C# Corner

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  • 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#.
  • Display data in a Data GridJan 22, 2001. The sample example show you how to use Data Grid to display data in a grid format.
  • ADO.NET DataSet ProgrammingMar 20, 2001. A sample project shows you how to add, edit, delete, navigate, save records in a database using DataSet.
  • ADO Vs ADO.NET Web ServiceMar 22, 2001. In this example I'd like to demonstrate one of the most interesting features of the .NET runtime - the concept of Webservices.
  • Accessing .NET Components from COM Clients and COM components from .NET ClientsMar 26, 2001. In this article I am going to explain how to access a .NET component from a COM client and accessing COM from .NET clients.
  • Protecting IL Code from unauthorised DisassemblingApr 09, 2001. Microsoft .NET proved a mechanism where the code written in VB.NET, C# or any CLS compliant languages to generate MSIL (Microsoft Intermediate Language)code which targets the CLR and executes. This is an excellent mechanism to abstract the high level code from the underlying hardware.
  • 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.
  • Assemblies : The Ins and Out : Part IApr 13, 2001. In Part 1, I will cover what exactly an assembly is, and what an assembly contains.
  • Assemblies : The Ins and Out : Part IIApr 16, 2001. In this part, I will discuss both Private and Shared assemblies and how to create a "Shared Assembly".
  • Assemblies : The Ins and Out : Part IIIApr 20, 2001. In this part I will discuss in more detail than Part 2, the available utilities for manipulating assemblies.
  • .NET framework comparison with Java ArchitectureMay 08, 2001. This article outlines Microsoft's proposed standardization of .NET framework in ECMA forum as CLI (Common Language Infrastructure), but the Microsoft documentation refer this as CLR (Common Language Runtime).
  • 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.
  • Creating Run-Time Menus in C#Jun 14, 2001. Sample example on how to create runtime menus.
  • Working with OleDb Data AdaptersJun 20, 2001. This step by step article guides you to create your database applications using OleDb Data Adapters in VS.NET.
  • IL "The Language of CLR" - A Platform for Cross-LanguageJun 28, 2001. This article introduces the Cross-Language capabilities of CLR environment (Common Language Runtime Environment) and its constituent language IL (Intermediate Language).
  • Working with Data Bound ControlsAug 07, 2001. Step by step tutorials teaches you how to use data-bound controls DataGrid, ListBox, and ComboBox controls .
  • Run-Time Menus in C#Aug 20, 2001. The following example demonstrates how to create menus on the fly.
  • A Vision Regarding .NETAug 27, 2001. The present enterprise setup's need to have n-tire architecture with diverse platforms and object models communicating with each other. The present applications are to be created such that those applications have to run in any platform (like Windows, Linux, Mac , Unix etc) and which consist of components written in many programming languages and object models.
  • A Quick View From C/C++ to C#Sep 10, 2001. This article provides a quick overview of the C/C++ and C# languages.
  • using Array Class and IEnumeration in C#Sep 14, 2001. This article illustrates the usage of Array class and IEnumerator. Array class Provides methods for creating, manipulating, searching and sorting arrays, thereby serving as the base class for all arrays in the common language runtime.
  • Oracle Database ConnectivitySep 26, 2001. This is a GUI based data entry application which shows how to add, modify and delete records using Oracle Database.
  • Adding Controls to Windows Forms at RuntimeNov 13, 2001. In this example I'll show how one can create and add controls to their Windows Forms at runtime.
  • Exceptions and Exception StackNov 16, 2001. The purpose of this tutorial is to explain firstly how you would go about creating your own set of exceptions to trap error conditions that could occur in your code or library, for your own benefit or for the benefit of another developer using your library. The second lesson is on how the C# exception stack works, and how you can use it to catch all types of exceptions.
  • Using ADO RecordSet in ADO.NETDec 10, 2001. Using ADO recordset in managed code using ADO.NET data providers is pretty simple. Visual studio .NET provides you to add reference to the COM libraries. In this article I'll show you how to access data using ADO recordset and fill a ADO.NET data provider from the recordset data.
  • 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.
