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Modifiers in C#modifiers — keywords that can be applied to a type or to a member. Access Modifiers: public - The item is visible to any other code. protected - The item is visible only to any derived type. internal - The item is visible only within its containing assembly. private - The item is visible only inside the type to which it belongs. protected internal - The item is visible to any code within its containingassembly and also to any code inside a derived type. Example: public class MyClass{// etc.} Modifiers that indicate the nature of an item: Abstrac t- Indicates that a class is intended only to be a base class of other classes. Const - Specifies that the value of the field or the local variable cannot be modified. New- Hides an inherited member from a base class member. Override - Provides a new implementation of a virtual member inherited from a base class. Partial - Defines partial classes, structs and methods throughout the same assembly. Sealed - Specifies that a class cannot be inherited. Static - Declares a member that belongs to the type itself instead of to a specific object. Virtua l - Declares a method or an accessor whose implementation can be changed by an overriding member in a derived class. extern -The member is implemented externally, in a different language. class MyBaseClass { public virtual string VirtualMethod() { return "This method is virtual and defined in MyBaseClass"; } } class MyDerivedClass: MyBaseClass { public override string VirtualMethod() { return “This method is an override defined in MyDerivedClass.”; } }
Дата добавления: 2015-09-18 | Просмотры: 476 | Нарушение авторских прав |