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.
  • 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.
  • A Database Access Class with Overloaded SELECT StatementsJan 24, 2001. A useful database access class with overloaded SELECT and other statements.
  • Directory Picker in C#Feb 07, 2001. A directory tree control let you select files or directories from any file structure on your computer system.
  • 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.
  • MP3 Tag EditorJul 16, 2001. MP3 Tag Editor is a simple GUI that allows MP3 ID3 (v1.1) tags to be created or edited.
  • Basic Database Operations in ADO.NETAug 08, 2001. This Article will show the basic database transactions select, insert update and delete.
  • Using Attributes in C#Sep 14, 2001. This article shows how to create custom attribute classes, use them in code, and query them.
  • Accessing Oracle DatabaseSep 21, 2001. This source code shows you how to connect to an oracle database and do operations such as select, insert, update and delete.
  • 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.
  • 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.
  • 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.
  • Application Data Utility ClassApr 24, 2002. Attached is a ZIP file containing the source-code and compiled DLL of the "Application Data Utility Class".
  • Assembly Browser: Browsing a .NET AssemblyMay 17, 2002. This program lets you browse an assembly and lists the methods and the parameter name and parameter type for each assembly.
  • 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.
  • MWControls v1.0.3.0May 05, 2003. This latest version includes Multi Select TreeView Control which lets you choose between a few different ways of selecting TreeNodes.
  • Installing a Service ProgrammaticallySep 04, 2003. With the arrival of .NET, creation of a windows service has become a piece of cake by just selecting Windows Service as project type in the New Project Dialog Box.
  • Real Life SQL and .NET: Part IIIJan 13, 2004. Welcome to the world of SQL and the huge, growing database technologies of today’s business all over the SQL world. By reading this article, we have begun accepting the knowledge that will soon be required for survival in today’s world of relational database and data management. Alas, for the reason that it is first necessary to provide a background of SQL and cover some preliminary concepts that we need to know, the majority of this article is text in paragraph format.
  • Real Life SQL and .NET: Part VIJan 13, 2004. Welcome to the world of SQL and the huge, growing database technologies of today’s business all over the SQL world. By reading this article, we have begun accepting the knowledge that will soon be required for survival in today’s world of relational database and data management. Alas, for the reason that it is first necessary to provide a background of SQL and cover some preliminary concepts that we need to know, the majority of this article is text in paragraph format.
  • Real Life SQL and .NET: Part IVJan 13, 2004. Welcome to the world of SQL and the huge, growing database technologies of today’s business all over the SQL world. By reading this article, we have begun accepting the knowledge that will soon be required for survival in today’s world of relational database and data management. Alas, for the reason that it is first necessary to provide a background of SQL and cover some preliminary concepts that we need to know, the majority of this article is text in paragraph format.
  • Real Life SQL and .NET : using SQL with C#: Part XJan 13, 2004. Welcome to the world of SQL and the huge, growing database technologies of today’s business all over the SQL world. By reading this article, we have begun accepting the knowledge that will soon be required for survival in today’s world of relational database and data management. Alas, for the reason that it is first necessary to provide a background of SQL and cover some preliminary concepts that we need to know, the majority of this article is text in paragraph format.
  • Setting Ink Overlay Properties in Tablet PCJun 02, 2004. In this article, I will write an application that allows us to set the Ink Overlay properties dynamically based on the values selected by the user.
  • Tablet PC Ink Editing Modes - Select and Delete InkJun 25, 2004. In my previous articles, I discussed how to use Ink and set its properties to draw on a Windows Forms and Windows controls. In this article, I will discuss some more features of Tablet PC Ink including selecting and deleting ink, Ink collection, and Ink object.
  • Moving to ASP.NET: Part 1Aug 24, 2004. The attached white paper, Moving to ASP.NET, examines trends in the adoption of ASP.NET, and provides guidelines for selecting the migration approach that best meets specific business needs.
  • 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.
  • 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#.
  • 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.
  • Selecting and Highlighting Multiple Columns in a Data GridJul 21, 2005. This article shows how to select multiple columns in a DataGrid and highlight the columns selected.
  • Multi Selection of DataGrid Rows without Ctrl ClickJul 31, 2005. This article shows how to select multiple rows in a DataGrid without using CRTL.
  • Simple Captcha with ASP.NetAug 01, 2005. A solution to block bots submitting to your database using C#.
  • Learning Visual Studio 2005 IDE - Document Outline in Windows Forms 2.0Aug 02, 2005. We all have seen Document Outline feature in Visual Studio 2003, which allows ASP.NET developers to select a control on a Web Form and in code editor, it would select the code respective to that control.
  • 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.
  • 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.
  • Select/Deselect all Checkboxes at Server side in ASP.NET using C#Jan 11, 2006. In this article we will see that how to select/deselect all checkboxes using C#.net server side code inspite of simple Javascript code.
  • 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.
  • Client-Side XML Data Islands Jun 17, 2006. This article demonstrates how to send xml data to the web client, filter records from xml at client side by using XPath expression and populate all products of selected category into product drop-down.
