Object in C#

`System.Object`

The base class for all data types (حرفيا كلها)
This is because C# follows the Object-Oriented Programming (OOP) paradigm, where everything in the language is an object, directly or indirectly deriving from System.Object.
لو عملت function بتاخد object حرفيا تقدر تدخلها أي data type ولو بتـ return object هينفع ترجع أي data type
All data types inherits from this class for 2 reasons:
- Generics was invented in 2005 so from 2002 to 2005 System.Object was used for every thing.
- set of behaviors should be supported in all Data Types:
  - Public Virtual String ToString(); → return object state (values) in string form
  - Public Virtual int GetHashCode(); → return object identity (unique identifier)
  - public virtual bool Equals (Object O2); → to check equality (Equals)
  - public type GetType(); → return data type

Object o1; // zero bytes have been allocated in Heap
 
o1 = new Object();
// new(IL -> newObj)
 
Object o2 = new Object();
o2 = o1;