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Microsoft .NET New Logo by Wely

Seperti yang diberitakan oleh Scott Hanselman , Microsoft .NET sekarang punya logo baru. Logo Microsoft .NET yang lama telah berumur 8 tahun sejak tahun 2000, .NET pertama kali lahir. Berbarengan dengan PDC tahun ini , Microsoft menggantikan logo mereka...
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Read Excel File from .NET by Wely

Microsoft Excel has been widely used in office and business application. When you are building enterprise business application that used to do something with excel, you need to integrate your application with excel. One of the most simple step is reading...
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The evolution of Delegate, Anonymous Method, Lambda Expression by Wely

In this opportunity, I am going to write something about the evolution of Delegate, Anonymous Method, till Lambda Expression. Here's I will use a build in delegate, Predicate<T> to give the example. My example is simple. There's a collection...
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Remove unused using in Visual Studio 2008 by Wely

Even though, include many "using" namespace will not affect the performance when runtime, but it will affect your Intellisense performance. When you type something, Visual Studio's intellisense will search the associated work you typed with...
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Kid's Corner for computer programming by Wely

Are you a parent or teacher looking to start your kids learning about how computers and programs work? Or are you a cool kid who wants to create some fun programs and impress your friends and family with your mad skillz?! Check out the Kid's Corner...
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ASP.NET 2.0 FileUpload Problems by Wely

I was wondering why I got error when I upload big size file (4 or 5 MB). But when 3.9 MB, it worked well. My colleague told that we have to change a key "AspMaxRequestEntityAllowed" at MetaBase.xml which is located in C:\WINDOWS\system32\inetsrv...
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Have you use Generic’s collection? by Wely

We often need collection in our programming. To implement collection, we have two choices: fixed-length collection which is familiarly "array" and dynamic length collection. One of the popular dynamic collections is ArrayList. ArrayList (actually...
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ASP.NET AJAX UpdatePanel Compatibility by Wely

I have tried using ASP.NET AJAX for few times. Few weeks ago, I use UpdatePanel along with DetailsView to view the details from GridView. One of the DetailsView consist a column for upload file (using FileUpload control). When I tried to upload it, the...
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A practical "polymorphism" example by Wely

In my last post, I described what interface and abstract class are, how to create and use them. But, the question is “Why do we need to use interface or abstract class?”, “Is it useful?”, “What if we don’t use them...
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Interface VS Abstract Class by Wely

There are a lot of confusions, misconception, and misuses about Interface and Abstract Class. Actually the objectives of them are doing polymorphism. Interface Interface is a type perspective like class or structure. You cannot instantiate an object from...
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