Read Only Fields

When the value of a field is only visible outside the class it is called a read only property.
The value of the field can only be changed inside the class.


public class Animal 
{
   private readonly int _Age;
}

The readonly keyword is used to declare a constant that can be defined in its declaration or at run-time in the constructor.
This value cannot be changed after the class has been created.
The const keyword is used to declare a constant that must be defined in its declaration.


A read only field that contains an object can have its properties modified at run-time


A private set property can be called after the class has been created.



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