C# Corner

Resources  
  • Copying and Pasting on Clipboard using C#Feb 23, 2001. If you use CTRL+C, some data or files are copied to a system clipboard and stored in system memory and when you use CTRL+V, the data is copied back to wherever you paste it. The Clipboard class provides functionality to place and retrieve data from the system clipboard. Usually
  • Effective C#: Working with StringsMar 12, 2001. Using string might degrade the performance of your application. This article explains about what precautions you should take when you are going to use strings in your application.
  • Compilation and Runtime Execution of a C-Sharp ProgramApr 10, 2001. C-Sharp (C#) is a strongly typed object-oriented programming language designed to give optimum composition of simplicity, expressiveness and performance.
  • Quote ResponderMay 09, 2001. The program will periodically check your mail for incoming email requests for a stock quote.
  • Working With Process ClassMay 22, 2001. This article is aimed at introducing the novice .NET developer to the basic usage of System.Diagnostics services included in the .NET BCL.
  • 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.
  • Screen Capturing a Form in .NET - Using GDI and GDI+Sep 15, 2001. This article shows way to do form capture in GDI is to get the device context to the screen and bit blast it to a Bitmap in memory.
  • 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#.
  • Pointers in C#Oct 25, 2001. C# also supports pointers in a limited extent. A pointer is nothing but a variable that holds the memory address of another type. But in C# pointer can only be declared to hold the memory address of value types and arrays.
  • 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.
  • Boxing and Performance of CollectionsMar 14, 2002. In this article, I will compare some performance issues of values and references types during boxing and unboxing operations.
  • 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.
  • Memory GameMar 19, 2002. This is a memory game where you can use your favorite pictures (.bmp, jpg, gif).
  • Saving and Reading Object to/from a DatabaseMar 25, 2002. An object is a memory stream, which is hard to write using the normal methods. In this article, I show how you can save objects in a database and read back from the database.
  • .NET Remoting: The Interface ApproachMar 26, 2002. .NET Remoting provides a powerful and high performance way of working with remote objects. Architecturally, .NET Remote objects are a perfect fit for accessing resources across the network without the overhead posed by SOAP based Web services. .NET Remoting is easier to use than Java's RMI, but definitely more difficult than creating a WebService. In this article, we will create a remote object, and access this object using the Interface.
  • .NET Remoting: The Simple ApproachMar 26, 2002. .NET Remoting provides a powerful and high performance way of working with remote objects. Architecturally, .NET Remote objects are a perfect fit for accessing resources across the network without the overhead posed by SOAP based Web services.
  • Asteroids in C#Apr 04, 2002. As my first experiment in a game design, rather than using a DirectX wrapper, I decided to explore the functionality of GDI+. GDI+ has lot of nice features to offer but performance wise it is slow. So GDI+ may not be a good idea to develop practical fast paced games. This game also includes sounds.
  • XML Schema ValidatorApr 16, 2002. The XML Schema Validator checks if a given XML document is well formed and has a valid schema model.
  • 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.
  • 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.
  • ADO.NET From Windows DNA's PerspectiveJun 12, 2002. Windows DNA is a framework to build multi-tier, high performance, scalable distributed applications over the network. This article takes a Windows DNA perspective and compares how ADO.NET fits in Windows DNA.
  • 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.
  • Remoting Calls RecommendationsSep 19, 2002. The goal of this article is not to describe remoting technology in details. It is more focused at the practical design and implementation mistakes during development process concerning garbage collection and performance.
  • Remoting Calls RecommendationSep 19, 2002. The goal of this article is not to describe remoting technology in details. It is more focused at the practical design and implementation mistakes development process concerning garbage collection and performance.
  • 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.
  • MDX Query BuliderNov 11, 2002. In this article we will be developing a MDX Query Builder.This is similar to the MDX sample application operations, which carry out the transfer of blocks from the secondary memory to the main memory and vice versa.
  • Working with Win32 API in .NETNov 21, 2002. Windows exposes lots of functionality in the form of Win32 API. Using these API you can perform direct operation in windows, which increases performance of your application.
  • The "Using" Statement in C#Dec 11, 2002. The .Net Framework provides resource management for managed objects through the garbage collector - You do not have to explicitly allocate and release memory for managed objects.
  • Concurrency Control in ADO.NET using Threads and MonitorsDec 31, 2002. The concurrency controls system refers to the lowest level in architecture of a DBMS. It is relative to the input/output operations, which carry out the transfer of blocks from the secondary memory to the main memory and vice versa.
  • Caution When Using SetParentRow of a DataSetJan 13, 2003. I had a serious performance killer when using SetParentRow in the creation of a DataSet in ADO.NET.