  • Building applications with DLinq DesignerJul 01, 2006. DLinq designer is the visual design surface to create the entity objects and bound the controls to the dlinq objects with relationships. We can easily create the windows form using the designer. The developer need not take more time to design the User Interface. The designer itself suggests you the controls suitable for the selected fields.
  • 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#.
  • 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.
  • Crystal report with Dynamic ColumnNov 03, 2006. The objective of this article is to provide a process which can be followed to develop a crystal report with dynamic columns using parameterized column fields and formula fields. Before going for this the developer has to decide the maximum number of columns he/she has to display and as per the no. of columns the size of the paper. The developer can define the size of the paper by selecting Printer Setup in File menu.
  • 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.
  • Strategy for querying Microsoft Access as an In-Memory Database using DataSets and ADO.NETJan 09, 2007. This article describes how you can read tables in from MSAccess up front in your application and then query the tables in-memory using some powerful features of the DataSet and ADO.NET
  • 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.
  • Simple Web and RGB Color Picker UtilityFeb 08, 2007. The article addresses the construction of a simple utility application useful for selecting an RGB or web color.
  • 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.
  • Bulk Uploader in ASP.NET 2.0Mar 28, 2007. The FileUpLoad control enables you to upload file to the server. It displays a text box control and a browse button that allow users to select a file to upload to the server.
  • 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.
  • Enhanced Oracle Explorer in C# and .NET Using Windows FormsApr 27, 2007. This application will allows to do multiple simple activities on oracle database like running select statements and getting selected procedure's definition simultaneously in a thread-based GUI.
  • Generate SQL Statements With Objects, Attributes and ReflectionJun 12, 2007. Create a SQL Command with SQL Statement and Parameters dynamically.
  • Manage Ads with AdRotator Control in ASP.NET 2.0Jun 15, 2007. The AdRotator control available in ASP.NET 2.0 allows you to manage and run ads on a website. The AdRotator control selects and displays an ad randomly each time a page is refreshed.
  • Select Items with Where in LINQ and C#Jun 21, 2007. This article shows how to select exact match and in between items from a collection using LINQ and C#.
  • Generic Data Layer - One time creationSep 06, 2007. This article will explain how to create a generic data layer that can be used with very less amount of coding. It is a known fact that, most of the time we create applications for Create , Select , Update, Delete. And every time, we end up with writing similar set of code for every execution of our stored procedures.
  • 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.
  • Selecting multiple Checkboxes inside multiple GridViewsOct 04, 2007. Ths article describes how to check/ uncheck multiple Checkboxes inside two or more GridViews on same page with Masterpage and usercontrols.
  • 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.
  • Find the First and Last Days of the Month with C#Oct 31, 2007. This article shall describe a very simple approach to finding out the first and last day of the month based upon either a selected date or selected month.
  • SQL Server backup utility using VB.Net and SQL-DMOFeb 05, 2008. This article allows you to take backup of any SQL Server database using SQL-DMO library. It allows you to take backup of selected tables, views or stored procedure.
  • Selecting Checkboxes inside the GridView ControlFeb 27, 2008. This article explains about how to select checkboxes inside the GridView control using javascript.
  • 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.
  • Killing Processes From a Windows Form Application in C#May 01, 2008. This article provides you a simple example of how to use the System.Diagnostics.Process library to display a list of running processes, and to select and kill processes by their process name and ID.
  • Generic Data Access using LINQ to SQL and C#Jul 22, 2008. This article discusses the construction of a generic data access layer built on top of a LINQ to SQL implementation.
  • 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.
  • Select, Add, Update, and Delete Data in a ASP.NET GridView ControlNov 23, 2008. This articles describes you how to view, add, update, and delete data using an ASP.NET 2.0 GridView Control in SQL Server database and C#.
  • OpenFileDialog in SilverlightNov 30, 2008. The OpenFileDialog allows users to select one or more files on the local computer or on a networked computer. This article demonstrates how to create and use an OpenFileDialog control in Silverlight using XAML and C#.
  • Silverlight Date Picker ControlDec 08, 2008. The DatePicker control in Silverlight 2 enables you to select a date by either typing it into a text field or by using a drop-down Calendar control.
  • 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.
  • Reading Text Files using OpenFileDialog in SilverlightFeb 04, 2009. In this article, you will learn how to select and read files using OpenFileDialog in Silverlight 2.
  • 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.
  • Recruiting the right candidateMar 07, 2009. Every team member either contributes to or erodes the team’s success. No matter how experienced you are, the art of selecting the right person is more art than science.
  • Using a Combobox to Select ColorsMar 19, 2009. This is a short article on how to use a combo box control to display and select all the named colors.
  • 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.
  • Master-detail data-binding using two Web pages in ASP.NET 2.0Apr 29, 2009. This article is intended to illustrate how to implement the master-detail presentation pattern using the ObjectDataSource components and two Web pages in ASP.NET 2.0. Master-detail presentation pattern is one of the techniques most used in enterprise applications intended to visualize one-to-many relationships, for example, let’s suppose the following a common business scenario where we want to display a list of subcategories of products, and allow the user select a particular subcategory in order to display the list of associated products.
  • 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.
  • Search and selection of data using LINQMay 27, 2009. In this article I will explain how you can use LINQ, when we should search and select some data according to parameters, defined by users.
  • 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.

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