose of this article is to give a simple example showing how easy it is to create a custom FolderDialog.
  • Drag and Drop for Board GamesJan 22, 2002. This application shows how the drag and drop features in C# could be used to create a simple board game or whatever.
  • Peer-to-peer Chat Program using Asynchronous SocketMar 22, 2002. This is a simple chat program, which uses asynchronous socket to provide connection between two machines.
  • Mortgage Calculator in C#Mar 22, 2002. Mortgage Calculator is a C# Application developed for calculating the detailed monthly mortgage payments based on the loan amount, down payment, interest rate, mortgage duration.
  • Performance Comparison of XslTransform InputsMay 02, 2002. To transform XML into HTML for use on a Web site or to transform it into a document that contains only the fields required you could use the XSLTransform class (found in the System.Xml.Xsl namespace).
  • Performance Comparison of XslTransform InputsMay 02, 2002. To transform XML into HTML for use on a Web site or to transform it into a document that contains only the fields required you could use the XSLTransform class (found in the System.Xml.Xsl namespace).
  • .NET Performance Counters, Part 1: Predefined CLR Performance CountersMay 13, 2002. In this article, I will describe what a performance counter is and introduce you to the predefined counters that you can use to monitor the state of the CLR while your applications run.
  • 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.
  • 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.
  • 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.
  • Customized Windows Forms Look and FeelMay 28, 2002. I have encountered instances when I needed a high level look and feel of Windows Forms and controls.
  • Custom Error Handling in ASP.NETMay 30, 2002. Structured exception handling is a fundamental part of the CLR and provides .Net programmers a great way of managing errors. In addition to CLR exception system, ASP.Net also provides ways of handling errors.
  • Configuring Applications in .NETJun 06, 2002. The .Net Framework provides a very convenient and flexible way to configure applications at run time.
  • Paging in Mobile Web FormsJun 10, 2002. The biggest difference between web applications designed specially for use on Mobile Devices is the limitation imposed by the small screen size of Mobile devices.
  • 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.
  • Imlememnting Drag and Drop in ListView ControlsJul 08, 2002. Drag and Drop operations in Windows can be achieved using 3 simple events - DragEnter, DragLeave, and DragDrop.
  • 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.
  • Macro to Add Strong Names to VS.NET ProjectsAug 06, 2002. When writing class libraries in Visual Studio .NET that are going to be placed into the GAC you will need to add strong name to the assembly. This is normally done by dropping out to a dos prompt and running the .NET utility sn.exe and then updating the assembly to reference the newly created .snk file.
  • Using Installer Classes to Ease Deployment in VS.NETAug 07, 2002. In this article I will demonstrate how to incorporate installer classes with your Visual Studio .NET msi's to handle any supporting tasks that your assemblies may need.
  • DataGrid Customization Part-II: Custom Sorting and DataGrid Column HidingAug 13, 2002. How to I get the name and index of the Column headers? How do I find out if mouse click right click was on a column
  • DataGrid Customiztion Part-III:Implementing Search Feature in a DataBound GridAug 21, 2002. In this article, I will show you how to exchange two DataGrid columns by dragging and dropping.
  • DataGrid Customization Part-IV:Exchanging a DataGrid Columns using Drag and DropAug 21, 2002. This article covers customized sorting and a DataGrid column hiding programmatically.
  • Creating Strongly Typed Custom Collections in C#Sep 02, 2002. In this article, author shows you how to create and use strongly typed custom collections.
  • 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.
  • COBOL and .NET Data TypesSep 24, 2002. .NET has created a new, level playing field for a multitude of programming languages to interact on a scale never before seen.
  • Customizing Default Project SettingSep 26, 2002. "How do I change the default exe name of my project?". I received this question in an email.
  • Attributed Programming in .NET using C#Oct 04, 2002. In this article, I illustrate the power of attributed programming by examples that show a modular approach to issues that can crosscut many classes. Attributes will provide exciting software development abstractions in the future.
  • 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.
  • Platform Invocation Services in .NET FrameworkOct 25, 2002. This article will cover the details of Platform Invocation Services provided in .Net Framework. Platform Invoke Services acts as a bridge between the managed and unmanaged code. This service enables managed code to call unmanaged functions which are being exposed by any dynamic link libraries (DLL’s) such as Win32 API’s or any custom DLLs.
  • 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.
  • Accessing Text Files using ODBC Data ProviderNov 12, 2002. In this article, I will show you how to access Access database files using ODBC data provider.
