Special Edition Using C#

Interfaces Members

An interface can contain the following members:

• Methods

• Events

• Properties

• Indexers

By default, all interface members are public. Interface members cannot be declared with the following modifiers:

• abstract

• protected

• public

• internal

• private

• virtual

• override

• static

This is because an interface member needs to be publicly accessible, so that it can be implemented by the respective class.

Interface Methods

As mentioned earlier, an interface method cannot have a body. Therefore, the method declaration always ends with a semicolon, as shown in the following example:

interface MyInterface 
{
    void SampleFunction(); 
}

→ For a detailed explanation of methods, see “Class Members,” p. 152

Interface Events, Properties, and Indexers

An interface ...