C# Corner

Resources  
  • Asynchronous Request in .NET (C#)Jan 09, 2000. This code sample shows how to call a COM component in .NET framework using C#.
  • Creating a Class and Call it from Main ProgramSep 30, 2000. This article explains how to create your class, add some functions and call it from Main function.
  • A Simple Calculator ClassNov 28, 2000. Code sample shows how to create a simple calculator class and call it from Main C# program.
  • CSDownloadURL : Download Contents of a Web PageDec 03, 2000. CSDownloadURL is a class which has two functions - SetURL and DownloadURL. The set URL sets the current URL and GetDownload downloads the URL contents and returns its contents in a string.
  • Creating an Empty Project using VS.NETDec 04, 2000. This tutorial guides you towards your first C# Empty project step by step. After that I'll show you how to add a class to the project and few members to the class and call this class members from the main method.
  • Creating C# Class Library (DLL) Using Visual Studio .NETDec 09, 2000. This tutorial explains how to create a C# class library(dll) and call it from a C# console client application.
  • Calling a COM Component From C# (Late Binding)Jan 08, 2001. This code sample shows how to call a COM component in .NET framework using C#.
  • Implementing Delegates in C#Feb 04, 2001. The Zip file contains two projects. One is VB.Net and the other is C#. Each project is an example of the same use of a delegate. A base class is derived and the delegate calls a method on several classes derived from the base class.
  • Implementing Delegates in C# : Part 2Feb 13, 2001. This is second part of Timothy's Delegates in C# series...
  • Chat Server and Client in C# Using Remoting TechnologyFeb 16, 2001. This application is a simple Chat server and Client, which is conversion of Java RMI chat server and client. The Java client was a Applet and present application client in Windows Forms.
  • Using Transforms with GDI+ in C#Mar 15, 2001. Transforms are matrices that allow you to rotate and translate your graphics shapes. In this example we are going to rotate a very powerful element in C# called the GraphicsPath.
  • Introduction to SOAPMar 22, 2001. Since the release I have been fascinated with this thing called SOAP, This bubbly new protocol backed by the power of XML is certainly going to make waves in the world of distributed computing. The first thing which comes into our mind is “Why the heck we didn’t think of this before?
  • Using Delegates to Choose Right FunctionApr 01, 2001. The need to call different class method based on some string passed to class is an old problem.
  • Writing Secure Code using C#Apr 06, 2001. Code access security is a mechanism that grants/denies access to resources within a method call. For example, code written by a person may be allowed to write to the disk while code from another one may be forbidden from accessing the disk. This control can be enforced even if the code written by both of them is used within a single application
  • Understanding How Assert Effects SecurityApr 25, 2001. Assert is a security action that is evaluated at run time. Code Access Permission classes and Permission Sets support a method called Assert. Using the Assert method to control access to resources or actions will allow your code to perform actions that it normally has permission to perform and will allow other callers up stream in the call stack to have access that they would not normally have.
  • Ouch! There is a Hook in My C#May 15, 2001. As an extension to the J++ design practice, C# has a syntactic construct, called Attributes, which let you drop hooks to Windows API or modify the runtime semantics, like threading synchronization behavior. The C# has legalized the hooking practice by calling them Attributes, and including them in ECMA C# specification.
  • Mobile Fun with XMLMay 24, 2001. Here is something really wonderful in Mobile field .This example is for authenticating the Mobile Users against his settings stored in XML file. This is really good where all the ease of XML is applied. Function open the XML file and particular node data validate it against user inputs and do the specified.
  • TCP/IPLib SampleJun 22, 2001. This compopnent contains both a TCP/IP server and client. TcpIpClient inherits from System.Net.Sockets.TCPClient and is very straight forward. After construction, specifying the host and port, a network connection is established by calling Connect(). Internally, upon a successful connection, the client receives a TcpIpPacket, which contains a unique cookie that is used in any subsequent transactions.
  • Calling Java Program from C#Jul 18, 2001. This article shows you how to call a Java program from C#.
  • Events and DelegatesJul 26, 2001. Events in C# are based on delegates, the Originator defining one or more callback functions as delegates and the listening object then implements then.
  • strnicmp equivalent in C#Aug 07, 2001. C# equivalent strnicmp function in C language. It accepts two input strings along with the number of positions of chars to compare.
  • Get the Place Game in C#Aug 14, 2001. I have written a game in C# called Get the Place.
  • Creating Dynamic Web Quizzes using C# and ASP.NETAug 15, 2001. This article describes how to create a web quiz from the information in a database.
  • Super String in C#Aug 20, 2001. Today I realized that I miss those Visual Basic/Visual C++ type operators. You know the ones: Left, Mid, Right.