  • Drag and Drop using C#Nov 13, 2002. To allow your program to accept files using the drag and drop, you must first pick a control that you wish to be able to accept them.
  • MDI Image Viewer with Drag-Drop SuppportNov 21, 2002. MDI Image Viewer with Drag-Drop Support by Sergio Pinon. Nov 21, 2002. The attached source code project is an MDI Image Viewer that not only let you view multiple images simultaneously, it also supports drag and drop feature. To view one or multiple files, just drag some images from the Windows Explorer and drop on this program.
  • Daleks in .NETDec 11, 2002. The other night my girlfriend dragged me down to the NYC Public Library claiming that they had a huge Science Fiction movie section. Admittedly my taste in movies and my wife's taste in movies can vary slightly, however, I was willing to take a chance, given that rentals at the library are free as opposed to $4 at the local video store.
  • Low Down on Installing a .NET Assembly into the Global Assembly Cache (GAC)Jan 02, 2003. This article will walk you through the process of giving your assembly a strong name, and installing it into the GAC.
  • Designing and Implementing a Versatile Data Access Tier Jan 16, 2003. In this tutorial, we will drill down deeper in to the design of a n-tier architecture and our focus will be on the data access tier(DAT). Our goal is to design and implement an appropriate data access tier(DAT) for scalable, reliable and interoperable web application.
  • Filling out your 1040EZ Tax Form in .NETJan 21, 2003. Since the 1040EZ form is only a single page, I thought it would be fun to create a Window Form application that helped into the form. This program will allow you to fill out most of the fields and perform the calculations on certain fields as well.
  • DTS Custom Task in C#Jan 28, 2003. During last year I wrote an article about DTS and how to use it in C#. In that article I stated that I didn’t manage to solve the problem related to CustomTask. Today I finally forced myself to tackle that problem again and here is the result. Writing simple CustomTask in C# is the easiest part.
  • 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.
  • 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.
  • 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.
  • Basics of Extending Your Working Environment in Visual StudioApr 10, 2003. Visual studio.net offers a wide variety of options, which enable the user to create custom and personalized Visual Studio working environments.
  • Extending Your Working Environment in Visual Studio - AdvancedApr 24, 2003. In my previous article, you learned about how to create wizards and some simple objects such as DTE, Solutions, Project and Project Item. These objects help us to customize our Visual Studio working environment.
  • Extending Your Working Environment in Visual Studio - AdvancedApr 24, 2003. In my previous article, you learned about how to create wizards and some simple objects such as DTE, Solutions, Project and Project Item. These objects help us to customize our Visual Studio working environment.
  • Add Column Dynamically to DataGrid to Display CalculationMay 08, 2003. In this article we'll see how to create a DataGrid column which displays the calculation of more than one field in the database table. The calculation could be addition, multiplication or even filtering rows.
  • MultipartForm UploaderMay 16, 2003. MultipartForm Uploader addresses a bug in .NET and also adds the ability to include data fields with the upload.
  • Implementing Custom Paging in ASP.NET DataGrid ControlJun 01, 2003. This article shows you how to implement custom paging in ASP.NET DataGrid control.
  • 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.
  • DataGrid and Client Side EventsJun 17, 2003. This article shows you how to use DataGrid client side events including mouse over, on click and so on.
  • How to Change DataGrid Header Text?Jun 30, 2003. This article shows you how to change the header text of a DataGrid programmatically.
  • Customizing the Display of DataJul 02, 2003. This article shows you how to customize data display in a DataList control.
  • Drag and Drop Controls within a ContainerJul 08, 2003. The attached source code is a C# application that demonstrates the drag and drop of a Windows control within a container.
  • Custom ComboBoxJul 11, 2003. The attached source code is a C# application that demonstrates how to create a custom ComboBox control in Windows Forms.
  • Building a Navigation System in ASP.NETJul 16, 2003. This article shows you how to display single record per page and navigate through single record using ASP.NET.
  • 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.
  • Using Calendar Control in ASP.NETJul 29, 2003. In this article we'll see how to use Calendar control in ASP.NET.
  • EggTimer in C#Aug 26, 2003. This simple timer app will count down from whatever value is set in the textbox.
  • Custom Exceptions using Microsoft Exception Management Application BlockSep 02, 2003. This article shows you how to use Microsoft Exception Management Application Block to write custom exceptions.
