C# Corner

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  • 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.
  • FileSharing Server in C# and .NETFeb 01, 2001. The server acts as a File Sharing Server, it listens for multiple clients to connect to it. The Clients have a option to either Download any of the Files available with the server for download.
  • 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.
  • 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.
  • Using/Debug Option During CompilationJul 15, 2001. This source code below is an an example of how to use /debug option during compilation.
  • MP3 Tag EditorJul 16, 2001. MP3 Tag Editor is a simple GUI that allows MP3 ID3 (v1.1) tags to be created or edited.
  • ASP.NET and VB.NET Error HandlingAug 24, 2001. ASP.NET and VB.NET both are providing excellent error handling options when compared with ASP and VB6. In VB.NET we can make use of the structured way of error handling with the Try & Catch statement.
  • 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.
  • Mapping Objects to Relational DatabasesNov 01, 2001. The application generates C# Class files for each table in a relational database. I have used Mysql and ODBC.NET for this project. The application only supports MySQL right now.
  • Adding Text Directly to Mobile Web FormsJan 24, 2002. We have seen in previous articles how to develop Mobile Web Forms using the Microsoft Mobile Internet Toolkit.
  • 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.
  • Application Data Utility ClassApr 24, 2002. Attached is a ZIP file containing the source-code and compiled DLL of the "Application Data Utility Class".
  • 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.
  • Robotics Game Using .NET LanguagesMay 28, 2002. It is often not easy to get to know new technologies like .NET if you don’t get introduced to in a work environment.
  • C# Style-SheetMay 31, 2002. This article contains a C# style-sheet for the GNU a2ps print utility. The style-sheet keywords, comments, preprocessor directives, and [] style attributes are pretty-printed in the typical a2ps fonts.
  • 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.
  • Calling Procedural COBOL from C#Sep 05, 2002. In a previous article we discussed how to call procedural based COBOL programs from VB.NET.
  • 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.
  • Invoking Unmanaged DLL Functions from Compact Framework for Pocket PC Jan 04, 2003. In this example we will use the Compact Framework to create a program containing a launch pad for the Pocket PC.
  • An XML-RPC Package for .NETFeb 06, 2003. This package provides a simple XML-RPC client and server for C# applications. It's pure C#, using .Net for networking and XML functionality.
  • Using C# and COM Interoperability to Extract from a UML tool into a Microsoft Word DocumentFeb 18, 2003. This article allows you to read the classes contained inside of WithClass 2000 into a Word Document using COM Interoperability for Word and COM Interoperability for WithClass and presents your classes in a kind of report.
  • Querying COM+ through Web ServicesMar 12, 2003. The most COM+ common administrative tasks (creating a COM+ application, installing/deleting a component, setting a component attribute) can be accomplished manually with the Component Services administrative tool from Management Console.
  • Accessing COBOL Properties with C#Apr 02, 2003. This article will review a new option for exposing those assets via the use of Properties.
  • 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.
  • Display Sorted Records in Crystal ReportsOct 03, 2003. This article shows you how to use Crystal Reports options to sort a report records.
  • An introduction to Matisse, a post-relational database for .NET - Part 1Mar 06, 2004. When it comes to database for .NET, there are several options in addition to the well known ones such as SQL Server or MySQL. One of them is Matisse, a post-relational database by Matisse Software.
  • Advanced Notepad in C#Apr 13, 2004. This is an advanced version of Notepad that allows you to search, replace, change background and foreground text color. It also provides registry editing options.
  • Learning Visual Studio 2005 IDE - Main IDEJun 07, 2004. In this article of Learning Visual Studio 2005 IDE series, I will explore some of the designer features and the breakdown of the classes of a Windows Forms project.
  • Crystal Reports - Geterogeneus databases: SQL Server, Oracle, Unidata, BtrieveAug 24, 2004. Crystal Reports is the most flexible tool on the market and it has market recognition. Multiple software vendors offer Crystal Reports as the main reporting tool: Microsoft, Best Software, Oracle to name a few. In this article, you learn some tips on using Crystal Reports versus other options.