  • Call Control in Mobile Internet ToolkitAug 24, 2001. This only provides you to make you calls easier but also gives a nice look to your program.
  • Passing Const Parameter to Functions in C#/C++/VB ComparedAug 30, 2001. Parameter passing to a function is extremely important in all programming languages. The desire to keep the passed parameter intact forced the compiler designers to add various keywords to the programming languages.
  • String Jargon in C#Sep 05, 2001. The following article shows some String functions which are not currently available directly in C#.
  • Brick Out in C#Sep 17, 2001. Way back, I'd say about 1981 (ok maybe not so far back!), there was a game for the Apple II called Brick Out.
  • Playing with StringsSep 18, 2001. This program explores the String class and its various methods. With this you will be able to initialize strings using different constructors and use them. To see how the methods of the 'String' class work, see the following code.
  • IComparable: Under the HoodSep 21, 2001. We now calling Array.Sort() on C# Types such as int, char, string will automatically do sorting based on that type.
  • WinChat For .NETOct 10, 2001. WinChat For .NET is a simple peer-to-peer chatting program that functions very similarly to the WinChat program provided by Windows 2000. It provides all the functionalities that the original WinChat program provides.
  • Encapsulation in C#Oct 12, 2001. In Object Oriented programming Encapsulation is the first pace. Encapsulation is the procedure of covering up of data and functions into a single unit (called class).
  • C# PagerOct 16, 2001. C# Pager is a simple client/server application that implements functions of a pager.
  • Exploring delegates in C#Oct 30, 2001. Delegates are a kind of type safe function pointers which are actually declared as class derived from System.MulticastDelegate.
  • Introduction to Pocket PCOct 31, 2001. At the time of writing (Oct 2001) Microsoft has shipped Pocket PC 2002 and also has just released the Visual Studio .NET add-on for Pocket PC called the compact framework.
  • Simple Sniffer in C#Dec 03, 2001. This program shows you how to retrieve data from a packet using Sockets.
  • Mark Six on the FlyDec 04, 2001. In this sample, I demonstrate how a WebForm can be called directly as an Image.
  • C# and ActiveX DLLDec 14, 2001. As you know with Visual Basic 6.0, it is possible develop a COM server and implement them in a Visual Basic client program. But this is being done by using Visual Basic. You may wonder about the idea of calling this DLL in a C# Application. Well, C# language provides us a way to call this COM server in a program. When we compile a C# program an Intermediate Language is generated and it is called as Managed Code.
  • Returning an Array Listing using Remote Procedure CallDec 26, 2001. In this article we will create a Web Service that will return an ArrayList of students.
  • Graphics Programming in C#Dec 26, 2001. The new improved version of GDI is called GDI+. The .NET framework provides a rich set of classes, methods and events for developing applications with graphical capabilities.
  • SOAP Message with Binary AttachmentsFeb 28, 2002. Recently Microsoft announced new format called DIME: Sending Binary Data with Your SOAP Messages.
  • Calling Managed Code from Unmanaged CodeMar 11, 2002. One significant part of developers (including myself) are doing some kind of automation of Microsoft Office. So I will concentrate on opposing side of problem, how to use managed assembly from MS Office or VB script. In this article, I will discuss how to call managed code from unmanaged code.
  • Tutorial: Capturing and Running IE Instances in a Windows controlMar 15, 2002. In this article we are going to study how to find the running instances of Internet Explorer on your machine.
  • Xite EncryptionMar 25, 2002. This class contains methods/functions for easily decrypting and encrypting data.
  • Function Overriding and Its Impact During Object InitializationMar 25, 2002. Different languages have different ways to initialize an object. C# and Java both have almost similar ways to initialize an object with few subtle differences.
  • Real-time Message Logging Utility - Part 1Apr 01, 2002. A message logger is a utility that helps in logging the messages thrown from functions/programs. It is useful in critical applications as it helps to know the time taken by a function to execute, the time that the function remained idle and any messages that the function wants to be logged for further analysis.
  • .NET COM Interoperability - Part 1: Using COM Components from .NET FrameworkApr 02, 2002. The DotNet framework exposes COM objects through a proxy called the runtime callable wrapper (RCW). The primary function of RCW is to marshal call between a managed client (.Net) and unmanaged COM object. The runtime maintains a single RCW for each COM object.
  • .NET COM Interoperability - Part 2: Using .NET Component from COMApr 02, 2002. When a COM client calls a DotNet object, the DotNet framework will create a COM callable wrapper (CCW). COM clients use the CCW as a proxy for the managed object.
  • 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).