  • Overview of Automated TranscationsJan 04, 2002. Two or more .NET Framework objects can participate in the same transaction. One or more .NET Framework objects can participate in the same transaction as one or more COM+ objects. All objects must be hosted in Microsoft Windows 2K Component Services so as to receive services such as transaction processing.
  • Using MS Agent in C# - Part-IIIJan 09, 2002. In this article, I will show you how to write a program which lists all the animations of the loaded characters which speak to us using synthesized speech, recorded audio, or text in a cartoon word balloon.
  • Chat Server with Client Implemented with C#Jan 19, 2002. This client/server application let you chat ....
  • .NET Framework and Web Services - Part 1Jan 28, 2002. The .NET Framework is a new computing platform designed to simplify Windows application development in the highly distributed environment of the Internet. Common Language Runtime (CLR) is the Heart of the .NET Framework.
  • World Weather Update on Your MobileFeb 04, 2002. In this article, I would like to discuss the "Weather Update" on Your Mobile.
  • Data Binding in DataGrid Control - Part 1Feb 05, 2002. When it comes to data-bound controls and database programming, DataGrid control is the most versatile , powerful and flexible control available in Visual Studio .NET.
  • VS.NET Tools Intermediate Language Disassembler (ILDAM)Feb 06, 2002. "The ILDSAM tool parses any .NET Framework EXE/DLL Module and shows the information in a human-readeble format"
  • Buliding A WAP SiteFeb 27, 2002. In this Article I would like to share my views about Pagibnatioon and how to use Pagination in Mobiles Forms.
  • Create a SQL Server Database dynamically in C#Mar 05, 2002. In this article, I’ll show you how to create a new SQL Server database and its objects such as table, stored procedures, views and add and view data. I’ll also show you how to change database table schema programmatically. You’ll see how SQL statement ALTER TABLE is useful when you need to change a database table schema programmatically.
  • Reflecting Data to .NET Classes: Part I - From HTML FormsMar 06, 2002. Reflection allows us to examine internal details of assemblies and classes at runtime (programmatically).
  • Adding Controls to a DataGrid at RuntimeMar 19, 2002. This article below sheds some light in above area i.e. user can add any control based on his/her choice and can use it to edit the details in the data grid.
  • .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.
  • DNS Resolver using DNSAPI.DLLApr 15, 2002. This is a DNS resolver using the dnsapi.dll, it can do all sorts of DNS lookups and not just simple a record lookup like the Dns class in the .NET framework.
  • .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.
  • Display and Hiding SIP on a Pocket PCMay 21, 2002. When you get your hands on a Pocket PC for the first time you have to wonder just how the heck do you enter information?
  • Editable ListBox ControlJul 01, 2002. A ListBox is a read-only list of items. But let us suppose your application needs to edit an item in a listbox at runtime.
  • Using Currency Manager and MemoryStream to Display ImagesJul 01, 2002. This article and attached sample code demonstrates you how to use the CurrencyManager and MemoryStream to display images.
  • Use CurrencyManager and MemoryStream to Display ImagesJul 01, 2002. This article and attached sample code demonstrates you how to use the CurrencyManager and MemoryStream to display images. The current demonstration displays all the records of the employees with their company and the personal Information.
  • Programming Template in Web Server ControlsJul 15, 2002. Templates play a major role in managing the layout and format of the data being displayed in ASP.NET data bound controls.
  • Master-Detail Display using Nested Repeater Web Forms ControlAug 05, 2002. In this example, we will create a web page that displays a formatted view of data with a master detail hierarchy using nested Repeater controls. We will use the Northwind sample for our example. There are many different ways to accomplish this task. We will use data binding and data relations in an effort to get a simple solution.
  • Understanding Garbage Collection in the .NET FrameworkAug 09, 2002. In this article we will explore the Garbage Collection feature in the .Net framework and the activities required in applications to manage resources complementing the Garbage Collector.
  • User Management Utility for Web Form AuthenticationSep 06, 2002. This article deals with the management of user login and password information for a Forms Authentication in ASP.NET.
  • 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.
  • 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.
  • Daleks in .NETDec 11, 2002. The other night my girlfriend dragged me down to the NYC Public Library claiming that they had a huge Science Fiction movie section. Admittedly my taste in movies and my wife's taste in movies can vary slightly, however, I was willing to take a chance, given that rentals at the library are free as opposed to $4 at the local video store.