  • Using Web Browser Options in C# and VB.NETSep 21, 2004. I wrote this article in Sept 2001 in response to a question on discussion forums - how to create a Web Browser in C#? Recently, I got a question on how to use Browser's Save As option programmatically. This article explains how to use Web Browser ActiveX to your project to developer your own customized Web Browser and use its options.
  • Build a .NET Solution or Project from the Command Line Sep 27, 2004. Devenv allows you to set various options for the integrated development environment (IDE) as well as compile, build, and debug projects from the command line.
  • 3D Real-Time Stock Exchange Quote Stream Ticker in GDI+ and C#Oct 04, 2004. This article represents 3D Real-Time Stock Exchange Quote Stream Ticker version 1.0. The big option here is internal email-alert control with built in POP3 and SMTP protocols. This control starts when some condition is execute. You can save current quote in some graphics format and print it.
  • Microsoft CRM Customization: MS Exchange Transport SMTP Event SinkOct 18, 2004. Microsoft CRM has variety of customizations options and tools. The official and the most popular is Microsoft CRM SDK: collection of C#.Net and partially VB.Net classes, methods and code samples.
  • Coloring the Console in C# Oct 25, 2004. When working with console applications in C#, you always see a black and white screen. What if we want to change the background color of the console? We can change the foreground and background color of our console application by using win32 API SetConsoleTextAttribute().
  • Moving C Structures into .NET with Custom MarshalingDec 17, 2004. Microsoft provides several attributes for marshaling C to C#. In our example we will take the case where we have hundreds of structures and only a few API calls, so we only need to generate the marshaled code for the structures.
  • Performance Improvement in ASP.NET Using CachingFeb 01, 2005. ASP.NET provides caching at several levels for you to leverage and improve the responsiveness of your application by storing the page output or application data across HTTP requests and reuse it. This allows the web server to take advantage of processing the request without recreating the information and thus saving time and resources.
  • Web Based Chat ApplicationMar 15, 2005. The article explains about devloping a chat Solution in ASP.Net / C# which is differnt than any of the available solutions and works under any firewall and browser settings.
  • Creating simple Add-in for Visual Studio.NETMar 16, 2005. An add-in is a tool that you create programmatically by using objects, methods, properties, collections in .NET's extensibility model. This compiled application enables you to automate the difficult and tedious tasks within the visual studio integrated development environment (IDE).
  • Posting to another .aspx using ASP.NET Mar 19, 2005. ASP.NET wont allow to post back to another aspx page. It will post back to itself. If you specify action attribute it will ignore it. If you omit the method attribute, it will be set to method="post" by default.
  • Comparing Conditional Attributes in C/C++ versus C#Apr 09, 2005. This article compares conditional attibuting in C/C++ and C#.
  • Generic Data Providers VS Specific Data ProvidersApr 23, 2005. This article explains what are the issues or options we have if we use generic data objects such as IDbcommand, Idbconnection etc in place of specific data objects such as SqlCommand or SqlConnection.
  • Integration of InfoPath with SharePointApr 28, 2005. InfoPath is based on industry-standard Extensible Markup Language (XML). Extensible Markup Language (XML) is a condensed form of Standard Generalized Markup Language (SGML) that enables developers to create customized tags that offer flexibility in organizing and presenting information.
  • IM Chat Interface for C# and .NETJun 26, 2005. This article describes a way to create a colorful chat interface for instant messaging. In this chat interface you can use html and emoticon tags to display colorful text and bitmaps in order to give you a richer chat experience.
  • Learning Visual Studio 2005 IDE - Integrated FxCop and Accessibility OptionsJul 23, 2005. Visual Studio 2005 IDE brings you many new and updated features and Project Properties dialog is one of the areas where you will see some new additions. In this article, I will discuss Accessibility and FxCop features of Project Properties dialog.
  • Simple Captcha with ASP.NetAug 01, 2005. A solution to block bots submitting to your database using C#.