  • Multithreading Part 4: The ThreadPool, Timer Classes and Asynchronous ProgrammingApr 16, 2002. In this article, I would discuss few more .NET classes and how and what role do they play a role in building multithreading applications.
  • A Database Component: Inserting Serializable ObjectsApr 23, 2002. The attached zip file contains two projects - a database component (DLL) project and a Windows forms project called Test. Both projects are written and compiled using Visual Studio .NET version 1.0.
  • Expression EvaluatorApr 30, 2002. This program uses the transformation from infix notation to postfix notation to evaluate most of the mathematical expressions.
  • An XY Plot User Control in GDI+May 24, 2002. This is a follow up of the article written originally for the beta version of .NET. called, A Graphics Component in C#.
  • Shell Commands within C#Jul 10, 2002. In this article we will examine a few examples for executing shell commands outside of our program using C#.
  • Using MSIL Code to Close Application ProgrammaticallyJul 18, 2002. You can use MSIL code to call Win32 APIs and one of the simplest example of it is by closing an application programmatically.
  • Double Buffer Drawing with DirectDraw: Part1Aug 15, 2002. Because we will be primary focusing on 2D game programming in the first articles, we will use the DirectX7 API which is perfect for its DirectDraw class and simplicity. Don’t worry for not having the right DLL because DirectX8 has full backward compatibility to DirectX7 and the COM object should already be available on your computer if you have DirectX 8 installed.
  • Calling Procedural COBOL from VB.NETAug 28, 2002. Many clients will have existing COBOL source code that they will want to use within the .NET Framework.
  • Calling Procedural COBOL from C#Sep 05, 2002. In a previous article we discussed how to call procedural based COBOL programs from VB.NET.
  • Working with COBOL Data Groups in C#Sep 11, 2002. In this article we will begin with a C# console application calling a COBOL DLL file. The C# application will pass it a number of occurrences to create in the table (much like a user requesting a specific number of months to report on).
  • 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.
  • Platform Invoke Sample - Changing the Desktop WallpaperSep 27, 2002. In this example we will see how to change the Desktop wallpaper by invoking a Windows API function from C#. The Platform Invoke mechanism allows you to access unmanaged functions implemented in dlls.
  • How to Fill Your Own Dynamic Objects using ADO.NETOct 02, 2002. Sometimes you need to use information of different types like strings, booleans or doubles in the same data structure.
  • Remote Procedure Calls using SOAPOct 04, 2002. Here is the sample RPC (remote procedure call) using SOAP ( simple object access protocol).
  • ATL COM Component, ASP.NET Web Service, and VB ClientOct 14, 2002. This article describes how to use ATL COM Components in ASP.Net web service and how to consume the ASP.Net Web Service from Visual Basic 6 Client. Ultimately the VB6 client calls the method of the COM component created in Visual C++ through the ASP.Net Web Service.
  • Using Dynamic Properties in Windows FormsOct 18, 2002. Using Dynamic Properties in Windows Forms by Dipal Choksi. Oct 18, 2002. In this article we will see how to dynamically configure properties in Windows Applications using Visual Studio.Net.
  • Printing Directly to the PrinterOct 21, 2002. Using this code enables you to print directly to the printer using WIN32 api calls and therefore should enable you to print at maximum speed rather than relying in the Windows Printing subsystems.
  • Platform Invocation Services in .NET FrameworkOct 25, 2002. This article will cover the details of Platform Invocation Services provided in .Net Framework. Platform Invoke Services acts as a bridge between the managed and unmanaged code. This service enables managed code to call unmanaged functions which are being exposed by any dynamic link libraries (DLL’s) such as Win32 API’s or any custom DLLs.
  • Function to Change a Block of Text to Title CaseNov 20, 2002. Function to change a block of text to Title Case.
  • 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.
  • Dynamic Code Generation and Code CompilationDec 16, 2002. This is a simple application for generating the code dynamically and compiling it dynamically.
  • DigitizeAny - A .NET Windows Digitization ToolDec 17, 2002. DigitizeAny uses Win32 API calls to obtain the coordinates of the cursor and then translates to the graph coordinates once set. Since a mouse click would essentially bring to focus the window where it is pointed to, this tool uses the key event to capture the coordinates of the cursor.
  • 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.
  • Using Stored Procedures in Conjuction with DataAdapterJan 09, 2003. A stored procedure is a named collection of SQL statements that are stored in the database. To the client a stored procedure acts similar to a function.
  • Telnet Scripting in C#Jan 28, 2003. This library, written in C#, expands on some telnet code from various other sources, presenting the caller with a number of functions handy for scripting telnet sessions (i.e. SendMessage, SendAndWait, WaitAndSend, WaitFor).