  • 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.
  • Cryptography in Microsoft.NET Part I: EncryptionDec 12, 2002. In this article, Gowry sheds lights on the basics of cryptography and how it can be implemented in .NET.
  • COM Interoperability Part 1: Using COM Components in .NET FrameworkJan 02, 2003. In this article we review the concepts & walk-through an example that demonstrates COM interoperability in .NET framework.
  • Using Cards.dll in a Windows Control LibraryJan 16, 2003. This project aims at designing a windows control library that encapsulates a playing card.
  • The "ins" and "outs" of Using Stored Procedures in C#Jan 27, 2003. This article reviews the creation of stored procedures with parameters using the Visual Studio IDE.
  • Recording Sheet Music Using C# and .NETFeb 07, 2003. This is a article that allow you to record and replay the music you performed on the piano.
  • 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.
  • Use Thread Local Storage to Pass Thread Specific DataMar 18, 2003. The specific thread level storage is known as thread local storage or TLS for short. The .NET threading namespace allows .NET developers to use TLS from within their multi-threaded applications to store data that is unique to each thread.
  • Basics of Extending Your Working Environment in Visual StudioApr 10, 2003. All of us have used Macros in Microsoft Office and Add-ins in Visual Studio 6 and I am very sure all of us have been impressed as well by their power to control their own working environment.
  • C# Video PokerApr 14, 2003. This Video Poker game is an imitation of a casino Video Poker machine. It is written using Windows Forms.
  • Implementing Custom Paging in ASP.NET DataGrid ControlJun 01, 2003. This article shows you how to implement custom paging in ASP.NET DataGrid control.
  • Sorted List and Web Server ControlJun 09, 2003. This article shows you to take advantage of SortedList in data binding with Web Server controls.
  • 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.
  • DataGrid and Client Side EventsJun 17, 2003. This article shows you how to use DataGrid client side events including mouse over, on click and so on.
  • Formatting ASP.NET DataGrid's DataJun 17, 2003. This article shows you how to change the color of a DataGrid row and format of date.
  • How to Change DataGrid Header Text?Jun 30, 2003. This article shows you how to change the header text of a DataGrid programmatically.
  • Building a Navigation System in ASP.NETJul 16, 2003. This article shows you how to display single record per page and navigate through single record using ASP.NET.
  • 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.
  • Deleting a DataGrid Data Based on a Column ValueJul 24, 2003. In this article we'll see how to delete the records of a DataGrid based on a column value in the database table.
  • 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.
  • Export ASP.NET DataGrid to ExcelSep 08, 2003. Export to Excel is one of the most common functionality required in ASP.NET pages. Users can download the data from the DataGrid into an Excel spreadsheet for offline verification and/or computation.
  • Using the .NET compact FrameworkOct 01, 2003. In this article, we will see how to write a simple .NET Compact Framework application and deploy it onto a device. This article provides a step-by-step instruction on how to write the application.
  • Display Sorted Records in Crystal ReportsOct 03, 2003. This article shows you how to use Crystal Reports options to sort a report records.
  • Late Binding With ReflectionOct 20, 2003. Component based technology has done great things for software development, allowing reuse and leading to better-written code that separates subjects and entities into distinct components.
  • Introduction to ASP.NET HTTP ModuleNov 24, 2003. This article will help the users to examine the use of HTTP Modules and their use in extending the pipeline. The HTTP Pipeline is a series of extensible objects that are initiated by the ASP.NET runtime in order to process a request.
  • Edit/Update a Chosen Database RecordDec 09, 2003. This article and available source code shows how to edit and update a database record through a DataGrid control
  • Enhanced XP Button ControlDec 12, 2003. The enhanced XP style button is very easy to use and it supports rectangle, circle or ellipse shape with image and different colors. This control also inherit most of the properties from the Forms.Button.
  • DNS Client in C#Dec 22, 2003. The attached source project contains the library and source code for DNS client application. This client supports A, MX, and PTR records.
  • Display Alphabetically Sorted Data in a Data GridDec 24, 2003. This code sample shows you how to display data sorted alphabetically based on the values in the database.
  • Screen Capture and Save as an ImageDec 30, 2003. The following example source code shows how to capture the screen and save it to an image.
