By John Connell
During this book/CD-ROM utilizing operating courses as examples, chapters stroll readers via pattern functions that illustrate issues approximately visible uncomplicated .NET. The booklet covers necessities of object-oriented programming in visible simple .NET and explains the way to construct periods and paintings with the .NET Framework periods, easy methods to paintings with arrays and collections, and the way to debug and deal with blunders in courses. It additionally covers operating with .NET assemblies, records, and knowledge streams, tracking documents over a community, and internet companies. The CD-ROM includes a searchable digital reproduction of the publication, and pattern code written in visible uncomplicated .NET. Connell is an purposes developer who teaches graduate programming periods at DePaul collage.
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I'll cover garbage collection in more detail later on. I'll discuss what is called deterministic finalization and garbage collection (taking out used-up objects) in detail in Chapter 4. Dispose(disposing) End Sub In previous versions of Visual Basic, you set any references to objects to Nothing—for example, Set MyObject = Nothing—and the underlying COM plumbing would free up all memory and release any resources being used. NET, you can still use the Nothing keyword, but the object probably won't be freed at exactly that time.
Form) from which the current class inherits. The Inherits keyword is allowed only in class declarations. Think about what happens when a new form is added to your project. The form is born knowing how to do all sorts of things. It has its own menu, it knows how to resize itself, respond to events, and host controls, just to name a few. Imagine if you had to write the code to perform all those behaviors. Instead, you simply inherit the functionality of a form base class and modify your form so that it suits your needs.
As I stressed before, you don't know how the property is stored inside the object. It might be stored in Portuguese, pig Latin, or any language at all. All you know is that you can read an integer from the property or write an integer to set the property. How the object performs these operations is its business. " This kind of implementation is one of the productive aspects of working with objects. To use an object you simply read or write its properties and call the methods that it exposes. The object is responsible for doing the real work.