  • Execution-Time Code Generator for C#Mar 06, 2003. The Common Language Runtime provides a new way of doing things. The compile-time world still exist, but it is also possible to build dynamic systems where new code is added by loading assemblies or even by writing custom code on the fly.
  • Remote Objects:Part IMar 12, 2003. This demo shows how to create the remote objects with callback functions and use them in the window host.
  • Remote Objects: Part IMar 12, 2003. This demo shows how to create the remote objects with callback functions and use them in the window host.
  • Accessing COBOL Properties with C#Apr 02, 2003. This article will review a new option for exposing those assets via the use of Properties.
  • BuckyBalls: An Animated DirectX9 DemonstrationJun 02, 2003. BuckyBalls is an animated Managed DirectX demonstration. A buckyball, or fullerene, is a complex carbon molecule whose full name is buckminsterfullerene. The molecule contains 60 carbon atoms which form what is called a truncated icosahedron. It is shaped like a soccer ball or a geodesic dome, and is named after Buckminster Fuller, the inventor of the geodesic dome.
  • Part I: Simple Color Syntax Code Editor for PHP written in C# and .NETJun 18, 2003. The Application is a simple Windows Form program that allows you to open and save the text files edited in the rich edit control, as well as print them out. The program takes advantage of a “syntax” text file for PHP which lists the functions and keywords contained in the PHP language.
  • Using Linked List in C#Jun 25, 2003. What we going to make is a linked list. Yeah I know there is a class which does the same as a linked list called ArrayList, but we (as a diehard C# programmer) want absolute control and knowledge of what we use.
  • C# MethodsAug 05, 2003. This article explains hot to define and use methods in C#.
  • 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.
  • Using Genetic Algorithms to Generate Evolutionary Art in C# and .NETOct 10, 2003. In this article we will experiment a bit with genetic algorithms and creating fitness functions that produce art on a Windows Form.
  • Building Dynamic Service in C#Oct 31, 2003. This is a service that will run an application, and can be used over an over without hard coding any information.
  • Dynamic Data Grid for Windows Forms Sizing RoutineNov 11, 2003. This article and the attached source code project is called GridLayoutHelper and it allow you to size a Windows Forms DataGrid much like you can an ASP.NET DataGrid.
  • Migrating COM/DCOM Applications in Microsoft .NET FrameworkDec 09, 2003. In the current Internet scenario, various classic applications run on multiple networks. These applications could have been written using different languages like Visual Basic, Visual C++. For example, a retail organization would have different systems, such as an inventory management system, a bill of material systems, and a general ledger system, all implemented using various technologies available for application development. These systems need to be integrated to form a higher-level enterprise information system for an organization.
  • Automatically Break into Code When Calling Debug.AssertDec 22, 2003. This sample creates a dll that once referenced by your ASP.Net or Web Service app, just adding a small block of xml into your web.config file will cause the debugger to automatically break into your code.
  • Distributed Computing Using .NET RemotingJan 05, 2004. AppDomain is an isolated environment for executing Managed code. Objects within same AppDomain are considered as local whereas object in a different AppDomain is called Remote object.
  • 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.
  • Training and Simulating a Neutral DotNetwork in C# Jan 16, 2004. In this article we will explore a well-known AI algorithm for modeling the training of neural networks called back propagation.
  • 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.
  • Fundamentals of Function Point Analysis Part IFeb 17, 2004. Function points are a unit measure for software much like an hour is to measuring time, miles are to measuring distance or Celsius is to measuring temperature.
  • Fundamentals of Function Point Analysis Part IIFeb 18, 2004. Function points are a unit measure for software much like an hour is to measuring time, miles are to measuring distance or Celsius is to measuring temperature.
  • Configuring Publisher Policy FileFeb 20, 2004. Versioning in the Microsoft .NET Framework is managed at the assembly level and is only used when locating strong-named assemblies. By default, the common language runtime loads the assembly whose entire version number matches the version number in the calling assembly's metadata.
  • Normal Distribution Implementation in C#Apr 13, 2004. The attached source code is a C# normal distribution class. The probability density function (PDF) and cumulative distribution function (CDF) can be computed for a given x-value.
  • Resizable Calculator using C#Apr 22, 2004. This application is a scientific calculator, which is resizable and performs some basic operations like addition, subtraction, multiplication, division and some trigonometric functions.
  • Dynamic SQL Server Database Creation in .NETMay 03, 2004. This article explains step by step dynamic creation of a SQL Server database, tables and stored procedure using Visual Studio codename Whidbey and VB.NET.
  • Dynamic Database Creation - 2May 06, 2004. This article explains how we can display data using Dataset and DataGrid control after the database is created.

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