  • 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.
  • Typed DataSets in .NETFeb 03, 2004. As all of we know, we can specify the data type when we create a DataColumn for a DataTable. This is to enforce the runtime type-safety for the column so that only data of specified data type can be stored in the column.
  • Data Binding in DataGrid Control using C#Feb 17, 2004. The ADO.NET DataSet is a data construct that can contain several relational rowsets, the relations that link those rowsets, and the metadata for each rowset. The DataSet also tracks which fields have changed, their new values and their original values, and can store custom information in its Extended Properties collection. The DataSet can be exported to XML or created from an XML document, thus enabling increased interoperability between applications.
  • Oracle Data Provider for .NET : Part VIFeb 20, 2004. Oracle Data Provider for .NET (ODP.NET) is an implementation of a data provider for the Oracle database. ODP.NET uses Oracle native APIs to offer fast and reliable access to Oracle data and features from any .NET application.
  • 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.
  • SOAP Client in Windows XPMay 06, 2004. This article covers the basics of using the SOAP Client software included with Microsoft Windows XP Professional to access Web Services using SOAP.
  • A Macro for Creating Properties from Private FieldsMay 12, 2004. Macros are a useful way of speeding up your coding efforts, however writing them can be a somewhat daunting task. Luckily, .NET gives you a pretty powerful recording feature for recording macros from key strokes.
  • Object Binding in DataGrid with C#Jun 15, 2004. In this article, I will discuss how to bind objects such as an ArrayList to a DataGrid control using C#.
  • 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().
  • Introduction to ASP.NETNov 17, 2004. I have seen many tutorials on ASP.NET but most of them starts with coding and writing your first ASP.NET program. But here I have written this tutorial for explaining why there is a need for ASP.NET when classy ASP is working fine, what are the underlying technology behind ASP.NET, and what programming model ASP.NET provides to programmers.
  • What does .NET really mean? – Understanding .NETFeb 10, 2005. The .NET Platform and .NET-Aware Programming Languages, particularly C# are already making a turnaround in the way Applications are developed in the enterprise world.
  • Understanding Threading in .NET FrameworkApr 21, 2005. This article describes how to use threading model in .NET Framework including creating, joining, suspending, killing, and interlocking threads.
  • Accessing Global Address List via System.DirectoryServices NamespaceMay 21, 2005. This is a how-to article to access the GAL from ASP.NET, using the DropDownList ASP.NET server control as the UI. To accomplish this the article will illustrate by utilizing ADSI technology from a C# assembly returning an ArralList in order to bind to the DropDownList.
  • Accessing Global Address List via System.DirectoryServices namespaceMay 21, 2005. This is a how-to article to access the GAL from ASP.NET, using the DropDownList ASP.NET server control as the UI. To accomplish this the article will illustrate by utilizing ADSI technology from a C# assembly returning an ArralList in order to bind to the DropDownList.
  • Editable ListBox in C#Jun 09, 2005. The attached sample code demonstrates how you can create an editable ListBox control, which will let you edit ListBox items at runtime.
  • How to Maintain a CodeGroup in Security Policy at Runtime?Jul 05, 2005. Whenever protected resources are accessed by an assembly, it’s permissions are determined by the code access security system of CLR. Each permission set granted to an assembly is based on the assembly's evidence (such as its URL or publisher certificate, strong name), which in turn is based on configurable security policy.
  • Object DataSource in ASP.NET 2.0Aug 19, 2005. ObjectDataSource control is one of these new data control added to ADO.NET 2.0. This control is used to bind objects to data-bound controls. In this step by step tutorial, I will discuss how to use ObjectDataSource control in your data-driven Web applications.
  • Introduction to ADO.NET 2.0 Data Source ControlsAug 19, 2005. ADO.NET 2.0 provides new data source and data-bound server controls, which allow developers to write full-fledged data-driven applications without writing even a single line of code. This article is an introduction to these new data source controls.
  • Binding an ArrayList with DataGrid ControlOct 24, 2005. I have seen several questions on how to bind an ArrayList with data-bound controls such as a DataGrid. In this step by step tutorial, I will show how to create an ArrayList of objects and bind it to a DataGrid control.

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