However, it should be noted that from C# 7.2, all members in an interface are public by default. Key differences between abstract classes and interfaces in C# While there are certain similarities ...

Abstract classes vs. interfaces in C# 8.0 Are abstract classes and interfaces ... there are subtle differences between the two. You still can’t extend a class from more than one class.

I've been reading through the section "Programming with Components" under "Visual Basic and Visual C#" in the ... that it's a class that implements the IComponent interface. But IComponent ...