Convert Abstract Class to Interface
This refactoring allows you to convert an abstract class to an interface. This can be useful when you want a class to inherit from more than one abstract classes - then you can easily convert one of them to an interface.
Consider the example below. After applying the refactoring, a class is converted into an interface:
|Before refactoring||After refactoring|
To turn an abstract class into an interface
an abstract class
in one of the following ways:
- In the editor, set the caret at the name of an abstract class.
- Select an abstract class in the Solution Explorer.
- Select an abstract class in the File Structure window.
- Select an abstract class in the Class View.
- Select an abstract class in the Object Browser.
- Select an abstract class in the type dependency diagram.
Do one of the following:
- On the main menu, choose
- Right-click and choose Refactor | Convert Abstract Class to Interface on the context menu.
- Press Ctrl+Shift+R and then choose Convert Abstract Class to Interface
- If the abstract class contains non-abstract members, ReSharper shows you a dialog notifying that the bodies and/or accessors of such members will be removed. To avoid this, you need to move the logic of non-abstract members to child classes or elsewhere manually, and then invoke the refactoring again.
- If no conflicts are identified, the abstract class is converted into an interface with the same name, and modifiers of abstract members are changed accordingly. Otherwise, resolve conflicts.
By default, the
naming style for interfaces requires interface names to start
Therefore, if you did not change the settings, the interface name will be highlighted as inconsistently named.
Alt+Enter and use the corresponding
quick fix to
rename the interface.
This feature is supported in the following languages/technologies:
The instructions and examples given here address the use of the feature in C#. For details specific to other languages, see corresponding topics in the ReSharper by Language section.