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This article mainly introduces "how to realize C# method rewriting". In daily operation, I believe that many people have doubts about how to realize C# method rewriting. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubt of "how to realize C# method rewriting"! Next, please follow the editor to study!

C # method rewriting

By providing a new implementation for the declared method, the derived class can override the method of the base class. An important difference between Java and C # is that Java methods are marked as virtual methods by default, while in C #, you must use the virtual modifier to explicitly mark methods as virtual methods. Property accessors and methods can be overridden in much the same way.

To be overridden by a C # method in a derived class is declared with the virtual modifier. In derived classes, it has been overridden by the C # method and declared with the override modifier.

The override modifier represents a method or property of a derived class that replaces a class with the same name and signature in the base class. The base method to be overridden must be declared as virtual, abstract, or override: it is impossible to override a non-virtual or static method in this way-see the next section on this issue. Has been overridden by a C# method or the property and the overridden method or property must have the same access-level modifier.

The following example shows a virtual method called StepUp, which is overridden with the override modifier in a derived class:

Using System; public class CountClass {public int count; / / Constructor public CountClass (int startValue) {count = startValue;} public virtual int StepUp () {return + + count;}} class Count100Class: CountClass {/ / Constructor public Count100Class (int x): base (x) {} public override int StepUp () {return ((base.count) + 100);} public static void Main () {CountClass counter = new CountClass (10); CountClass bigCounter = new Count100Class (10) Console.WriteLine ("Value of count in base class = {0}", counter.StepUp ()); Console.WriteLine ("Value of count in derived class = {0}", bigCounter.StepUp ());}}

When we run this code, we will find that the constructor of the derived class uses the method body given in the base class, which allows us to initialize the count member without copying the code.

At this point, the study of "how to implement C# method rewriting" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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