Classes in C# support abstraction, encapsulation, inheritance, and polymorphism. These are the four basic principles of object-oriented programming. The following code snippet shows the syntax for ...

for example, include behavior from multiple sources in a class. That capability is important in C# because the language doesn’t support multiple inheritance of classes. In addition, you must use ...

In my first example ... a class that inherits from CustomerBase won't be able to access DeleteCustomer. This allows you to create derived classes in the same project as CustomerBase that have ...