C# Corner

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  • Remoting in .NETApr 05, 2001. .NET Remoting provides a way for application in different machines/domains to communicate with each other.
  • Quote ResponderMay 09, 2001. The program will periodically check your mail for incoming email requests for a stock quote.
  • 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.
  • Active Directory Sample IAug 23, 2001. This sample shows how to access Active Directory information in a Windows 2000 domain.
  • 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.
  • Checked ListBox Control In C#Oct 18, 2001. The following source code will provide the use of CheckedListBox Control In C#.
  • 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.
  • Playing with DataGrid ControlJan 08, 2002. The article gives a user the overview to show the importance and versatility of the DATAGRID control.
  • 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.
  • WhoIs in ASP.NETApr 15, 2002. Quite often you want to know who owns a particular domain. To obtain the registry information, you go to the respective registry and start a so called WHOIS query (lookup).
  • XML Schema ValidatorApr 16, 2002. The XML Schema Validator checks if a given XML document is well formed and has a valid schema model.
  • 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.
  • Spell Check Web ServiceMay 31, 2002. In this example we will create a Web Service which provides spell check functionality.
  • 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.
  • 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.
  • 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.
  • 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.
  • Cryptography in Microsoft.NET Part I: EncryptionDec 12, 2002. Microsoft .NET has pre-built solutions to all of these in each application domain, viz., ASP. NET, Web Services, Serviced Component etc. It enables building secured application by simple configuration as in ASP.NET to full fledged programmable security as in code access security and Cryptography.
  • Mail Checker 1.0Jan 16, 2003. In this article, author shows how to create a program to check your IMAP mail.
  • 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.
  • 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.
  • 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.
  • Masked TextBox ControlJan 26, 2004. This Masked Edit TextBox intelligent user control enhances the function of TextBox control, which can mask the Date, IP Address, SSN, Phone number, digit, decimal and check the validation, automatically set delimit location.
  • Business Process Execution Language for Web Services 1.0Mar 11, 2004. Web Services use a loosely coupled integration model to allow flexible integration of heterogeneous systems in a variety of domains including business-to-consumer, business-to-business and enterprise application integration.
  • Get your System Information using C#May 05, 2004. In this article I will discuss how you can get information about your system such as available operating system, hardware, and domain.
  • Download Files using HTTP and Proxy Server in C#Sep 21, 2004. This article explains how to pass proxy server network credentials when downloading files using HTTP.
  • ClickMania GameDec 21, 2004. This is an old game, first implemented in 1996 or so... It has a great addictive power. You will quickly find out the rules. I used the winmm.dll library for playing sounds, the picturebox.Paint event to draw bitmaps in a Picturebox and a recursive function to check the balls next to each other for the colors.
  • Checked List Box Sample in C#May 31, 2005. This example shows how to use CheckedListBox control in C# and Windows Forms.
  • Adding & Retrieving items from listbox and check list boxJun 02, 2005. The attached source code shows how to add and retrieve items of Windows Forms ListBox and CheckListBox controls.
  • Accessing Registry using ASP.NETJul 08, 2005. In this article, we will see how to access the registry using ASP.NET. We will see one simple example to check where Visual Studio installed on our machine.
  • 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.
  • A Loader and Game Pad for Playing SudokuJan 13, 2006. This C# application will allow you to load existing Sudoku games, manually create your own games, save, print, and check Sudoku puzzles, and more. The article also describes how to use the XmlDocument class to persist Sudoku templates and games in progress.
  • Using Management Objects to check Online PrintersJan 20, 2006. This article shows to check online printers using management objects.
  • How to Create Application Domain Using Framework 2.0Feb 14, 2006. This article will describe members used to create appdomain in runtime.
  • ASP.Net Page Life CycleMay 16, 2006. This article explains simple ASP.NET web page execution in depth.
  • Six Java features C# developers will kill for...Jul 06, 2006. Not everything on the .NET framework is perfect, and Microsoft still has more improvements to implement. This time we will look at six features available to Java developers but unfortunally absent from C#.
  • Tip: How to Suppress if Duplicate a Memo Field in Crystal Reports?Jul 21, 2006. If you create a report with memo field in Visual Studio 2003 and check Suppress if Dupliate checkbox, you will notice the suppress on memo field does not work. This tip shows how to do it.
