One of the more confusing aspects of the .NET framework is the multiple empty or NULL values an intrinsic object type can contain. To compound the confusion there are also differences between the way VB.NET and C# handle NULL references.
It’s important to understand all of the built-in object types and their initial values upon declaration. For example, Integer and Date types never contain Null values.
Tip: Integer variables will always contain 0 upon declaration; DateTime object types will always contain 1/1/0001 12:00:00 AM upon declaration.
In this tutorial we will examine these default types in VB.NET and implement an object oriented Utilities class to handle the data types and their default values, allowing for a much more clean error checking pattern in your code-behind classes or class libraries.
Kevin Koch is a senior software engineer with over 8 years experience designing and architecting primarily web based applications. Fresh out of college during the nineties he co-founded Task Solutions and developed several projects with the then popular classic ASP.
During the Dot Com boom Kevin left his position as president and joined a new venture to build an enterprise insurance claim system build upon J2EE technology. After the Dot Com crash Kevin schooled himself to become an expert with .NET technology and is currently freelancing his ASP.NET skills to build enterprise n-tier frameworks using advanced OO methodologies.
Nice article, just a pity it is so Visual Studio focused
It would be nice, in articles like these (especially in such a DW related site), if there was a paragraph or so on how to implement in Dreamweaver as well
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