  • Mail Checker 1.0Jan 16, 2003. In this article, author shows how to create a program to check your IMAP mail.
  • Distributed Cross Platform Applications, the Easy Way Mar 07, 2003. There are many ways of transferring data from one process to another. All those methods have some advantages, but also some drawbacks.
  • 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.
  • Iterations and Performance in .NETApr 15, 2003. I’ve been implementing numerical libraries in .NET and have come to some conclusions about iteration performance.
  • 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.
  • Boxing and Unboxing of Value Types : What You Need to Know?Jul 21, 2003. Programmers new to C# can encounter less than ideal performance and even unexpected results due to boxing and unboxing of value types.
  • 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.
  • Memory Management in .NETNov 17, 2003. This tutorial describes Memory Management in .NET.
  • 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.
  • Debugging a Compiled ComponentFeb 02, 2004. After an assembly is compiled into a dll in a release mode, it is very difficult to gather information from it such as runtime performance, parameters values, etc.
  • Report Generation in .NETFeb 27, 2004. Report generation is an integral part of enterprise application development. Choosing the right kind of report generation strategy decides the success of the application in terms of cost and performance. The white paper discusses some of the key factors that need to be considered when architecting reporting systems in .NET and C#.
  • Understanding .NET Framework at a glanceMay 05, 2004. In this article we are going to look at Microsoft .NET Framework. This is the newly established software development environment which helps developers to develop applications quickly and gives optimum, efficient, scalable, performance oriented applications in different languages like Visual Basic .NET, C#, ASP .NET, and Jscript .NET.
  • Avoid Memory Leaks with Destructor and DisposeJul 01, 2004. Here are two classes that allocate resources, the first class needs to implement a custom destructor and standard Dispose, but the second class doesn't need either.
  • Microsoft Application Center TestOct 13, 2004. Application Center Test (ACT) stress tests Web servers and analyze performance and scalability problems of Web applications. ACT simulates a large group of users by opening multiple connections to the server and rapidly sending HTTP requests. It also supports several other authentication schemes and the SSL protocol, making it ideal for testing personalized and secure sites.
  • 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.
  • 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.
  • Measure Web Service Performance using NetMonMay 03, 2005. This article gives an idea how to identify the performance of web method calls by using NETMon tool.
  • 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.
  • Generic Types in C# 2.0 with SampleAug 01, 2005. This article discusses generic types available in C# 2.0. The article also shows some sample source code on how to use generic types.
  • New Dataset features in ADO.Net 2.0Aug 22, 2005. ADO.NET class libraries are used for accessing data from a wide range of data sources. One of the best features in ADO.Net is DataSet.Even though it was an exciting feature, performance was a concern with DataSet. Lets look some changes made to DataSet in ADO.Net in this article.
  • ASP.NET Session StateSep 21, 2005. Session state is nothing more than memory in the shape of a dictionary or hash table, e.g. key-value pairs, which can be set and read for the duration of a user's session.
  • Glue IIS with Business Logical Tier using Batching, Asynchrony, and Parallel ComputationOct 26, 2005. A great and unusual way to boost your web application performance and scalability five times or more.
  • How do I use Memory Stream in C# Oct 27, 2005. This article shows how to use memory stream to read byte[] array and can use to write some file in memory.
  • Navigating Data Grid using Client ScriptingNov 10, 2005. It's very common practice to use the Data Grid to present data over web pages. Though the Data Grid is provides the richer UI presentation if not coded and handled effectively it can have great performance issues. This article gives the code sample for navigating the data grid using the Client Scripting (thereby can be used for lots of validation before doing the Post Back to the server) and minimizing the round trip to server
  • 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.
  • Types of VariablesJan 14, 2006. In this article we'll cover the behaviors of variables to Reference Types.
  • C# Heap(ing) Vs Stack(ing) in .NET: Part IJan 14, 2006. Even though with the .NET framework we don't have to actively worry about memory management and garbage collection (GC), we still have to keep memory management and GC in mind in order to optimize the performance of our applications.
  • C# Heap(ing) Vs Stack(ing) in .NET: Part IIJan 15, 2006. Having a basic understanding of how memory management works will help explain the behavior of the variables we work with in every program we write. In this article I'll cover some of the behaviors we need to be aware of when passing parameters to methods.
  • C# Heap(ing) Vs Stack(ing) in .NET: Part IIIJan 15, 2006. Having a basic understanding of how memory management works will help explain the behavior of the variables we work with in every program we write. In this article we’ll cover an issue that arises from having reference variables in the heap and how to fix it using ICloneable.
  • Using Management Objects to check Online PrintersJan 20, 2006. This article shows to check online printers using management objects.