  • System Date Time Check FormatOct 18, 2006. This program executes the system date time format. Is it in dd/mmm/yyyy or other format and the which cultuerInfo is the system running on.
  • How to Execute an Application in a Remote Application DomainJan 18, 2007. This article explains executing an application in a remote application domain
  • Stock Tracker Custom Control in C# .NETMar 07, 2007. This article describes the construction of a custom control used to check stock prices as made available through a public web service.
  • How do I Check for Duplicate Items in a ListView?May 09, 2007. This "How To" Shows you how to Check for Duplicate Items in a ListView
  • Spell check enabled RichTextBox custom controlMay 16, 2007. This article describes a quick and simple approach to applying a spell check function to the rich text box control and bundling both features into a single custom control. Of course there is nothing novel or particularly interesting about performing spell checking upon a selection of text using the Word.DLL.
  • AppDomain concept in ASP.NetJul 12, 2007. This article explains about the concept of an Application Domain which is shortly known as AppDomain.
  • WPF Database Communication Adding new Record to the DatabaseSep 06, 2007. WPF Database communication Adding new record to the database (XAML-MS-Access), I have a XAML form with FirstName, LastName, Email & Contact fields in it on click of submit button it will first check if the same email address is exists in the table else it will add new record I have made use of OleDbTransaction to perform add functionality.
  • 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.
  • Selecting Checkboxes inside the GridView ControlFeb 27, 2008. This article explains about how to select checkboxes inside the GridView control using javascript.
  • Checking previous instance (single instance) of an C# windows application, also setting MDI child form to a MDI parentSep 04, 2008. In this article I will describe how to check previous instance (single instance) of an C# windows application and also whether a MDI child is set to a MDI parent
  • Test for User Group Membership in ASP.NET C#Oct 13, 2008. This article describes a simple approach to determining whether or not a logged in user is a member of a group within the context of an asp.net web based application.
  • Test for Desktop User Group Membership with C#Nov 10, 2008. This article describes a simple approach to determining whether or not a logged in user is a member of a group within the context of a desktop application. The approach shown relies upon the use of the user’s current Windows identity.
  • Checking Nullable Values in .NETNov 28, 2008. This tip shows how to check values retrived from a database are null or not.
  • CheckBox in SilverlightNov 29, 2008. This article demonstrates how to create and use a CheckBox control in Silverlight with the help of XAML and C#.
  • Coding Better: Programming From the Outside In. Part IJan 25, 2009. Modeling an API for a domain is a difficult task. The trick is to get the correct level of encapsulation/abstraction while making the API easy to understand and consume. If we can model our domains at the same level that we understand them linguistically then we are 90% of the way there. This article discusses a programming methodology by which we can build a concise interface that will provide a consistent level of abstraction and is easy to code against.
  • Check Internet ConnectionJan 29, 2009. To check for an Internet connection in .NET, we can use GetIsNetworkAvailable method defined in the System.Net.Network-Information namespace.
  • Unit Testing with VS 2008 Team editionFeb 15, 2009. Unit tests allows the developers and testers to check the logical errors in the methods of classes in C# and VB.NET Projects.Unit test can be created once and can be run every time that source code changes.Unit test cases make sure that no bugs are introduced when you write the new code.
  • Business Process Modeling TechniquesApr 03, 2009. In this article, we’re going to illustrate principles and techniques to model business processes and check the underlying design in order to avoid certain anomalies.
  • WCF and SilverLight With Cross Domain IsssueApr 15, 2009. This tutorial will expalin how to consume WCF in SilverLight, solve a Cross Domain issue and host a WCF service in IIS.
  • Implementing optimistic concurrency control in ASP.NET 2.0May 05, 2009. This article is intended to illustrate how to implement optimistic concurrency control in ASP.NET. Optimistic concurrency control is a mechanism to check when multiple users concurrently access and change a common data item; they don’t overwrite one another’s change. I’m going to illustrate a common scenario in an enterprise application and to show how we can solve the concurrency problems using optimistic concurrency control and the underlying implementation using Microsoft technologies.
