By Mark Schmidt
This C# supplying takes a distinct method of support it stand out one of the a number of .NET programming titles to be had. The structure is easily suited to builders that already comprehend the fundamentals of .NET programming and need a pragmatic reference for varied programming projects. each one bankruptcy comprises a quick advent to the subject handy, by means of a few "recipes. every one recipe will include a short descriptive identify, by means of an extended yet short description of the duty, by way of the process itself, and eventually concluded with a "comments" part the place the procedure is mentioned"
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One of the good programming practice rules to follow when designing a class is to use data encapsulation by never exposing internal class variables with a public access modifier. Take care when designing your class and specifically adding fields to make sure you never allow external clients who are using your class to modify a member variable. Later in this chapter, you'll see different ways you can allow clients to change member variables without giving them access to the variable itself, thereby allowing you to first validate that the data they want to send is valid and will not disrupt the current state of your object.
Channel ); } } } Comments If you have been following the code for this book, you might have already noticed how to instantiate a new object using the new keyword. However, a few things have gone unsaid up to this point. When you use the new keyword to create a new instance of a class, the class name following the keyword is not just the name of the class but also signifies which constructor you want to call to create that class. Because overloaded constructors appear later in this chapter, you have been using the default constructor, which does not have any additional parameters.
It is primarily used to interact with system DLLs in conjunction with the DllImport attribute. The virtual keyword figures in class inheritance, which is covered later in this chapter. A virtual method means that the method can have its behavior changed by overriding it in a derived class. In other words, if someone wants to change how a class works, he can use the class you created as a base and redefine any methods that are declared virtual. Furthermore, when you declare a method using the Override modifier, you are redefining a method that was declared virtual in the base class you are deriving from.