Deep Copy in C#

Question

MSDN gives this example of a deep copy (http://msdn.microsoft.com/en-us/library/system.object.memberwiseclone.aspx)

public class Person 
{
    public int Age;
           


        

Answer 1

MemberwiseClone does create a new object and copies all non static fields. In case of reference types this means copying the references. So yes, after a member wise clone the fields of the new object point to the same objects as the fields of the original object (for reference types). That is why the example in the MSDN create a new instance of the IdInfo: To create a copy of that object as well.

Your DeepCopy implementation is broken because it does not copy all fields, but if it would then the result would not be different from the MemberwiseClone solution.

This question might also be an interesting read for you: Create a Deep Copy in C#