A statement that tries to use the new operator to instantiate an abstract class will not compile.

When developing applications that work with an intensive amount of data most developers prefer to use a database management system.

When program code instantiates a derived class object, the base class constructor executes first, followed by the derived class constructor.

You can think of a derived class as an extended version of some base class.

If class B is derived from class A, the methods in class B cannot access fields in class A that are declared protected.

Properties in a base class can be overridden in the same way that methods can be overridden.

Inheritance involves a base class and a relative class.

One common use of the this keyword is to overcome the shadowing of a field name by a parameter name.

If a class’s properties have set accessors, the class is probably immutable.

Assume you have written a ToString method in a class, and created an instance of the class named object1. The following two statements are equivalent:MessageBox.Show(object1);MessageBox.Show(object1.ToString());