  • Using Snippets in Visual Studio 2005Nov 10, 2005. Visual Studio contains several built-in intellisense code snippets. Snippets are like templates and can be described completely in XML. If you understand the snippet xml schema, you can easily begin to create your own snippets.
  • Attributes in C#Feb 20, 2006. In this artilcle, we will see what the attributes are and why should we use the attributes in our applications?
  • Create Meta Tags Programmatically in ASP.NET 2.0Apr 07, 2006. In ASP.NET, we had an option to add head tags in HTML where we could define our Meta tags like keyword and description but in ASP.NET 2.0 if we use master page inheritated page then there is problem to add meta tags. This article explains how you can add meta tags in ASP.NET 2.0.
  • Application Scheduler Service Using C#.Net And XMLMay 29, 2006. This is an application scheduler that is implemented as a Windows Service, similar to the Windows Task Scheduler - but simple, as it has fewer configuration options and it uses XML to store and retrieve data.
  • Assembly Viewer and Assembly Conflict Viewer in ASP.NETAug 10, 2006. This article show how to view assembly attributes and conflicts in ASP.NET page using C#.
  • Cross Page Postback in ASP.Net 2.0Aug 11, 2006. In ASP.Net 2.0, cross-page post backs allow posting to a different web page, resulting in more intuitive, structured and maintainable code. In this article, we will explore the various options and settings for the cross page postback mechanism.
  • Calculating Date Difference in C#Sep 14, 2006. This article introduces the various options for calculating the date difference in C#.
  • Pull a column value from another list in your site in Sharepoint Portal ServerSep 21, 2006. In document and form libraries, you can create custom columns or metadata properties and interestingly, you can autopopulate these columns with data that can be hardcoded or extracted from other lists that are part of the same site where your document library is located.
  • Tip: How to Print a Crystal Report Programmatically in ASP.NET?Oct 16, 2006. You can print a Crystal Report using print option of Crystal Report Viewer. However, there are occasions when you want your application to print a report direct to printer without viewing the report in Crystal Report Viewer.
  • Tip: How to Export a Crystal Report to a PDF file Programmatically in ASP.NET?Oct 23, 2006. You can export a Crystal Report to various formats using CrystalReportViewer’s Export option. However, there are occasions when you want your users to see the report direct in PDF format in the browser as soon they click the Report button in your application.
  • Flash Player Custom Control for ASP.NET 2.0Dec 05, 2006. This article describes a quick and simple approach to creating a custom web control used to display shockwave flash files within an ASP.NET page. Whilst the article and demonstration project are focused upon displaying a shockwave flash (SWF) file, the basic idea is applicable to any sort of object that you may wish to embed within an ASP.NET 2.0 page.
  • Extending the ASP.NET ImageButton ControlDec 18, 2006. This article describes an easy approach to extending an existing ASP.NET control; in this example, the standard toolkit’s Image Button control is extended to support roll-over effects. Given the standard control already contains existing support for both server side click events and client click events, the control is well furbished prior to the addition of the roll-over effect.
  • ASP.NET 2.0 Visio Custom ControlJan 15, 2007. This article describes a quick and simple approach to creating a custom web control used to display Microsoft Visio files within an ASP.NET page using Internet Explorer.
  • ASP.NET HTML Postback Custom ControlMar 01, 2007. Web form controls do not offer a complete solution to ASP.Net design and hence HTML tags are still required. Occasionally the need exists for a postback from an HTML tag, this article presents a Custom Control to address this requirement.
  • Extending ASPX Panel Control to produce Rounded CornersMar 05, 2007. This article shows how to create a custom control which encapsulates scripts. Also shows how to add method attributes to interact with VS Designer and ToolBox as well as providing intellisense dropdowns.
  • TreeView Control in C#Apr 16, 2007. This is an article addressing some of the basics of working with a TreeView control; the article will address dynamically adding TreeNodes to a TreeView control, searching the nodes to find and highlight a single node or a collection of nodes.
  • Generate SQL Statements With Objects, Attributes and ReflectionJun 12, 2007. Create a SQL Command with SQL Statement and Parameters dynamically.
