A Copy Constructor Makes a Copy of an Existing Object

A copy constructor is a constructor that you can define which initializes an instance of a class based on a different instance of the same class.
In the example below, we define a copy constructor for Dog.  The constructor creates a new instance of a Dog based on an existing instance.
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public class Dog
{
    public string Name { get; set; }
    public int Age { get; set; }
 
    // Constructor that takes individual property values
    public Dog(string name, int age)
    {
        Name = name;
        Age = age;
    }
 
    // Copy constructor
    public Dog(Dog otherDog)
    {
        Name = <span class="skimlinks-unlinked">otherDog.Name</span>;
        Age = <span class="skimlinks-unlinked">otherDog.Age</span>;
    }
}
Example of using the copy constructor:
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// Create a dog
Dog myDog = new Dog("Kirby", 15);
 
// Create a copy of Kirby
Dog other = new Dog(myDog);
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