将列表放入类 c#

Question

Is it possible to put a list into a class? So for example if I have a class of Person and their properties are Name, Age, Valuables can the Valuables property be a list that holds a Valuable class with properties like ItemName, Cost, Quantity?

Answer 1

Yes, absolutely!

You would just have

public class Person {
     string Name;
     int Age;
     List<Valuable> Valuables = new List<Valuable>();
}

public class Valuable {
    string ItemName;
    double Cost;
    int Quantity;
}

to use the code, you would then

Person bob = new Person { Name = "Bob", Age = 29 };
Valuable bobsCrystalBall = new Valuable { ItemName = "CrystalBall", Cost = 9.99, Quantity = 1}
bob.Valuables.Add(bobsCrystalBall);

@SomeBody should have specified that you can't do Person.Valuables.Add directly, you have to do that on an instance of that class. You create an instance of a class with the keyword new . Similarly with adding an instance of the class Valuable .

Answer 2

public class Person
{
     public string Name {get;set;}
     public int Age {get;set;}
     public List<ValuablesDTO> Valuables {get;set;}

     public  class ValuablesDTO
     {
          public string ItemName {get;set;}
          public decimal Quantity {get;set;}
          public decimal Cost {get;set;}
      }
}