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  1. C# Interface for beginners and professionals with examples on overloading, method overriding, inheritance, aggregation, base, polymorphism, sealed, abstract, interface, namespaces, exception handling, file io, collections, multithreading, reflection etc.

    • C# Namespaces

      C# Namespaces. Namespaces in C# are used to organize too...

  2. In C#, an interface can be defined using the interface keyword. An interface can contain declarations of methods, properties, indexers, and events. However, it cannot contain instance fields. The following interface declares some basic functionalities for the file operations.

  3. 22 Απρ 2020 · C# | Interface. Like a class, Interface can have methods, properties, events, and indexers as its members. But interfaces will contain only the declaration of the members. The implementation of the interface’s members will be given by class who implements the interface implicitly or explicitly.

  4. The Interface in C# is a Fully Unimplemented Class used for declaring a set of operations/methods of an object. So, we can define an interface as a pure abstract class, which allows us to define only abstract methods. The abstract method means a method without a body or implementation.

  5. To access the interface methods, the interface must be "implemented" (kinda like inherited) by another class. To implement an interface, use the : symbol (just like with inheritance). The body of the interface method is provided by the "implement" class.

  6. C# interface. In C#, an interface is similar to abstract class. However, unlike abstract classes, all methods of an interface are fully abstract (method without body). We use the interface keyword to create an interface. For example, interface IPolygon {. // method without body void calculateArea(); }

  7. 15 Απρ 2013 · The solution is to make DoCool() public and remove the explicit interface implementation: public abstract class AbstractWidget : IDoesCoolThings { public void DoCool() // DoCool() is part of the abstract class implementation. { Console.Write("I did something cool."); } } // ...

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