Using Object class

Question

It is said that in the book that: Every class you create in C# derives from a single class named System.Object . In other words the object (or Object) class type in the System namespace is the ultimate base class for all other types. My question is when we create a class we can select a class name randomly so that how can it be considered derives from a single class named System.Object.

Sam Hobbs · Answer

Try the following code. Note that their is no base class defined for the Maha class but guess what it says for the base class. class Maha { } class Program { static void Main( string [] args) { Type t = typeof ( Maha ); Console .WriteLine(t.BaseType); } }

Maha · Answer

Thank you for your explanation.

Vulpes · Answer

Inheritance in C# is nothing to do with what the classes are called - a derived class can be given any name you like as long as it's a valid identifier. All that matters is that it's marked as inheriting from whatever you want its parent class to be and the latter is not 'sealed'. So this is fine: class Parent { } class AnythingYouLike : Parent { } This is also fine: class AnythingYouLike2 { } and since no parent class is specified AnythingYouLike2 inherits directly from System.Object as does the Parent class. Because all types inherit from System.Object this means that they inherit methods such as Equals GetHashCode GetType ToString and MemberwiseClone. Some of these are virtual and so can be overridden in the derived class.