Why does copy of the List still change properties in the original List using C#

Question

Lets say I have this class

public class Employee
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public bool isActive {          


        

Answer 1

Why does change in the isActive property of EmployeesCopy also modify the original list?|

Because both the list point to the same instance of the Employee object. You need to deep copy your Employee object as well.