Although interfaces in C# can have only properties, abstract classes in C# may have properties and fields. Typically, we use abstract classes to create an abstract base class that other classes ...

Abstract methods are those that are declared abstract in the base class and cannot have implementations in them, i.e., they cannot have any functionality in them.

Likewise, C# terms like abstract and sealed are raw and technical, evoking the closer relationship that developers of C-like languages have had with the underlying computer science constructs. The ...