  • Easily Find Tags and Values in a Large Xml Document Using XmlTextReader in C#Sep 20, 2007. In this article you will learn how to find tags and values in a large xml document using XmlTextReader in C#.
  • AJAX AutoCompleteExtenderOct 04, 2007. In one of the Ajax project while using <ajaxToolkit: AutoCompleteExtender> I was getting following error: Error Creating control - autoComplete1. This control cannot be displayed because it's tag prefix is not registered in the web form.
  • Read Asp.net Request Param and Session dynamically into propertiesOct 04, 2007. This Article shows how you can use Attributes and Reflection to dynamically populate property with value from param, session or context without writing any addition code. I have used this technique in past and I hope you will also find it useful.
  • Configuration Sections; Introducing the Custom Configuration Section Concept: Part IApr 14, 2008. Custom sections of an ASP.NET Configuration File are customized sections that a developer configures by himself. In this case, the developer also sets their attributes and elements to suit special application needs in terms of settings.
  • Configuration Sections- Create a configuration section group and retrieve configuration information from it: Part IVApr 18, 2008. In the previous article , we demonstrate how to create a custom section with custom attributes using the ConfigurationSection class and IConfigurationSectionHandler interface.
  • Access AssemblyInfo File and Get Product InformationsApr 22, 2008. This article tells you that .Net have the assemblyInfo file for every project and also have custom attributes to access the asseblyinfo file attributes.
  • Handle resource files - Generate a class with strong typed properties using StronglyTypedResourceBuilder: Part VIISep 03, 2008. You can generate a class with strongly typed properties issued from a given resources file elements or attributes using other way than in Part VI handle resource files where the resgen.exe is invoked to achieve such task.
  • About Development on Two-Way RTF to XML/XHTML Converter Components and ServicesSep 15, 2008. Microsoft introduced the Rich Text Format for specifying simple formatted text with embedded graphics. Initially intended to transfer such data between different applications on different operating systems, today this format is commonly used in Windows for enhanced editing capabilities. The XHTML to RTF converter consists in an XSL stylesheet for parsing XHTML tags and generating their RTF equivalents.
  • Introduction to Enterprise Library: Part IIJan 19, 2009. This article explains Attribute based validation in a Validation Application Block.
  • Introduction to Enterprise Library: Part IIIJan 21, 2009. This article explains about Attribute based Validators and Rule sets of Validation Application Block.
  • Introduction to Page Layout using DIV elementFeb 03, 2009. This article explains about benefits of using DIV tag over TABLE in page layout design.
  • Aspect Oriented Programming in C#.NET: Part IIFeb 19, 2009. This article is the continuation of the Part I. We will continue with the same problem of the Customer Sales application discussed in Part I.
  • Play a Flash Movie within a Div tagMar 06, 2009. This article and attached code snippet shows how to play a flash movie within an HTML DIV tag.
  • Parsing Markup to represent it as ObjectsApr 01, 2009. Here I place a project I made that takes any markup and turn it in form of a MarkupDocument with elements and attributes, content etc.
  • Setting Null Value in an Optional Non-identifying Relationship Using ComboxBoxMay 06, 2009. The most common relationship in any data model is the one-to-many non-identifying relationship. Non-identifying relationship implies weak dependency relationship between parent and child entities. There are two kinds of non-identifying relationships, including optional and mandatory. The necessity of the parent entity is "exactly one" and "zero or one" in the mandatory and optional non-identifying relationship respectively. One problem I’ve tackled in many of my enterprise application is the presentation of complex data relationship such as optional non-identifying relationship using data binding techniques in Windows Forms applications. In this article, I will illustrate how to face this problem.
  • Cascading Dropdown & Multiselect option in ListBox using WPFMay 10, 2009. Many times we come across the situation where we need to populate the dropdowns based on the value of another dropdown or combo.
