How to initialize a list with constructor?

Question

I have a type:

public  class Human
{
    public int Id { get; set; }
    public string Address { get; set; }
    public string Name { get; set; }
    public List         


        

Answer 1

You can initialize it just like any list:

public List ContactNumbers { get; set; }

public Human(int id)
{
    Id = id;
    ContactNumbers = new List();
}

public Human(int id, string address, string name) :this(id)
{
    Address = address;
    Name = name;
    // no need to initialize the list here since you're
    // already calling the single parameter constructor
}       

However, I would even go a step further and make the setter private since you often don't need to set the list, but just access/modify its contents:

public List ContactNumbers { get; private set; }