  • Implementing business rules using customized DataSet objectsMay 15, 2009. Information systems contain and enforce rules about the business they support. A rule is constraint which describes the way how objects are to behave. Field-level validations are checks that pertain to the property values of the underlying business entities. For example, a field must be 50 characters or less in length or some fields are required while other fields are optional as well as some fields must be greater than a specific value.
  • Rectifying MACHINE CHECK EXCEPTION Error Message in Windows XPMay 18, 2009. A STOP error message in Windows XP is typically caused after your computer encounters a serious system error. Two major consequences that you might face after the occurrence of a STOP error can be unbootable hard drive and data inaccessibility.
  • How to Check if there is any Alphabet or Non Alphanumeric Character in a StringJun 23, 2009. This article gives you an idea about how to check if there is any alphabet or non alphanumeric character in a sttring just with the help of one metthod using regular expressions in C#.
  • Tip: How to Highlight Rows in a DataGrid Using a CheckBoxJun 25, 2009. This code snippet shows how to select or highlight selected rows in a DataGrid based on a CheckBox column similar to yahoo or hotmail emails.
  • How to check someone else's checked out code into CVSJul 26, 2009. If you copied the source code you're working on, from another developer on your team and you you're trying to check it in, into CVS, and you can't, because CVS won't let you, this article is just the right solution to your problem.
  • Customizing Check Box Control in Silverlight 3 using Blend 3Aug 05, 2009. This article shows how to customize Check Box control in Silverlight 3 using Blend 3.
  • Sending mails with attachments using GmailAug 14, 2009. Many times I came across the question that how can we send mails with some files as attachments and in continuation do we reaky need to buy some domain of our's to send mail or there is a domain using which we can send mails using gmail or yahoo or hotmail accounts. so the answer. So I decided to write this article which will help in solving the above quest.
  • Introduction to the Visitor PatternAug 22, 2009. The power of adding a functional extensibility point to our classes via the visitor pattern is often overlooked. Using a visitor pattern is a very effective means of providing a nice boundary around a set of core classes while at the same time allowing for functional change. This article will demonstrate how the visitor pattern can be used as an extensibility mechanism and provide a boundary to keep core domain classes from getting cluttered.
  • Checking a HTTP proxy status and typeOct 18, 2009. This article demonstrates how to check if a HTTP Proxy is working and if its anonymous or transparent using C#.
  • Inline Editing and Updating in GridView with check boxJan 02, 2010. In this article you will learn how to use Inline Editing and Updating in GridView with check box.
  • PerformanceCounter in C# Feb 10, 2010. In this article I will explain you about the PerformanceCounter control in C#.
  • Checking Improper DISPOSE in assemblies using SharePoint APIFeb 23, 2010. In this article I will show how to check improper disposing of instance of SharePoint classes in an assembly.
  • Is Operator in C#Feb 24, 2010. The Is operator in C# is used to check if a type of an object is compatible with the other type. If type is not compatible, you will also see C# compiler will through an error in Visual Studio IDE.
  • Application Domains in C# Mar 11, 2010. In this article I will explain you about Application Domains in C#.
  • Accessing domain user properties from a Sharepoint siteMar 13, 2010. This article describes a simple approach to determining whether or not a logged in user is a member of a group within the context of a Sharepoint Web based application.
  • Spell Checker in WPFApr 27, 2010. In this article I am going to show how we can check our word spelling in WPF.
  • RIA Services with Silverlight 4: Part IMay 03, 2010. This article will show you how to use Domain Service Class using Silverlight business application with ADO.NET Entity Data Model.
  • CheckBox in C#Jun 03, 2010. A CheckBox control allows users to select a single or multiple options from a list of options. In this article, I will discuss how to create a CheckBox control in Windows Forms at design-time as well as run-time. After that, I will continue discussing various properties and methods available for the CheckBox control.
  • How to get System Environment information in WPFJun 07, 2010. This article demonstrates how to get system environment information like Operating System,.NET Version, Machine Name, Username, Domain Name, Directory Name, Command Line using wpf.
  • Check/Un-Check checkboxes items in ASP.NET DataGrid using JavaScriptJun 10, 2010. In this article we will see how to check and un-check checkboxes items in ASP.NET DataGrid using JavaScript.
  • CheckBox in C#Jun 11, 2010. A CheckBox control allows users to select a single or multiple options from a list of options. In this article, I will discuss how to create a CheckBox control in Windows Forms at design-time as well as run-time.