  • Setting Null Value to an Entity Property Through Textbox ControlMay 12, 2009. In this article, I want to document a bug in Visual Studio. NET concerning to setting a null value to entity property’s through a Textbox control. There is a common scenario to have an entity type in your data model where some attributes are optional. When you develop a rich client application using the Windows forms, data binding techniques and a Textbox to enter the simple data, and you want to set null the optional attributes of the underlying data source by leaving in blank the Text property of the Textbox control; then there is a missing feature for the Formatting and Advanced Binding dialog box for null values. They should have a checkbox there to allow people to use blank as null. In this article, I will show one simple solution to this bug.
  • New data input controls for mobile developmentMay 29, 2009. Data input is part of every mobile application nowadays. But it is the data input that causes complicated situations for programmers due to relatively limited options of mobile devices.
  • MVC Declarative BindingJun 08, 2009. One of the things that makes the bar to implement any “MVC-ish” pattern high is the tremendous amount of plumbing required just to get started in order for the different entities to communicate state changes. This article introduces a utility library that can be used to declaratively bind the model and view encapsulating all the wiring required and making implementation much easier.
  • Simple 6 steps to use stored procedure in LINQJul 08, 2009. This is an extremely small article which describes how to flourish LINQ objects using stored procedure. What provoked me to write this article is the ‘ExecuteMethodCall’ function which helps to execute stored procedures in LINQ. As this is a protected function it changes the way you architect the DAL using ‘DataContext’ class and probably you would like to tweak and consider some options here. You can see more details of it when you read through the steps below. I am writing a huge series of LINQ FAQ and these small articles form small sprints to complete the huge FAQ series. I hope you enjoy it.
  • Data Contract Hierarchy in WCFJul 10, 2009. This article will explain : Data Contract hierarchy,How base class and sub class are getting exposed in WCF?,What is Known Type attribute and Mixing of sterilization and DataContract
  • Various Options in Hosting of WCF ServicesJul 13, 2009. This article is targeted to very new WCF developer. This will explain different Hosting options.
  • Usage of location tag in ASP.Net applicationJul 31, 2009. This article describes the use of location tag in ASP.Net application.
  • WCF FAQ: Part 5 - TransactionsAug 09, 2009. This is my 5th WCF FAQ article. This article is completely dedicated to WCF transactions. In this article we will understand the WCF transaction protocol, two phases in WCF transaction, transaction options and finally end up with simple sample for WCF transaction.
  • What is the AutoEventWireup attribute in ASP.NETSep 07, 2009. In this article I will explain about AutoEventWireup attribute in ASP.NET
  • Client execution from server controlsSep 09, 2009. In this article I will expalin how to execute client script from server controls.
  • How to use mobile device's camera and microphone in business applicationsOct 13, 2009. This article uncovers the utilization of mobile device's built-in camera and microphone in a photo documentation application that enables creating a voice tag.
  • Hello C#Nov 05, 2009. This short article is based on the classic “Hello, World” sample program familiarizes you with the language syntax and introduces the command line compiler.
  • C# Command-Line Compiler OptionsNov 08, 2009. In this article let's address each of the compiler options available in C#.
  • XML OverviewNov 14, 2009. In this article I will explain XML and how to write an XML code.
  • XML NamespacesNov 18, 2009. In this article I will explain you about XML namespace, DTD and schemas and Extensible Hyper Text Markup Language.
  • An XML Document and its ItemsNov 19, 2009. In this article I will explain you about XML Document and its Items.
  • Reading XML Documents using C#Nov 23, 2009. In this article I will explain you how to read an XML document in C#.
  • Attributes in C#Nov 24, 2009. In this article I will explain about attributes in C#.
  • Attribute or Styles in GDI+ Dec 21, 2009. In this article I will explain about Attribute or Styles in GDI+.
  • Debugging and Tracing in C# Feb 04, 2010. In this article I will explain you about the Debugging and Tracing in C#.
  • Transparent Brushes in WPFFeb 21, 2010. All elements in XAML including all brushes have an Opacity attribute that defines the transparency of an element. This article demonstrates how to use Opacity to implement transparent brushes in WPF using XAML.

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