C# Classes and Objects

ExampleC#

using System;

class Person
{
    public string Name { get; set; }
    public int Age { get; private set; }

    public Person(string name, int age)
    {
        Name = name;
        Age = age;
    }

    public void Birthday()
    {
        Age++;
    }

    public override string ToString()
    {
        return Name + " is " + Age;
    }
}

class Program
{
    static void Main()
    {
        Person p = new Person("Ada", 36);
        p.Birthday();
        Console.WriteLine(p);
        p.Name = "Grace";
        Console.WriteLine(p.Name);
    }
}

Output

Ada is 37
Grace

{ get; set; } declares a property: a field with built-in access. private set means only the class itself can change Age.

Quick check

What does { get; private set; } mean?

Readable by anyone, changeable only inside the classA private fieldA constant

Finish the quick check (and any code exercise) to complete this lesson, or mark it done yourself.

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