  • Formatting Chemical Formulae in DataGridSep 25, 2003. In this article we'll see how to format chemical formulae in DataGrid Web Server Control.
  • 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.
  • Automatically Break into Code When Calling Debug.AssertDec 22, 2003. This sample creates a dll that once referenced by your ASP.Net or Web Service app, just adding a small block of xml into your web.config file will cause the debugger to automatically break into your code.
  • Display Alphabetically Sorted Data in a Data GridDec 24, 2003. This code sample shows you how to display data sorted alphabetically based on the values in the database.
  • Deployment: Customizing your .NET deployment ProjectsDec 29, 2003. The fact of the matter is that Visual Studio.NET already contains everything you need to create a rich setup experience for your users. In this article we are going to show you two ways to add a readme dialog to your application, the easy way and the hard way. The easy way requires absolutely no coding. The hard way requires coding and actually allows you to add complex custom features to your application.
  • DataReader in C#Feb 17, 2004. The ADO.NET DataSet is a data construct that can contain several relational rowsets, the relations that link those rowsets, and the metadata for each rowset. The DataSet also tracks which fields have changed, their new values and their original values, and can store custom information in its Extended Properties collection. The DataSet can be exported to XML or created from an XML document, thus enabling increased interoperability between applications.
  • DataAdapter in C#Feb 17, 2004. The ADO.NET DataSet is a data construct that can contain several relational rowsets, the relations that link those rowsets, and the metadata for each rowset. The DataSet also tracks which fields have changed, their new values and their original values, and can store custom information in its Extended Properties collection. The DataSet can be exported to XML or created from an XML document, thus enabling increased interoperability between applications.
  • DataView in C#Feb 17, 2004. The ADO.NET DataSet is a data construct that can contain several relational rowsets, the relations that link those rowsets, and the metadata for each rowset. The DataSet also tracks which fields have changed, their new values and their original values, and can store custom information in its Extended Properties collection. The DataSet can be exported to XML or created from an XML document, thus enabling increased interoperability between applications.
  • DataTable Events in C#Feb 17, 2004. The ADO.NET DataSet is a data construct that can contain several relational rowsets, the relations that link those rowsets, and the metadata for each rowset. The DataSet also tracks which fields have changed, their new values and their original values, and can store custom information in its Extended Properties collection. The DataSet can be exported to XML or created from an XML document, thus enabling increased interoperability between applications.
  • Constructing a DataTable using C#Feb 17, 2004. The ADO.NET DataSet is a data construct that can contain several relational rowsets, the relations that link those rowsets, and the metadata for each rowset. The DataSet also tracks which fields have changed, their new values and their original values, and can store custom information in its Extended Properties collection. The DataSet can be exported to XML or created from an XML document, thus enabling increased interoperability between applications.
  • DataSet in C#Feb 17, 2004. The ADO.NET DataSet is a data construct that can contain several relational rowsets, the relations that link those rowsets, and the metadata for each rowset. The DataSet also tracks which fields have changed, their new values and their original values, and can store custom information in its Extended Properties collection. The DataSet can be exported to XML or created from an XML document, thus enabling increased interoperability between applications.
  • Data Binding in DataGrid Control using C#Feb 17, 2004. The ADO.NET DataSet is a data construct that can contain several relational rowsets, the relations that link those rowsets, and the metadata for each rowset. The DataSet also tracks which fields have changed, their new values and their original values, and can store custom information in its Extended Properties collection. The DataSet can be exported to XML or created from an XML document, thus enabling increased interoperability between applications.
  • DataTable in C#Feb 17, 2004. The ADO.NET DataSet is a data construct that can contain several relational rowsets, the relations that link those rowsets, and the metadata for each rowset. The DataSet also tracks which fields have changed, their new values and their original values, and can store custom information in its Extended Properties collection. The DataSet can be exported to XML or created from an XML document, thus enabling increased interoperability between applications.
  • New Features in C# 2.0 : Part 2Mar 10, 2004. In this article I will talk about iterators, anonymous methods, and partial classes.
  • A Macro for Creating Properties from Private FieldsMay 12, 2004. Macros are a useful way of speeding up your coding efforts, however writing them can be a somewhat daunting task. Luckily, .NET gives you a pretty powerful recording feature for recording macros from key strokes.
  • Portal Development in ASP.NET 2.0Jun 04, 2004. The new security controls make authentication a breeze and web parts provides the user the means to customize content. Personalization and Membership features give developers a ready made framework for personalizing the site to suit individual user needs.
  • 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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