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What is a copy constructor in C#?
Copy Constructor creates an object by copying variables from another object.
Let us see an example −
Example
using System; namespace Demo { class Student { private string name; private int rank; public Student(Student s) { name = s.name; rank = s.rank; } public Student(string name, int rank) { this.name = name; this.rank = rank; } public string Display { get { return " Student " + name +" got Rank "+ rank.ToString(); } } } class StudentInfo { static void Main() { Student s1 = new Student("Jack", 2); // copy constructor Student s2 = new Student(s1); // display Console.WriteLine(s2.Display); Console.ReadLine(); } } }
Above we saw, firstly we declared a copy constructor −
public Student(Student s)
Then a new object is created for the Student class −
Student s1 = new Student("Jack", 2);
Now, the s1 object is copied to a new object s2 −
Student s2 = new Student(s1);
This is what we call copy constructor.
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