  • DomainUpDown in C#Jun 21, 2010. A DomainUpDown control allows users to provide a spin (up/down) interface to move through pre-defined strings using up and down arrows. In this tutorial, we will see how to create a DomainUpDown control and use it in a Windows Forms application.
  • How to change the existing Name ServerJul 06, 2010. This article will demonstrate how to change the existing Name Server and details about Domain Control Panel.
  • Basics of Data Communication: Part 3Jul 15, 2010. This article will explain, Data Transmission, configuration, Time Domain Concepts, Frequency Domain Concepts, Why Digital Communication, Bandwidth, Data Rate, Channel Capacity, Error Rate, Noise, Nyquist Sampling Rate, Shannon Channel Capacity, Line Coding, Modem and Digital Modulation etc.
  • Checking if User is connected to Internet or Not using Win32 API and C#Aug 07, 2010. Article Checking if User is connected to Internet or Not using Win32 API and C#
  • Basics of C#: Checked and Unchecked ConversionsAug 10, 2010. In this article, I will discuss about Checked and unchecked keyword and conversions in C#.
  • Word 2007 Spellchecker Functionality in C#Aug 15, 2010. In this article you will learn how to spelling checking using the word 2007 spellchecker functionality in c#.
  • Consuming URL Shortening Services – bit.lySep 01, 2010. This is a very hot article that you can’t leave without checking it first. This article is talking about the most popular and powerful URL shortening service ever, bit.ly.Today, we are going to talk about bit.ly API, its functions, and how you can access them from your .NET application.Don’t forget to download the sample code at the end of the article.Let’s go!
  • WCF 4.0 Service Consumed in Silverlight 4.0 with Cross DomainSep 08, 2010. This article will explain how to call WCF 4.0 service hosted in IIS 7.5 in a Silverlight application.
  • Export DataSet to ExcelSep 15, 2010. Exporting to single sheet excel file is easier and it requires only few line of codes. Exporting to Multiple sheet is little bit complicated and it requires little bit of extra effort. Mostly we will go for third party controls or dlls to achieve that. Here is the simple way to export your dataset to multiple sheets in an Excel file.
  • Login Page in Expression BlendSep 16, 2010. In this article I have designed login page, which can be used by the user of the site freely.
  • 3 Ways of Doing Optimistic Locking in .NETSep 18, 2010. In this article we will touch base 3 ways of doing optimistic locking i.e. Using ADO.NET dataset, SQL Server Timestamp check and old / new value check.
  • Performance of If-else if tree vs. Switch (multiple variables) in C#Sep 28, 2010. This article demonstrates multiple ways to implement if-else if tree, when there are multiple values to check, and compares their performance to a switch.
  • Checkboxes in HTML Table with JQuery: Checked All, Unchecked, Enable, Disable operationNov 01, 2010. This article shows how to have Checked All, Unchecked, Enable, Disable operation in checkboxes in HTML table with Jquery.
  • Determine Whether a Column is a MultiValued Lookup Column in SharePointJan 03, 2011. This article is about how to check a column to determine if it is a MultiValued Lookup column in SharePoint.
  • Dynamic generation of a Check Box ListJan 07, 2011. In this article you will learn how to use dynamic generation of a CheckBoxList in C#.
  • Understanding XAML Namespace in SilverlightJan 21, 2011. Extensible Application Markup Language (XAML) is a markup language used to instantiate .NET objects. Although XAML is a technology that can be applied to many different problem domains, it was initially designed as a part of Windows Presentation Foundation (WPF).
  • How to check the crawl status values for a Content Sources in SharePoint 2010Jan 27, 2011. In this article we will be seeing how to check the crawl status values for content sources in SharePoint 2010.
  • CheckBoxList in WPFFeb 26, 2011. This Article explains how to create a CheckBoxList and how to get the Text and Value of a checked CheckBoxListItem in WPF.
  • How to check the site is a valid hub site and content type in the hub in SharePoint 2010Mar 02, 2011. In this article we will be seeing how to check whether the site is a valid hub site and how to check whether the content type in the hub site is published or not.
  • Versioning Settings for SharePoint list using powershellMar 07, 2011. In this article we will be seeing how to configure versioning settings for SharePoint list using powershell.

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