July 2003
Intermediate to advanced
736 pages
16h 35m
English
Content preview from Visual Basic® .NET Power CodingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Programming with ADO.NET Interfaces
.NET supports two flavors of polymorphism: (1) the polymorphism introduced through inheritance, virtual methods, and the virtual methods table, and (2) the polymorphism introduced with COM and interfaces. The first form, called inheritance polymorphism, means that all instances have a common classification. (For example, bears and goats can both be classified as mammals.) The second form of polymorphism, called interface polymorphism, means that all instances have a common capability but are not required to have a common classification. (For example, radios, televisions, hearing aids, telephones, and bullhorns all have the ability to attenuate volume, but they don't necessarily share a common classification.) ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.