  • C# using the Proxy Pattern to Define RelationshipsJan 23, 2006. I was recently working on a 2.0 Framework project where we had many types of related objects. However, we needed to ensure that there were not multiple instances of the same object in memory. Usually the GOF Proxy pattern is used to hide or control access to an object, but we can also use it to define relationships between objects.
  • C# Heap(ing) Vs Stack(ing) in .NET: Part IVJan 30, 2006. Having a basic understanding of how memory management works will help explain the behavior of the variables we work with in every program we write. In this article we’ll look further into Garbage Collection (GC) and some ways to keep our applications running efficiently by using static class members.
  • Creating ASP.NET Photo Album using FileSystem as DataFeb 13, 2006. Memories Photo Album is ASP.NET application which allows you to easily create online photo album just by specifying folder containing subfolders and images. I created this application to share personal photos with friends and family, last month I converted it to .Net Framework 2.0 and decided to share with community.
  • Using Dispose method in C#Feb 17, 2006. This artice will explain about Finalize and Dispose method implementation in C#.
  • The C# Value Type and BoxingFeb 17, 2006. Even though with the .NET framework we don't have to actively worry about memory management and garbage collection (GC), we still have to keep memory management and GC in mind in order to optimize the performance of our applications. One of the things we need to be aware of is how the Common Language Runtime (CLR) deals with references to value types.
  • Writing C# 2.0 Unsafe CodeFeb 23, 2006. We will see that C# allows suspending the verification of code by the CLR to allow developers to directly access memory using pointers.
  • Tips to Improve the Performance of ASP.Net ApplicationMay 12, 2006. This article features tips to improve the performance of ASP.Net Application
  • Merging data into single table from multiple tables (resultsets)May 15, 2006. This article shows how to reduce the number of trips to improve performance by merging data into single table from multiple tables (resultsets).
  • Best Practices of Compact FrameworkMay 17, 2006. This shares a few recommendations for use in our day to day development of Compact Framework applications.
  • Top 10 Reasons to Switch from Java to Visual C#Jun 03, 2006. This article details the major reasons for Java programmers to consider switching from the Java language to Visual C#.
  • Display Process list and Processor Performance in C#Jun 14, 2006. This article shows how to display Processes list and performance of processor exactly.
  • Streamlining Web Application PerformanceJun 29, 2006. This article discusses some performance tuning tips for those who use ASP.NET as front-end and Microsoft SQL Server as back-end to develop their applications.
  • System components performance in ASP.NET using C#Jul 01, 2006. This article shows how to retrieve system properties in a webpage on just singleclick of mouse.
  • 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.
  • Best practices for .Net Performance - IAug 03, 2006. This article gives you an overview of best practices to attain .Net performance.
  • Illustrates the use of the lock in multithreading applicationAug 17, 2006. Any application must have one or more processes. A Process is structural unit with a memory block and using some set of resources. For each executable, the Windows operating system creates some isolated memory block. This article tries to explain the use of lock basics of Multithreading in C# .Net.
  • Changing XSL StyleSheets on the FLY in C# and ASP.NETSep 26, 2006. This article shows you how you can use alter XSL in memory to transform XML data into HTML with different results.
  • 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.
  • Using Predicates over foreach in ArraysOct 24, 2006. We generally use foreach blocks to iterate through Arrays n Lists in order to operate on them which not only makes our code long n confusing but also makes us compromise on performance. The solution to this lies in Predicates...
  • Monitor and Display CPU State InformationDec 18, 2006. This article describes a quick and simple approach to displaying information about the state of the CPU or CPUs on a targeted machine.
  • 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
  • Strategy for querying Microsoft Access as an In-Memory Database using DataSets and ADO.NETJan 19, 2007. DataSets are powerful data structures with the capability of allowing the programmer to treat them as in-memory databases.
  • 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
  • Multi-threaded Asynchronous Programming in C#... Getting started.May 12, 2007. Trying to build better solutions and growing as a developer has always been fun for me and I’m always looking for ways to build more scalability and robustness in the software I am writing. I had a revelation that I’ve been doing a lot of C# tweaking but not taking advantage of the core performance enhancements cooked right into C# and it all comes down to one thing: Asynchronous multi-threaded programming.
  • 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.
  • Multi-threaded Asynchronous Programming in C#... Through The Web Page. Part VIJul 27, 2007. Async web pages which are primarily used as a server performance enhancement. There are two main methods we will be looking at that are used to execute operations asynchronously from web pages: Page.AddOnPreRenderCompleteAsync() and Page.AddOnPreRenderCompleteAsync().
  • 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.

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