Read-only member in C#
There are times when we want to create a Person object with firstname and lastname and then ensure that the names are not changeable. Here’s one way of creating read-only member.
// create class members that are read only
private readonly string _firstname;
private readonly string _lastname;
// read only members can only be modified from the constructor
// this helps developers working on the class to avoid changing
// information about the person
public Person(string firstname, string lastname)
_firstname = firstname;
_lastname = lastname;
Read only member are not changeable by class methods. Only the constructor can change it. The member truly becomes read only after the construction finishes.